Plants have always been exploited worldwide for food, medicines, shelter, and other purposes because they are readily available, affordable and acceptable to a large populace of the world. The study was conducted to g...Plants have always been exploited worldwide for food, medicines, shelter, and other purposes because they are readily available, affordable and acceptable to a large populace of the world. The study was conducted to gather information on the proximate composition of fresh and dry leaves of Pterocarpus erinaceus. The proximate composition of the leaf samples was determined using the standard methods of analysis of the Association of Official Analytical Chemists (AOAC). Proximate analysis of the fresh leaf samples of the plant shows a higher moisture content compared to the dry leaf samples. The total fat and total ash contents of the fresh leaf samples were however lower compared to values recorded for the dry leaf samples. The dry matter content of fresh leaf samples was also lower compared to that of the dry leaf samples. Fresh leaf samples again recorded the least crude protein content compared to dry leaf samples. Carbohydrates content in fresh leaf samples was higher compared to dry leaf samples. Generally, higher proximate values were recorded for dry leaf samples than for fresh leaves. Dry matter and moisture contents were detected in high quantities in both fresh and dry leaf samples of P. erinaceus. These results could be a justification for the multiple uses of the plant leaves across Sub-Saharan Africa. Further research should be carried out on the mineral, phytochemical and vitamin composition between the fresh and dry leaves of the plant.展开更多
Objective:To investigate the antidiarrheal activity of the methanol leaf extract of Pterocarpus erinaceus in vivo.Methods:The methanol leaf extract of Ptemcarpus erinaceus was evaluated using different doses(100,200 a...Objective:To investigate the antidiarrheal activity of the methanol leaf extract of Pterocarpus erinaceus in vivo.Methods:The methanol leaf extract of Ptemcarpus erinaceus was evaluated using different doses(100,200 and 400 mg/kg body weight) orally for antidiarrheal activity using castor oil-induced diarrhea,charcoal meal transit lime and castor oil-induced enteropooling in different groups of albino Wistar mice.The activity of the extract at different doses were compared to diphenoxylate(3 mg/kg) and atropine sulphate(3 mg/kg) which were used as standard reference drugs and also to the distilled water administered negative control group of mice.Results:The extract at the doses used caused a significant(P【 0.01) reduction in the wet faeces passed by the mice in the castor oil-induced diarrhea,decreased the distance travelled by the charcoal meal by up to 54.8%and also caused a dose dependent and significant(P【 0.001) reduction in the intraluminal fluid accumulation in the castor oil-induced enteropooling. Conclusions:Our results indicate that Pterocarpits erinaceus extract produced significant antidiarrheal activity and the action may attribute to inhibition of gastrointestinal movement and fluid secretion.展开更多
Objective:To investigate the restorative effect of Pterocarpus erinaceus(P.erinaceus) and homopterocarpin.an isoflavonoid isolated from it.on indomethacin-indueed disruption in gastric homeostasis in rats.Methods:Adul...Objective:To investigate the restorative effect of Pterocarpus erinaceus(P.erinaceus) and homopterocarpin.an isoflavonoid isolated from it.on indomethacin-indueed disruption in gastric homeostasis in rats.Methods:Adult rats were dn ided into five groups and lasted for 48 h before treatment.Group I received olive oil(vehicle),group 2 received 25 ing/kg indomethaein while groups 3-5 received cimetidine(100 mg/kg).lioniopterocarpin(25 mg/kg) and P.erinaceus ethanolie stem hark extract(100 mg/kg) respectively.After 1 h.all the groups except group 2 were administered 25 mg/kg of indomethacin.One hour later,the rats were sacrificed and the ulcer index and other gaslroprotective indices were evaluated.Results:Indomethacin caused significant injury to the stomach of the rats as reflected in the ulcer indices(9.0±1.4) as compared with that of control(2.0±0.0).Equally,there were significant increases in gastric acid concentration and malondialdehvde level in the stomachs of the ulcerated animals compared with the control.However mucus content,reduced gluthatione level and gastric pH were significantly reduced in the ulcerated animals compared with the control.Pretreatment with either Pterocarpus bark extract or homopterocarpin reversed the effects of indomethaein on the evaluated parameters.Conclusions:These results indicate that both homopterocarpin and Plerocarpus extract offered gastroprotection against indomethacin-induced ulcer by antioxidative mechanism and the modulation of gastric homeostasis.The results also suggest that homopterocarpin might he responsible for.or contribute to the antiulcerogenic property of P.erinaceus.展开更多
In the introduction and propagation of red sandalwood( Pterocarpus santalinus),a serious leaf disease of its seedlings in winter and spring seasons was found,but the name of the disease and its pathogen species have n...In the introduction and propagation of red sandalwood( Pterocarpus santalinus),a serious leaf disease of its seedlings in winter and spring seasons was found,but the name of the disease and its pathogen species have not been reported. The pathogen isolated from infected leaves of 18-month-old seedlings was identified as Colletotrichum gloeosporioides by morphological characteristics of colony and conidium,and analysis results of rD NA-internal transcribed spacer sequence( ITS) of the strain. Pathogenicity test results further confirmed that C. gloeosporioides was the pathogen responsible for the infected leaves symptoms of red sandalwood. However,the disease belongs to an atypical anthracnose. Control of the leaf diseases of red sandalwood seedlings was discussed.展开更多
[Objectives] This article aimed to study the grafting propagation techniques of red sandalwood ( Pterocarpus santalinus ), so as to provide technical support for the effective propagation of seedlings of this precious...[Objectives] This article aimed to study the grafting propagation techniques of red sandalwood ( Pterocarpus santalinus ), so as to provide technical support for the effective propagation of seedlings of this precious Hongmu species.[Methods] Based on the analysis and comparison of the growth performance of the Hongmu tree species introduced to China, taking 1 to 2-year-old Pterocarpus indicus seedlings as rootstocks and single-bud stems of P. santalinus as scions, grafting was carried out from January to April using three grafting propagation methods, cut grafting propagation, skin grafting propagation and oblique grafting propagation.[Results] The results of several years of experiments show that in early spring, P. santalinus could be propagated well using the grafting propagation methods of skin grafting propagation and oblique grafting propagation, with survival rate over 80%. For rootstocks with young age or thin stems, the joint unions of the oblique grafting propagation healed well, without apparent protrusions, unlike those of skin grafting propagation. The survival rate of oblique grafting propagation that is fast and reliable was higher than that of cut grafting propagation.[Conclusions] It is feasible to use the grafting propagation methods to propagate P. santalinus seedlings. This is a traditional and innovative technology path in the propagation of high-quality seedlings of precious Hongmu trees, and can be promoted and applied in industrial practice.展开更多
Objective:To sereen methanol and dichloromethane extracts of stem bark of Pterocarpus erinaceus for anti-inflammatory,analgesic.in vitro antioxidant activities and phytochemical analysis.Methods:Anti-inflammatory acti...Objective:To sereen methanol and dichloromethane extracts of stem bark of Pterocarpus erinaceus for anti-inflammatory,analgesic.in vitro antioxidant activities and phytochemical analysis.Methods:Anti-inflammatory activity was detcrmined by using carrageenan inducededema of mice paw and croton oil-induced edema of mice ear:analgesic effect was evaluated using acetic acid-induced writhing.Phytochemical screening of extracts was performed by thin layer chromatography.The chromatographic fractionation led to the isolation of main active components as friedelin.lupeol and epicathcchin.The structures were established hy TLC and nuclear magnetic resonance studies.Results:Both methanol and dichloromethane extracts, triedelin.lupeol and epicatechin showed a significant anti—inflammatory effect using croton oil induced—ear edema.Furthermore,the action of dichloroinethane extract was more important. At the doses of 100 and 200 mg/kg.the methanol extract was able to reduce the carrageeuan induced-hind paw edema,while al the doses of 100.200 and 400 mg/kg.it showed an important analgesic effect against writhing induced by acetic acid injection of 38.8%.68.0%and 74.3%, respectively.Antioxidative properties of methanol extract and its dichloromethane and ethyl acetate fractions were assessed by using the 1,1—diphenyl—2—picrylhydrazyl method.The methanol extract showed the stronger radical scavenging activity than dichloromethane and ethyl acetate fractions,with an antiradical power of 5.3.5 and 2 respectively.The main components isolated from these extracts as friedelin,lupeol and epicathechin were responsible of these activities.Conclusions:The results suggest that the stem hark extracts of Pterocarpus erinaceus possessed important anti-inflammatory.analgesie activities and strong antioxidant properties, therefore,they could he used as natural potential ingredients for pharma ceutical industry.展开更多
Seed size and the growth environment are important variables that influence seed germination, growth and biomass of seedlings and future tree harvest and should thus be taken into account in agroforestry and reforesta...Seed size and the growth environment are important variables that influence seed germination, growth and biomass of seedlings and future tree harvest and should thus be taken into account in agroforestry and reforestation programmes for endangered species like Pterocarpus erinaceus. In the present study, to assess seedling germination and vigour in P. erinaceus as a function of seed size in two environments, 1080 seeds and 360 seedlings were evaluated at two separate sites in Côte d'Ivoire. The results show that large seeds had very high germination rates (up to 100%) and produced more vigorous plants better able to adapt to climate change. The maternal environment and seed size had a significant influence on seed germination (P < 0.05) and seedling development (P < 0.05) and biomass (P < 0.05). Seedlings were most successful at the site with a humid tropical climate (Daloa). Seedling leaves had the same resistance regardless of seed size and study site, but leaf moisture content was more stable in seedlings grown from medium and small seeds. These results will help guide conservation strategies for the species and are key factors for rural populations, loggers, and forest management structures for the silviculture of this species.展开更多
The objective of this research was to improve the growth and biomass of Pterocarpus santalinus L.f.(an endangered leguminous tree)using native microbial symbionts such as arbuscular mycorrhizal fungi and Rhizobium ass...The objective of this research was to improve the growth and biomass of Pterocarpus santalinus L.f.(an endangered leguminous tree)using native microbial symbionts such as arbuscular mycorrhizal fungi and Rhizobium associated with native populations of P.santalinus.The native arbuscular mycorrhizal fungi isolated from P.santalinus soils were identifi ed as(1)Glomus fasciculatum;(2)Glomus geosporum;and Glomus aggregatum.A nitrogenfi xing microbial symbiont was isolated from the root nodules of P.santalinus and identifi ed as Rhizobium aegyptiacum by 16s rRNA gene sequencing.These microbial symbionts were inoculated individually and in combination into P.santalinus seedling roots.After 90 days,growth and biomass had improved compared with uninoculated controls.Shoot and root lengths,number of leaves,stem circumference,number of root nodules,biomass,nutrient uptake and seedling quality index were signifi cantly increased by a combined inoculation of arbuscular mycorrhizal fungi+Rhizobium aegyptiacum.It was concluded that native microbial symbionts positively infl uenced P.santalinus seedling growth which will be helpful for successful fi eld establishment.展开更多
[Objectives] This study was conducted to develop a rapid propagation method for red sandalwood ( Pterocarpus santalinus ) by tissue culture.[Methods] The well-grown red sandalwood seed embryos were inoculated into thr...[Objectives] This study was conducted to develop a rapid propagation method for red sandalwood ( Pterocarpus santalinus ) by tissue culture.[Methods] The well-grown red sandalwood seed embryos were inoculated into three kinds of culture media after aseptic treatment,and the aseptic explants were obtained and inoculated into six kinds of media for light culture.[Results] In the best disinfection schemes of red sandalwood,disinfecting with HgCl 2 for 8 min achieved the highest germination and survival rates;when the medium for inducing red sandalwood explants was MS+0.2 mg/L IBA,the induction rate reached a maximum value;and when the culture medium for inducing stem segments of aseptic red sandalwood plantlets was MS+3.0 mg/L 6-BA+0.3 mg/L IBA,the growth of the stem segments achieved the best effect.The optimal medium for inducing red sandalwood explants was MS+IBA 0.2 mg/L,and the optimal medium for inducing stem segments of red sandalwood was MS+3.0 mg/L 6-BA+0.3 mg/L IBA.[Conclusions] The results of this study have a large reproductive coefficient,simple process and low cost,which have outstanding value for promoting the breeding and promotion of red sandalwood seedlings.展开更多
Pterocarpus erinaceus is a high socio-economic tree of African savannahs. It is overexploited due to technological qualities of its wood, forage value and medicinal uses. The main objective of this study is the assess...Pterocarpus erinaceus is a high socio-economic tree of African savannahs. It is overexploited due to technological qualities of its wood, forage value and medicinal uses. The main objective of this study is the assessment of the morphological variability within this species in Cote d’Ivoire, in sight of rational management. Fourteen morphological traits were used to appraise the variability within 144 trees in production from six sites (Yalo, Moyenne Marahoué, Kahanso, Kouassi-Ndawa, Ouarigué and Téguirdouo). The results indicate that the variability reaches 6.60 for the height of the fruit and 45.99 for the weight of the fruit. The results reveal also that there are three morphological groups of P. erinaceus in Cote d’Ivoire. Of the four traits that revealed a distinction among the three morphotypes, only the width of leaves and the number of leaflets enabled their complete distinction. Trees of group 1 have long leaves with a high number of leaflets and large fruits. Trees of group 2 have small leaves with a reduced number of leaflets and large fruits. Then trees of group 3 have intermediate value of width of leaves and number of leaflet and small fruits. The three morphological groups could be useful for varietal selection of P. erinaceus in Cote d’Ivoire.展开更多
The proximate, elemental and phytochemical compositions of the leaves of Pterocarpus soyauxii (Oha) were studied. The results obtained for the proximate composition showed the following: moisture content (17.2%), ash ...The proximate, elemental and phytochemical compositions of the leaves of Pterocarpus soyauxii (Oha) were studied. The results obtained for the proximate composition showed the following: moisture content (17.2%), ash content (5.7%), crude fibre (17.2%), crude protein (29.5%), crude fat (4.15%) and carbohydrates (25.95%). The results of the mineral (elemental) analysis in mg/L showed the following to be present in the leaves: Ca (4.04), Cu (0.20), Zn (1.39), Mg (41.0), K (0.31), Mn (0.17), Na (32.0) and Fe (0.60) with Pb and Cr absent. The leaves also contained vitamin A (0.2044 mg/g) and vitamin C (0.4470 mg/g). The phytochemical analysis of different solvent extracts showed the presence of alkaloids, saponins, glycosides and tannins. Flavonoids, phenols and steroids were absent. These findings showed that the leaves of Pterocarpus soyauxii are good sources of beneficial micronutrients, mineral elements and secondary metabolites which are required for healthy growth, justifying the use of the leaves for the popular “Oha” soup of the Igbos of South East Nigeria.展开更多
In Lower Casamance, <i>Pterocarpus erinaceus</i> occupies a very important place in agroforestry parks. It is often grown in association with the most important cash crop of the area, groundnut <i>(A...In Lower Casamance, <i>Pterocarpus erinaceus</i> occupies a very important place in agroforestry parks. It is often grown in association with the most important cash crop of the area, groundnut <i>(Arachis hypogea L.).</i> Thus, the objective of this study is to contribute to a better understanding of the interactions between trees and groundnut cultivation in agroforestry parks in Lower Casamance. To this end, in each of the two districts (Tenghory and Kataba 1) three <i>Pterocarpus erinaceus</i> trees were selected in three separate communes. For each <i>P. erinaceus</i> tree selected and following each of the four cardinal directions, three situations were defined: at R/2, at 1.5 R and at 2 R from the trunk, with R the radius of the crown. Thus, 12 yield squares were installed around each selected tree, for a total of 72 yield squares installed in the two districts. The parameters measured were the height of the peanut plants, the number of pods produced per plant, and the yield in flakes and pods. The results show that geographical orientation significantly influenced plant height (p = 0.004) but not the number of pods/plant (p = 0.6). As for the distance to the trunk of <i>Pterocarpus erinaceus</i>, it induced a significant variation in the number of pods/plant (p = 0.009) but did not induce a significant effect on the other parameters. Yields varied between 1.56 Tons M S /ha and 2.02 Tons M S /ha for the hay, and between 1.03 Tons M S /ha and 1.45 Tons M S/ha for the pods. The results of this study constitute a useful source of information for a better management of the productivity of the agroforestry parks of the department of Bignona.展开更多
Pterostilbene is a natural compound that can be found in various food plants such as blueberries,grapes,and peanuts.It has also been reported to be extracted from Pterocarpus indicus,a tree species native to India and...Pterostilbene is a natural compound that can be found in various food plants such as blueberries,grapes,and peanuts.It has also been reported to be extracted from Pterocarpus indicus,a tree species native to India and Southeast Asia.Pterostilbene exhibits various pharmacological activities such as antioxidants,anti-proliferation,anti-microbial,and anti-inflammatory activities with favorable pharmacokinetic properties,such as high oral bioavailability and longer half-life.The anti-inflammatory effect of pterostilbene has been reported to contribute to its therapeutic effects in many chronic inflammatory diseases.Besides,pterostilbene has anti-cancer activity on various types of cancers due to its ability to induce cell cycle arrest and apoptosis.Hence,in this review,we discuss the anti-inflammatory and anti-cancer activities of pterostilbene in preclinical studies.展开更多
Background:Tropical dry forests cover less than 13%of the world's tropical forests and their area and biodiversity are declining.In southern Africa,the major threat is increasing population pressure,while drought ...Background:Tropical dry forests cover less than 13%of the world's tropical forests and their area and biodiversity are declining.In southern Africa,the major threat is increasing population pressure,while drought caused by climate change is a potential threat in the drier transition zones to shrub land.Monitoring climate change impacts in these transition zones is difficult as there is inadequate information on forest composition to allow disentanglement from other environmental drivers.Methods:This study combined historical and modern forest inventories covering an area of 21,000 km^2 in a transition zone in Namibia and Angola to distinguish late succession tree communities,to understand their dependence on site factors,and to detect trends in the forest composition over the last 40 years.Results:The woodlands were dominated by six tree species that represented 84%of the total basal area and can be referred to as Baikiaea-Pterocarpus woodlands.A boosted regression tree analysis revealed that late succession tree communities are primarily determined by climate and topography.The Schinziophyton rautanenii and Baikiaea plurijuga communities are common on slightly inclined dune or valley slopes and had the highest basal area(5.5-6.2 m^2 ha^(-1)).The Burkea africana-Guibourtia coleosperma and Pterocarpus angolensis-Dialium englerianum communities are typical for the sandy plateaux and have a higher proportion of smaller stems caused by a higher fire frequency.A decrease in overall basal area or a trend of increasing domination by the more drought and cold resilient B.africana community was not confirmed by the historical data,but there were significant decreases in basal area for Ochna pulchra and the valuable fruit tree D.englerianum.Conclusions:The slope communities are more sheltered from fire,frost and drought but are more susceptible to human expansion.The community with the important timber tree P.angolensis can best withstand high fire frequency but shows signs of a higher vulnerability to climate change.Conservation and climate adaptation strategies should include protection of the slope communities through refuges.Follow-up studies are needed on short term dynamics,especially near the edges of the transition zone towards shrub land.展开更多
文摘Plants have always been exploited worldwide for food, medicines, shelter, and other purposes because they are readily available, affordable and acceptable to a large populace of the world. The study was conducted to gather information on the proximate composition of fresh and dry leaves of Pterocarpus erinaceus. The proximate composition of the leaf samples was determined using the standard methods of analysis of the Association of Official Analytical Chemists (AOAC). Proximate analysis of the fresh leaf samples of the plant shows a higher moisture content compared to the dry leaf samples. The total fat and total ash contents of the fresh leaf samples were however lower compared to values recorded for the dry leaf samples. The dry matter content of fresh leaf samples was also lower compared to that of the dry leaf samples. Fresh leaf samples again recorded the least crude protein content compared to dry leaf samples. Carbohydrates content in fresh leaf samples was higher compared to dry leaf samples. Generally, higher proximate values were recorded for dry leaf samples than for fresh leaves. Dry matter and moisture contents were detected in high quantities in both fresh and dry leaf samples of P. erinaceus. These results could be a justification for the multiple uses of the plant leaves across Sub-Saharan Africa. Further research should be carried out on the mineral, phytochemical and vitamin composition between the fresh and dry leaves of the plant.
文摘Objective:To investigate the antidiarrheal activity of the methanol leaf extract of Pterocarpus erinaceus in vivo.Methods:The methanol leaf extract of Ptemcarpus erinaceus was evaluated using different doses(100,200 and 400 mg/kg body weight) orally for antidiarrheal activity using castor oil-induced diarrhea,charcoal meal transit lime and castor oil-induced enteropooling in different groups of albino Wistar mice.The activity of the extract at different doses were compared to diphenoxylate(3 mg/kg) and atropine sulphate(3 mg/kg) which were used as standard reference drugs and also to the distilled water administered negative control group of mice.Results:The extract at the doses used caused a significant(P【 0.01) reduction in the wet faeces passed by the mice in the castor oil-induced diarrhea,decreased the distance travelled by the charcoal meal by up to 54.8%and also caused a dose dependent and significant(P【 0.001) reduction in the intraluminal fluid accumulation in the castor oil-induced enteropooling. Conclusions:Our results indicate that Pterocarpits erinaceus extract produced significant antidiarrheal activity and the action may attribute to inhibition of gastrointestinal movement and fluid secretion.
文摘Objective:To investigate the restorative effect of Pterocarpus erinaceus(P.erinaceus) and homopterocarpin.an isoflavonoid isolated from it.on indomethacin-indueed disruption in gastric homeostasis in rats.Methods:Adult rats were dn ided into five groups and lasted for 48 h before treatment.Group I received olive oil(vehicle),group 2 received 25 ing/kg indomethaein while groups 3-5 received cimetidine(100 mg/kg).lioniopterocarpin(25 mg/kg) and P.erinaceus ethanolie stem hark extract(100 mg/kg) respectively.After 1 h.all the groups except group 2 were administered 25 mg/kg of indomethacin.One hour later,the rats were sacrificed and the ulcer index and other gaslroprotective indices were evaluated.Results:Indomethacin caused significant injury to the stomach of the rats as reflected in the ulcer indices(9.0±1.4) as compared with that of control(2.0±0.0).Equally,there were significant increases in gastric acid concentration and malondialdehvde level in the stomachs of the ulcerated animals compared with the control.However mucus content,reduced gluthatione level and gastric pH were significantly reduced in the ulcerated animals compared with the control.Pretreatment with either Pterocarpus bark extract or homopterocarpin reversed the effects of indomethaein on the evaluated parameters.Conclusions:These results indicate that both homopterocarpin and Plerocarpus extract offered gastroprotection against indomethacin-induced ulcer by antioxidative mechanism and the modulation of gastric homeostasis.The results also suggest that homopterocarpin might he responsible for.or contribute to the antiulcerogenic property of P.erinaceus.
基金Supported by Natural Science Foundation of China(31270674)Innovative High School Key Research Platform of Zhaoqing University(CQ201607)
文摘In the introduction and propagation of red sandalwood( Pterocarpus santalinus),a serious leaf disease of its seedlings in winter and spring seasons was found,but the name of the disease and its pathogen species have not been reported. The pathogen isolated from infected leaves of 18-month-old seedlings was identified as Colletotrichum gloeosporioides by morphological characteristics of colony and conidium,and analysis results of rD NA-internal transcribed spacer sequence( ITS) of the strain. Pathogenicity test results further confirmed that C. gloeosporioides was the pathogen responsible for the infected leaves symptoms of red sandalwood. However,the disease belongs to an atypical anthracnose. Control of the leaf diseases of red sandalwood seedlings was discussed.
基金Supported by College Students’Science and Technology Innovation Cultivation Special Funds(Climbing Plan)(pdjhb0541)National Natural Science Foundation of China(31270674)
文摘[Objectives] This article aimed to study the grafting propagation techniques of red sandalwood ( Pterocarpus santalinus ), so as to provide technical support for the effective propagation of seedlings of this precious Hongmu species.[Methods] Based on the analysis and comparison of the growth performance of the Hongmu tree species introduced to China, taking 1 to 2-year-old Pterocarpus indicus seedlings as rootstocks and single-bud stems of P. santalinus as scions, grafting was carried out from January to April using three grafting propagation methods, cut grafting propagation, skin grafting propagation and oblique grafting propagation.[Results] The results of several years of experiments show that in early spring, P. santalinus could be propagated well using the grafting propagation methods of skin grafting propagation and oblique grafting propagation, with survival rate over 80%. For rootstocks with young age or thin stems, the joint unions of the oblique grafting propagation healed well, without apparent protrusions, unlike those of skin grafting propagation. The survival rate of oblique grafting propagation that is fast and reliable was higher than that of cut grafting propagation.[Conclusions] It is feasible to use the grafting propagation methods to propagate P. santalinus seedlings. This is a traditional and innovative technology path in the propagation of high-quality seedlings of precious Hongmu trees, and can be promoted and applied in industrial practice.
文摘Objective:To sereen methanol and dichloromethane extracts of stem bark of Pterocarpus erinaceus for anti-inflammatory,analgesic.in vitro antioxidant activities and phytochemical analysis.Methods:Anti-inflammatory activity was detcrmined by using carrageenan inducededema of mice paw and croton oil-induced edema of mice ear:analgesic effect was evaluated using acetic acid-induced writhing.Phytochemical screening of extracts was performed by thin layer chromatography.The chromatographic fractionation led to the isolation of main active components as friedelin.lupeol and epicathcchin.The structures were established hy TLC and nuclear magnetic resonance studies.Results:Both methanol and dichloromethane extracts, triedelin.lupeol and epicatechin showed a significant anti—inflammatory effect using croton oil induced—ear edema.Furthermore,the action of dichloroinethane extract was more important. At the doses of 100 and 200 mg/kg.the methanol extract was able to reduce the carrageeuan induced-hind paw edema,while al the doses of 100.200 and 400 mg/kg.it showed an important analgesic effect against writhing induced by acetic acid injection of 38.8%.68.0%and 74.3%, respectively.Antioxidative properties of methanol extract and its dichloromethane and ethyl acetate fractions were assessed by using the 1,1—diphenyl—2—picrylhydrazyl method.The methanol extract showed the stronger radical scavenging activity than dichloromethane and ethyl acetate fractions,with an antiradical power of 5.3.5 and 2 respectively.The main components isolated from these extracts as friedelin,lupeol and epicathechin were responsible of these activities.Conclusions:The results suggest that the stem hark extracts of Pterocarpus erinaceus possessed important anti-inflammatory.analgesie activities and strong antioxidant properties, therefore,they could he used as natural potential ingredients for pharma ceutical industry.
基金financed by the Ministry of Higher Education and Scientific Research of Côte d’Ivoirethe French Development Agency and IRD (Institut de Recherche pour le Developpement) in the framework of PRESeD-CI 2 (Renewed Partnership for Research for Development in Côte d’Ivoire)C2D (Debt Reduction Contract) of the AMRUGECI project (Support for the Modernization and Reform of Universities and Grandes Ecoles of Côte d’Ivoire)
文摘Seed size and the growth environment are important variables that influence seed germination, growth and biomass of seedlings and future tree harvest and should thus be taken into account in agroforestry and reforestation programmes for endangered species like Pterocarpus erinaceus. In the present study, to assess seedling germination and vigour in P. erinaceus as a function of seed size in two environments, 1080 seeds and 360 seedlings were evaluated at two separate sites in Côte d'Ivoire. The results show that large seeds had very high germination rates (up to 100%) and produced more vigorous plants better able to adapt to climate change. The maternal environment and seed size had a significant influence on seed germination (P < 0.05) and seedling development (P < 0.05) and biomass (P < 0.05). Seedlings were most successful at the site with a humid tropical climate (Daloa). Seedling leaves had the same resistance regardless of seed size and study site, but leaf moisture content was more stable in seedlings grown from medium and small seeds. These results will help guide conservation strategies for the species and are key factors for rural populations, loggers, and forest management structures for the silviculture of this species.
基金a research project(No.IFGTB/NFRP 168)of the Indian Council of Forestry Research and Education,Dehra Dun.
文摘The objective of this research was to improve the growth and biomass of Pterocarpus santalinus L.f.(an endangered leguminous tree)using native microbial symbionts such as arbuscular mycorrhizal fungi and Rhizobium associated with native populations of P.santalinus.The native arbuscular mycorrhizal fungi isolated from P.santalinus soils were identifi ed as(1)Glomus fasciculatum;(2)Glomus geosporum;and Glomus aggregatum.A nitrogenfi xing microbial symbiont was isolated from the root nodules of P.santalinus and identifi ed as Rhizobium aegyptiacum by 16s rRNA gene sequencing.These microbial symbionts were inoculated individually and in combination into P.santalinus seedling roots.After 90 days,growth and biomass had improved compared with uninoculated controls.Shoot and root lengths,number of leaves,stem circumference,number of root nodules,biomass,nutrient uptake and seedling quality index were signifi cantly increased by a combined inoculation of arbuscular mycorrhizal fungi+Rhizobium aegyptiacum.It was concluded that native microbial symbionts positively infl uenced P.santalinus seedling growth which will be helpful for successful fi eld establishment.
基金Supported by National Natural Science Foundation of China(31270674)Guangdong College Students’Science and Technology Innovation and Cultivation Project(pdjhb0541)
文摘[Objectives] This study was conducted to develop a rapid propagation method for red sandalwood ( Pterocarpus santalinus ) by tissue culture.[Methods] The well-grown red sandalwood seed embryos were inoculated into three kinds of culture media after aseptic treatment,and the aseptic explants were obtained and inoculated into six kinds of media for light culture.[Results] In the best disinfection schemes of red sandalwood,disinfecting with HgCl 2 for 8 min achieved the highest germination and survival rates;when the medium for inducing red sandalwood explants was MS+0.2 mg/L IBA,the induction rate reached a maximum value;and when the culture medium for inducing stem segments of aseptic red sandalwood plantlets was MS+3.0 mg/L 6-BA+0.3 mg/L IBA,the growth of the stem segments achieved the best effect.The optimal medium for inducing red sandalwood explants was MS+IBA 0.2 mg/L,and the optimal medium for inducing stem segments of red sandalwood was MS+3.0 mg/L 6-BA+0.3 mg/L IBA.[Conclusions] The results of this study have a large reproductive coefficient,simple process and low cost,which have outstanding value for promoting the breeding and promotion of red sandalwood seedlings.
文摘Pterocarpus erinaceus is a high socio-economic tree of African savannahs. It is overexploited due to technological qualities of its wood, forage value and medicinal uses. The main objective of this study is the assessment of the morphological variability within this species in Cote d’Ivoire, in sight of rational management. Fourteen morphological traits were used to appraise the variability within 144 trees in production from six sites (Yalo, Moyenne Marahoué, Kahanso, Kouassi-Ndawa, Ouarigué and Téguirdouo). The results indicate that the variability reaches 6.60 for the height of the fruit and 45.99 for the weight of the fruit. The results reveal also that there are three morphological groups of P. erinaceus in Cote d’Ivoire. Of the four traits that revealed a distinction among the three morphotypes, only the width of leaves and the number of leaflets enabled their complete distinction. Trees of group 1 have long leaves with a high number of leaflets and large fruits. Trees of group 2 have small leaves with a reduced number of leaflets and large fruits. Then trees of group 3 have intermediate value of width of leaves and number of leaflet and small fruits. The three morphological groups could be useful for varietal selection of P. erinaceus in Cote d’Ivoire.
文摘The proximate, elemental and phytochemical compositions of the leaves of Pterocarpus soyauxii (Oha) were studied. The results obtained for the proximate composition showed the following: moisture content (17.2%), ash content (5.7%), crude fibre (17.2%), crude protein (29.5%), crude fat (4.15%) and carbohydrates (25.95%). The results of the mineral (elemental) analysis in mg/L showed the following to be present in the leaves: Ca (4.04), Cu (0.20), Zn (1.39), Mg (41.0), K (0.31), Mn (0.17), Na (32.0) and Fe (0.60) with Pb and Cr absent. The leaves also contained vitamin A (0.2044 mg/g) and vitamin C (0.4470 mg/g). The phytochemical analysis of different solvent extracts showed the presence of alkaloids, saponins, glycosides and tannins. Flavonoids, phenols and steroids were absent. These findings showed that the leaves of Pterocarpus soyauxii are good sources of beneficial micronutrients, mineral elements and secondary metabolites which are required for healthy growth, justifying the use of the leaves for the popular “Oha” soup of the Igbos of South East Nigeria.
文摘In Lower Casamance, <i>Pterocarpus erinaceus</i> occupies a very important place in agroforestry parks. It is often grown in association with the most important cash crop of the area, groundnut <i>(Arachis hypogea L.).</i> Thus, the objective of this study is to contribute to a better understanding of the interactions between trees and groundnut cultivation in agroforestry parks in Lower Casamance. To this end, in each of the two districts (Tenghory and Kataba 1) three <i>Pterocarpus erinaceus</i> trees were selected in three separate communes. For each <i>P. erinaceus</i> tree selected and following each of the four cardinal directions, three situations were defined: at R/2, at 1.5 R and at 2 R from the trunk, with R the radius of the crown. Thus, 12 yield squares were installed around each selected tree, for a total of 72 yield squares installed in the two districts. The parameters measured were the height of the peanut plants, the number of pods produced per plant, and the yield in flakes and pods. The results show that geographical orientation significantly influenced plant height (p = 0.004) but not the number of pods/plant (p = 0.6). As for the distance to the trunk of <i>Pterocarpus erinaceus</i>, it induced a significant variation in the number of pods/plant (p = 0.009) but did not induce a significant effect on the other parameters. Yields varied between 1.56 Tons M S /ha and 2.02 Tons M S /ha for the hay, and between 1.03 Tons M S /ha and 1.45 Tons M S/ha for the pods. The results of this study constitute a useful source of information for a better management of the productivity of the agroforestry parks of the department of Bignona.
基金the Ministry of Higher Education(MOHE)Malaysia through the Fundamental Research Grant Scheme(FRGS)with grant number:FRGS/1/2019/SKK10/UKM/01/1.
文摘Pterostilbene is a natural compound that can be found in various food plants such as blueberries,grapes,and peanuts.It has also been reported to be extracted from Pterocarpus indicus,a tree species native to India and Southeast Asia.Pterostilbene exhibits various pharmacological activities such as antioxidants,anti-proliferation,anti-microbial,and anti-inflammatory activities with favorable pharmacokinetic properties,such as high oral bioavailability and longer half-life.The anti-inflammatory effect of pterostilbene has been reported to contribute to its therapeutic effects in many chronic inflammatory diseases.Besides,pterostilbene has anti-cancer activity on various types of cancers due to its ability to induce cell cycle arrest and apoptosis.Hence,in this review,we discuss the anti-inflammatory and anti-cancer activities of pterostilbene in preclinical studies.
基金support of The Future Okavango(TFO)and the SASSCAL projects which were funded by the German Federal Ministry of Education and Research under promotion numbers 01 LL 0912 A and 01 LG1201 M respectivelysupport by the KLIMOS ACROPOLIS research platform(Belgian Development Aid through VLIR/ARES)
文摘Background:Tropical dry forests cover less than 13%of the world's tropical forests and their area and biodiversity are declining.In southern Africa,the major threat is increasing population pressure,while drought caused by climate change is a potential threat in the drier transition zones to shrub land.Monitoring climate change impacts in these transition zones is difficult as there is inadequate information on forest composition to allow disentanglement from other environmental drivers.Methods:This study combined historical and modern forest inventories covering an area of 21,000 km^2 in a transition zone in Namibia and Angola to distinguish late succession tree communities,to understand their dependence on site factors,and to detect trends in the forest composition over the last 40 years.Results:The woodlands were dominated by six tree species that represented 84%of the total basal area and can be referred to as Baikiaea-Pterocarpus woodlands.A boosted regression tree analysis revealed that late succession tree communities are primarily determined by climate and topography.The Schinziophyton rautanenii and Baikiaea plurijuga communities are common on slightly inclined dune or valley slopes and had the highest basal area(5.5-6.2 m^2 ha^(-1)).The Burkea africana-Guibourtia coleosperma and Pterocarpus angolensis-Dialium englerianum communities are typical for the sandy plateaux and have a higher proportion of smaller stems caused by a higher fire frequency.A decrease in overall basal area or a trend of increasing domination by the more drought and cold resilient B.africana community was not confirmed by the historical data,but there were significant decreases in basal area for Ochna pulchra and the valuable fruit tree D.englerianum.Conclusions:The slope communities are more sheltered from fire,frost and drought but are more susceptible to human expansion.The community with the important timber tree P.angolensis can best withstand high fire frequency but shows signs of a higher vulnerability to climate change.Conservation and climate adaptation strategies should include protection of the slope communities through refuges.Follow-up studies are needed on short term dynamics,especially near the edges of the transition zone towards shrub land.
