Studies were initiated to explore the role of nucellus tissues and growth regulators in plantlets regeneration via somatic embryogenesis of Kinnow mandarin [Citrus reticulata L. (Blanco)]. Nucellus tissues were cultur...Studies were initiated to explore the role of nucellus tissues and growth regulators in plantlets regeneration via somatic embryogenesis of Kinnow mandarin [Citrus reticulata L. (Blanco)]. Nucellus tissues were cultured on MS medium supplemented with different concentrations and combinations of auxins, cytokinins and malt extract for primary callus induction. The best response for primary callus induction (90%) was obtained when MS medium was supplemented with 5 mg/l 2,4-D and 500 mg/l malt extract. Best results for embryogenic callus induction (80%) were obtained in C<sub>8</sub> medium. The induction of somatic embryos was highest when MS medium was supplemented with 1 mg/l BAP and maturation of somatic embryos occurred when MS medium was supplemented with 5 mg/l 2,4-D and 1 mg/l BAP. Maximum plantlets were regenerated (92%) from the somatic embryos on half strength MS medium with no hormones. The plantlets were successfully acclimatized in different potting mixtures and highest survival rate (100%) was achieved in potting mixture containing sand and peat moss (2:1).展开更多
Polygonatum verticillatum(Linn.)All.syn.Convallaria verticillata Linn.is a valuable medicinal plant,distributed in the temperate Himalaya at the elevations 2400 to 2800 m.It is a perennial rhizomatous herb and contain...Polygonatum verticillatum(Linn.)All.syn.Convallaria verticillata Linn.is a valuable medicinal plant,distributed in the temperate Himalaya at the elevations 2400 to 2800 m.It is a perennial rhizomatous herb and contains various pharmacologically important secondary metabolites among which the most important areα-bulnesene,linalyl acetate,eicosadienoic,pentacosane,piperitone,docasane,diosgenin,santonin and calarene.It also possesses antimalarial,antipyretic,anti-inflammatory,anticonvulsant,lipoxygenase,urease inhibition,diuretic,tracheorelaxant,antidiarrheal,antispasmodic,antinociceptive,antifungal,antibacterial and bronchodilator activities.The plant also got importance in traditional systems of medicine due to its broad therapeutic potential especially of its rhizome.But in the past few years,over exploitation of plant parts caused the decline in the frequency of this species due to which it became threatened,endangered and vulnerable in different parts of the world.So efforts are being made in certain regions of the world for both ex-situ and in-situ conservation.This paper briefly reviewed the botanical,traditional,phytochemical,pharmacological and conservation related aspects of this plant.展开更多
Aconitum heterophyllum is a plant that has very important medicinal value.Lots of phytochemical constituents(metabolites)are extracted from this plant,especially diterpene alkaloids which are the main compounds having...Aconitum heterophyllum is a plant that has very important medicinal value.Lots of phytochemical constituents(metabolites)are extracted from this plant,especially diterpene alkaloids which are the main compounds having pharmacological activities such as analgesic and anti-inflammatory.Study of the structures of these compounds was done by the technique of nuclear magnetic resonance.展开更多
Fermentation based vaccine production system is replaced by edible vaccine technology. Plant derived vaccines are produced by using transgenic plants which have immunogenic properties. For combating infectious disease...Fermentation based vaccine production system is replaced by edible vaccine technology. Plant derived vaccines are produced by using transgenic plants which have immunogenic properties. For combating infectious diseases especially in developing countries there is a practical need of new technology to produce and deliver inexpensive vaccines. We have best option of plant derived edible vaccines. There are many benefits of plant derived vaccinesi.e. they are cheaper, simple and easy to administer, more stable, extra versatile, with more acceptance power and highly efficient. Some plant derived vaccines are under clinical trials to use commercially and many are under research. This paper reviews the current status and future of this technology.展开更多
Viola canescens Wall.ex Roxb.is a perennial herb belonging to family Violaceae,and it is almost cosmopolitan in distribution.This plant is widely used in Ayurveda and Unani medicinal systems for curing various ailment...Viola canescens Wall.ex Roxb.is a perennial herb belonging to family Violaceae,and it is almost cosmopolitan in distribution.This plant is widely used in Ayurveda and Unani medicinal systems for curing various ailments,most commonly for cough and cold.Phytochemical studies releaved that this plant is rich in secondary metabolites.This plant revealed significant antimicrobial,anti-inflamatory,antioxidant,hepatoprotective,laxative,analgesic as well as antitumor activities.Due to all these important pharmacological activities,market demand of Viola canescens is increasing day by day and this plant is facing tremendous over exploitation and becomes a threatened plant according to International Union for Conservation of Nature and Natural Resources.The present review compiles that the ethnobotanical,phytochemical and pharmacological aspects of the plant need to be conserved.展开更多
文摘Studies were initiated to explore the role of nucellus tissues and growth regulators in plantlets regeneration via somatic embryogenesis of Kinnow mandarin [Citrus reticulata L. (Blanco)]. Nucellus tissues were cultured on MS medium supplemented with different concentrations and combinations of auxins, cytokinins and malt extract for primary callus induction. The best response for primary callus induction (90%) was obtained when MS medium was supplemented with 5 mg/l 2,4-D and 500 mg/l malt extract. Best results for embryogenic callus induction (80%) were obtained in C<sub>8</sub> medium. The induction of somatic embryos was highest when MS medium was supplemented with 1 mg/l BAP and maturation of somatic embryos occurred when MS medium was supplemented with 5 mg/l 2,4-D and 1 mg/l BAP. Maximum plantlets were regenerated (92%) from the somatic embryos on half strength MS medium with no hormones. The plantlets were successfully acclimatized in different potting mixtures and highest survival rate (100%) was achieved in potting mixture containing sand and peat moss (2:1).
文摘Polygonatum verticillatum(Linn.)All.syn.Convallaria verticillata Linn.is a valuable medicinal plant,distributed in the temperate Himalaya at the elevations 2400 to 2800 m.It is a perennial rhizomatous herb and contains various pharmacologically important secondary metabolites among which the most important areα-bulnesene,linalyl acetate,eicosadienoic,pentacosane,piperitone,docasane,diosgenin,santonin and calarene.It also possesses antimalarial,antipyretic,anti-inflammatory,anticonvulsant,lipoxygenase,urease inhibition,diuretic,tracheorelaxant,antidiarrheal,antispasmodic,antinociceptive,antifungal,antibacterial and bronchodilator activities.The plant also got importance in traditional systems of medicine due to its broad therapeutic potential especially of its rhizome.But in the past few years,over exploitation of plant parts caused the decline in the frequency of this species due to which it became threatened,endangered and vulnerable in different parts of the world.So efforts are being made in certain regions of the world for both ex-situ and in-situ conservation.This paper briefly reviewed the botanical,traditional,phytochemical,pharmacological and conservation related aspects of this plant.
文摘Aconitum heterophyllum is a plant that has very important medicinal value.Lots of phytochemical constituents(metabolites)are extracted from this plant,especially diterpene alkaloids which are the main compounds having pharmacological activities such as analgesic and anti-inflammatory.Study of the structures of these compounds was done by the technique of nuclear magnetic resonance.
文摘Fermentation based vaccine production system is replaced by edible vaccine technology. Plant derived vaccines are produced by using transgenic plants which have immunogenic properties. For combating infectious diseases especially in developing countries there is a practical need of new technology to produce and deliver inexpensive vaccines. We have best option of plant derived edible vaccines. There are many benefits of plant derived vaccinesi.e. they are cheaper, simple and easy to administer, more stable, extra versatile, with more acceptance power and highly efficient. Some plant derived vaccines are under clinical trials to use commercially and many are under research. This paper reviews the current status and future of this technology.
文摘Viola canescens Wall.ex Roxb.is a perennial herb belonging to family Violaceae,and it is almost cosmopolitan in distribution.This plant is widely used in Ayurveda and Unani medicinal systems for curing various ailments,most commonly for cough and cold.Phytochemical studies releaved that this plant is rich in secondary metabolites.This plant revealed significant antimicrobial,anti-inflamatory,antioxidant,hepatoprotective,laxative,analgesic as well as antitumor activities.Due to all these important pharmacological activities,market demand of Viola canescens is increasing day by day and this plant is facing tremendous over exploitation and becomes a threatened plant according to International Union for Conservation of Nature and Natural Resources.The present review compiles that the ethnobotanical,phytochemical and pharmacological aspects of the plant need to be conserved.
