Dunaliella salina is known as one of the most salt-tolerant eukaryotic or- ganisms, and the most ideal model organism for studying plant adaption to high salinity. In recent years, the study on molecular mechanism of ...Dunaliella salina is known as one of the most salt-tolerant eukaryotic or- ganisms, and the most ideal model organism for studying plant adaption to high salinity. In recent years, the study on molecular mechanism of salt tolerance in Dunaliella salina has become the focus of scholars at home and abroad with the development of molecular biological techniques. This study reviewed studies on adaption of Dunaliella salina to high salinity in aspects of osmotic adjustment, salt tolerance-related genes and proteins of Dunaliella salina and signal transduction pathway of salt stress.展开更多
The essay studies the influence of the different intensities of fishing stress on body weight （7.30 ± 1.48） g of red crucian carp juvenile body length, weight, fatness, feeding rate, specific growth rate, food ...The essay studies the influence of the different intensities of fishing stress on body weight （7.30 ± 1.48） g of red crucian carp juvenile body length, weight, fatness, feeding rate, specific growth rate, food conversion rate, intestinal protease, amylase and immunoglobulin. The result showed that body length, weight, fatness, feeding rate, specific growth rate of red crucian carp juvenile were significantly inhibited from fishing stress compared with the control group, and the magnitude of the inhibitory effect increased with the time going and increased. Fishing stress could increase the food conversion rate of red crucian carp juvenile, and the different intensity stress had no significant different influence. The intestinal protease activity decreased in the beginning, then increased, and was consistent with the level of the control group ultimately. High-stress group accelerated the decline of intestinal amylase activity of the juvenile. The stress increased the number of immunoglobulin of juvenile red crucian carp significantly, but the increase disappeard with the stress time extended.展开更多
To compare the effects of CO2-induced seawater acidification and HCI-induced seawater acidification on benthic echinoderms, Hemicentrotus pulcherrimus inhibiting intertidal coastal zone in northern China was utilized ...To compare the effects of CO2-induced seawater acidification and HCI-induced seawater acidification on benthic echinoderms, Hemicentrotus pulcherrimus inhibiting intertidal coastal zone in northern China was utilized in the current study. Under two seawater acidification scenario conditions, embryogenesis and larval spicule development were investigated and compared, respectively. Based on the projection of IPCC, present natural seawater condition （pH=8.06 ± 0.01） and six laboratory-controlled acidified conditions （three CO2-treated groups and three HCI-treated groups, respectively） were set up. Results showed that： （a） early embryonic cleavage tended to be delayed as pH declined in all acidified seawater groups, embryonic cleavage delay of CO2-treated groups tended to be more severe as compared to that of HCI-treated groups; （b） impaired larval symmetry were observed both in CO2-treated groups and HCI-treated groups, there was no significant difference between the two; （c） alteration in skeletal elements was observed in all acidified groups as compared to control, and elongated spicules were observed in CO2-treated groups and shorten spicules were found in HCI-treated groups. Also, when A pH=-0.5, spicule corrosion in CQ-treated group was worse than that in HCI-treated group. All data observed in this study suggest that different seawater acidification scenarios had different effects on sea urchins. Compared to HCI-induced seawater acidification, the effects of CO2-induced seawater acidification on sea urchins were more profound.展开更多
Seaweeds are marine biological resources rich in a variety of bioactive substances with a wide range of biological functions.In this research,lectins were extracted from C.ocellatus Holmes,Rhodomela C.Ag,Laminaria jap...Seaweeds are marine biological resources rich in a variety of bioactive substances with a wide range of biological functions.In this research,lectins were extracted from C.ocellatus Holmes,Rhodomela C.Ag,Laminaria japonica Aresch,Undaria pinnati fida,Porphyra yezoensis Ueda and Alga Scytosiphonis Lomentarii.The activities of the lectins were measured and analyzed respectively.The results showed that the effect of extracting the lectin with normal saline was better,and the activity in kelp crude extract was better.It can provide a reference for further development and utilization of economic seaweed.展开更多
基金Supported by National Natural Science Foundation of China(3147226030972240)~~
文摘Dunaliella salina is known as one of the most salt-tolerant eukaryotic or- ganisms, and the most ideal model organism for studying plant adaption to high salinity. In recent years, the study on molecular mechanism of salt tolerance in Dunaliella salina has become the focus of scholars at home and abroad with the development of molecular biological techniques. This study reviewed studies on adaption of Dunaliella salina to high salinity in aspects of osmotic adjustment, salt tolerance-related genes and proteins of Dunaliella salina and signal transduction pathway of salt stress.
文摘The essay studies the influence of the different intensities of fishing stress on body weight （7.30 ± 1.48） g of red crucian carp juvenile body length, weight, fatness, feeding rate, specific growth rate, food conversion rate, intestinal protease, amylase and immunoglobulin. The result showed that body length, weight, fatness, feeding rate, specific growth rate of red crucian carp juvenile were significantly inhibited from fishing stress compared with the control group, and the magnitude of the inhibitory effect increased with the time going and increased. Fishing stress could increase the food conversion rate of red crucian carp juvenile, and the different intensity stress had no significant different influence. The intestinal protease activity decreased in the beginning, then increased, and was consistent with the level of the control group ultimately. High-stress group accelerated the decline of intestinal amylase activity of the juvenile. The stress increased the number of immunoglobulin of juvenile red crucian carp significantly, but the increase disappeard with the stress time extended.
基金supported by the Liaoning Natural Science Foundation of China(No.20170540104)Open Project of Key Laboratory of Mariculture&Stock Enhancement in North China’s Sea(No.2015-MSENC-KF-01)National Natural Science Foundation of China(NSFC No.41206128)
文摘To compare the effects of CO2-induced seawater acidification and HCI-induced seawater acidification on benthic echinoderms, Hemicentrotus pulcherrimus inhibiting intertidal coastal zone in northern China was utilized in the current study. Under two seawater acidification scenario conditions, embryogenesis and larval spicule development were investigated and compared, respectively. Based on the projection of IPCC, present natural seawater condition （pH=8.06 ± 0.01） and six laboratory-controlled acidified conditions （three CO2-treated groups and three HCI-treated groups, respectively） were set up. Results showed that： （a） early embryonic cleavage tended to be delayed as pH declined in all acidified seawater groups, embryonic cleavage delay of CO2-treated groups tended to be more severe as compared to that of HCI-treated groups; （b） impaired larval symmetry were observed both in CO2-treated groups and HCI-treated groups, there was no significant difference between the two; （c） alteration in skeletal elements was observed in all acidified groups as compared to control, and elongated spicules were observed in CO2-treated groups and shorten spicules were found in HCI-treated groups. Also, when A pH=-0.5, spicule corrosion in CQ-treated group was worse than that in HCI-treated group. All data observed in this study suggest that different seawater acidification scenarios had different effects on sea urchins. Compared to HCI-induced seawater acidification, the effects of CO2-induced seawater acidification on sea urchins were more profound.
基金Supported by Research Project on Undergraduate Teaching Reform of General Higher Education in Liaoning(UPRP20160329)~~
文摘Seaweeds are marine biological resources rich in a variety of bioactive substances with a wide range of biological functions.In this research,lectins were extracted from C.ocellatus Holmes,Rhodomela C.Ag,Laminaria japonica Aresch,Undaria pinnati fida,Porphyra yezoensis Ueda and Alga Scytosiphonis Lomentarii.The activities of the lectins were measured and analyzed respectively.The results showed that the effect of extracting the lectin with normal saline was better,and the activity in kelp crude extract was better.It can provide a reference for further development and utilization of economic seaweed.
