【目的】获得雨生红球藻中紫外抗性蛋白(Uvresistance locus 8,UVR8)的cDNA序列全长,并进行生物信息分析。【方法】以雨生红球藻为研究对象,通过同源克隆方法获得紫外抗性蛋白UVR8的cDNA序列全长,并通过生物信息手段对其理化性质、蛋白...【目的】获得雨生红球藻中紫外抗性蛋白(Uvresistance locus 8,UVR8)的cDNA序列全长,并进行生物信息分析。【方法】以雨生红球藻为研究对象,通过同源克隆方法获得紫外抗性蛋白UVR8的cDNA序列全长,并通过生物信息手段对其理化性质、蛋白结构及系统进化进行分析。【结果】序列分析表明,HaeUVR8的编码区全长为1554 bp,共编码517个氨基酸,预测理论等电点为5.56,理论分子量为54.31 kD。通过BLASTp分析,与拟南芥中UVR8的相似性达到51%,与莱菌衣藻中UVR8的相似性达到59%。通过蛋白保守结构域分析,HaeUVR8蛋白中存在UVR8蛋白的典型结构域,包括7个叶片螺旋结构和保守的色氨酸残基。系统进化分析表明,高等植物和真核绿藻来源UVR8s有共同祖先。【结论】本研究首次获得雨生红球藻中编码UVR8的基因序列,发现其结构与高等植物UVR8相似,暗示二者可能有相似的作用机制,为雨生红球藻中UVR8的表达、功能研究奠定基础,同时为解析雨生红球藻适应紫外光的分子机制提供线索。展开更多
Gynogenesis is an established technique to generate all female type offspring and this technique has been successfully induced diploid gynogens progeny in aquatic animals of fishes and crustaceans.Monosex culture of a...Gynogenesis is an established technique to generate all female type offspring and this technique has been successfully induced diploid gynogens progeny in aquatic animals of fishes and crustaceans.Monosex culture of all female shrimp and fishes were selected attribute to all female type offspring which have better size than male and help increase the market size and profitable.This article discusses on the protocol applied to produce gynogens progeny and the successful rate of gynogenesis production in fishes,molluscs and aquatic crustaceans of shrimps in general.Overall most of the UV length applied for irradiated the sperm were around 254-365 nm for(20-40 s),(20-80 s)and(5-8 s)for shrimps,254 nm,30 s for molluscs species and for fishes were around 254 nm for(1.5min)and(2-12 min)time of exposure respectively.For gynogenesis induction,the fertilized eggs were treated with cold shock,heat shock or cytochalasin-B for both shrimp and fishes gynogens technique.Fertilization rate was identified around 4.33%-19.67%in shrimp.Successful hatching rate was identified around 3.0%,14.9%-37.2%of gynogens offspring in shrimp and various percentages of hatching rates were identified from each species of fish gynogens.Overall,there is still low survival rate of gynogens produced using gynogenesis technique and further study should be carried out to improve the gynogens production.The discussed protocols serve as a guide lines for the gynogenesis technique application of all female monosex culture in the future.展开更多
文摘【目的】获得雨生红球藻中紫外抗性蛋白(Uvresistance locus 8,UVR8)的cDNA序列全长,并进行生物信息分析。【方法】以雨生红球藻为研究对象,通过同源克隆方法获得紫外抗性蛋白UVR8的cDNA序列全长,并通过生物信息手段对其理化性质、蛋白结构及系统进化进行分析。【结果】序列分析表明,HaeUVR8的编码区全长为1554 bp,共编码517个氨基酸,预测理论等电点为5.56,理论分子量为54.31 kD。通过BLASTp分析,与拟南芥中UVR8的相似性达到51%,与莱菌衣藻中UVR8的相似性达到59%。通过蛋白保守结构域分析,HaeUVR8蛋白中存在UVR8蛋白的典型结构域,包括7个叶片螺旋结构和保守的色氨酸残基。系统进化分析表明,高等植物和真核绿藻来源UVR8s有共同祖先。【结论】本研究首次获得雨生红球藻中编码UVR8的基因序列,发现其结构与高等植物UVR8相似,暗示二者可能有相似的作用机制,为雨生红球藻中UVR8的表达、功能研究奠定基础,同时为解析雨生红球藻适应紫外光的分子机制提供线索。
文摘Gynogenesis is an established technique to generate all female type offspring and this technique has been successfully induced diploid gynogens progeny in aquatic animals of fishes and crustaceans.Monosex culture of all female shrimp and fishes were selected attribute to all female type offspring which have better size than male and help increase the market size and profitable.This article discusses on the protocol applied to produce gynogens progeny and the successful rate of gynogenesis production in fishes,molluscs and aquatic crustaceans of shrimps in general.Overall most of the UV length applied for irradiated the sperm were around 254-365 nm for(20-40 s),(20-80 s)and(5-8 s)for shrimps,254 nm,30 s for molluscs species and for fishes were around 254 nm for(1.5min)and(2-12 min)time of exposure respectively.For gynogenesis induction,the fertilized eggs were treated with cold shock,heat shock or cytochalasin-B for both shrimp and fishes gynogens technique.Fertilization rate was identified around 4.33%-19.67%in shrimp.Successful hatching rate was identified around 3.0%,14.9%-37.2%of gynogens offspring in shrimp and various percentages of hatching rates were identified from each species of fish gynogens.Overall,there is still low survival rate of gynogens produced using gynogenesis technique and further study should be carried out to improve the gynogens production.The discussed protocols serve as a guide lines for the gynogenesis technique application of all female monosex culture in the future.
