[Objectives]This study was conducted to investigate the diurnal variations of photosynthetic and physiological characteristics in 3-year-old Kadsura coccinea(Lem.)A.C.Smith plants.[Methods]A Li-6400 portable photosynt...[Objectives]This study was conducted to investigate the diurnal variations of photosynthetic and physiological characteristics in 3-year-old Kadsura coccinea(Lem.)A.C.Smith plants.[Methods]A Li-6400 portable photosynthetic system was used to study the diurnal variations of the photosynthetic physiological characteristics of K.coccinea.[Results]The diurnal variation of the net photosynthetic rate(Pn)of K.coccinea leaves showed a"double peak"curve,and there was a lunch break at noon.The maximum value of Pn[4.51 mmol/(m^(2)·s)]appeared at 10:00,and the daily average Pn was 3.98 mol/(m^(2)·s);and the stepwise regression analysis showed that photosynthetically active radiation(PAR)and stomatal conductance(Gs)were the main factors affecting Pn.The partial correlation analysis and path analysis showed that the order of effects on Pn was Gs>PAR.[Conclusions]This study provides a reference for further research on the development and utilization of K.coccinea.展开更多
目的研究黑老虎[Kadsura coccinea(Lem.)A. C. Smith]转录组特征,克隆三萜生物合成上游途径的关键酶基因角鲨烯合酶(KcSQS),为黑老虎资源利用奠定基础。方法对黑老虎不同部位进行转录组测序分析,根据筛选出的KcSQS候选基因序列设计引物...目的研究黑老虎[Kadsura coccinea(Lem.)A. C. Smith]转录组特征,克隆三萜生物合成上游途径的关键酶基因角鲨烯合酶(KcSQS),为黑老虎资源利用奠定基础。方法对黑老虎不同部位进行转录组测序分析,根据筛选出的KcSQS候选基因序列设计引物,利用PCR技术进行基因克隆,并借助生物学软件进行生物信息学分析。结果克隆得到一个KcSQS基因,包含全长1 227 bp的开放阅读框(ORF),编码408个氨基酸,预测其蛋白分子量为46.65 kD,定位于细胞质膜,含一段跨膜超螺旋结构。该基因在黑老虎叶片中表达量最高,与同科植物厚朴(Magnolia officinalis Rehd. et Wils.)角鲨烯合酶(MoSQS)蛋白序列相似性为76.77%,预测为角鲨烯合酶。结论该研究对黑老虎植物根、茎和叶进行转录组测序,成功克隆了角鲨烯合酶基因,并对其进行生物信息学分析,可为进一步研究黑老虎三萜类化合物的生物合成提供依据。展开更多
The cultivation technology were standardized for improving the yield and quality,and the commodity value and the competitiveness of fruit market,and solving the bottleneck problem—fruit quality and yield that affect ...The cultivation technology were standardized for improving the yield and quality,and the commodity value and the competitiveness of fruit market,and solving the bottleneck problem—fruit quality and yield that affect the industrial development of rare and multi-purpose wild fruit Kadsura coccinea(Lem.)A.C.Smith.Through the investigation of K.coccinea production area and planting area,collection and analysis of fruit samples,it was found that in most planting area,the varieties of K.coccinea were mixed,with great differences in fruit quality and yield,which makes it impossible to realize large-scale planting.In view of these problems,a series of studies have been carried out and the technical regulations for standardized planting of rare and multi-purpose wild fruit K.coccinea were formulated.展开更多
基金Supported by Guangxi Key R&D Program Project(GKAB18221091)Guilin Scientific Research and Planning Science and Technology Key Project(20160223-1)。
文摘[Objectives]This study was conducted to investigate the diurnal variations of photosynthetic and physiological characteristics in 3-year-old Kadsura coccinea(Lem.)A.C.Smith plants.[Methods]A Li-6400 portable photosynthetic system was used to study the diurnal variations of the photosynthetic physiological characteristics of K.coccinea.[Results]The diurnal variation of the net photosynthetic rate(Pn)of K.coccinea leaves showed a"double peak"curve,and there was a lunch break at noon.The maximum value of Pn[4.51 mmol/(m^(2)·s)]appeared at 10:00,and the daily average Pn was 3.98 mol/(m^(2)·s);and the stepwise regression analysis showed that photosynthetically active radiation(PAR)and stomatal conductance(Gs)were the main factors affecting Pn.The partial correlation analysis and path analysis showed that the order of effects on Pn was Gs>PAR.[Conclusions]This study provides a reference for further research on the development and utilization of K.coccinea.
基金Key R&D projects in Guangxi Zhuang Autonomous Region(GK AB18221091)Scientific Research and Scientific Planning of Guilin,Guangxi(20160223-1).
文摘The cultivation technology were standardized for improving the yield and quality,and the commodity value and the competitiveness of fruit market,and solving the bottleneck problem—fruit quality and yield that affect the industrial development of rare and multi-purpose wild fruit Kadsura coccinea(Lem.)A.C.Smith.Through the investigation of K.coccinea production area and planting area,collection and analysis of fruit samples,it was found that in most planting area,the varieties of K.coccinea were mixed,with great differences in fruit quality and yield,which makes it impossible to realize large-scale planting.In view of these problems,a series of studies have been carried out and the technical regulations for standardized planting of rare and multi-purpose wild fruit K.coccinea were formulated.
