典型文献
Relationships between leaf color changes, pigment levels, enzyme activity, photosynthetic fluorescence characteristics and chloroplast ultrastructure of Liquidambar formosana Hance
文献摘要：
Liquidambarsformosanas Hance is an attractive landscape tree species because its leaves gradually change from green to red, purple or orange in autumn. In this study, the red variety of L.sformosanas was used to establish a quantitative model of leaf color. Physiological changes in leaf color, pigment levels, enzyme activity, photosynthetic fluorescence characteristics and chloroplast ultrastructure were monitored. The relationship between leaf color and physiological structure indices was quantitatively analyzed to systematically explore the mechanisms behind leaf color. Our data showed that with a decrease in external tempera-tures, chloroplast numbers and sizes gradually decreased, thylakoid membranes became distorted, and chlorophyll synthesis was blocked and gradually decreased. As a result, chloroplast membranes could not be biosynthesized nor-mally; net photosynthesis, maximum and actual photochemi-cal efficiency, and rate of electron transfer decreased rapidly. Excess light energy caused leaf photoinhibition. With inten-sification of photoinhibition, leaves protected themselves using two mechanisms. In the first, anthocyanin synthesis was promoted by increasing chalcone isomerase and flavo-noid glycosyltransferase activities and soluble sugar content so as to increase anthocyanin to filter light and eliminate reactive oxygen species to reduce photoinhibition. In the second, excessive light energy was consumed in the form of heat energy by increasing the non-photochemical quenching coefficient. These processes tuned the leaves red.
文献关键词：
中图分类号：
作者姓名：
Guoping Yin;Yong Wang;Yufei Xiao;Jisheng Yang;Renjie Wang;Ying Jiang;Ronglin Huang;Xiongsheng Liu;Yi Jiang
作者机构：
Guangxi Key Laboratory of Superior Trees Resource Cultivation,Guangxi Zhuang Autonomous Region Forestry Research Institute,Nanning 530002,People's Republic of China;Guangxi University,Nanning 53000,People's Republic of China
文献出处：
引用格式：
[1]Guoping Yin;Yong Wang;Yufei Xiao;Jisheng Yang;Renjie Wang;Ying Jiang;Ronglin Huang;Xiongsheng Liu;Yi Jiang-.Relationships between leaf color changes, pigment levels, enzyme activity, photosynthetic fluorescence characteristics and chloroplast ultrastructure of Liquidambar formosana Hance)[J].林业研究（英文版）,2022(05):1559-1572
A类：
Liquidambarsformosanas,sformosanas,photochemi,flavo
B类：
Relationships,between,leaf,color,changes,pigment,levels,enzyme,activity,photosynthetic,fluorescence,characteristics,chloroplast,ultrastructure,Hance,attractive,landscape,tree,species,because,its,leaves,gradually,from,green,purple,orange,autumn,In,this,study,variety,was,establish,model,Physiological,were,monitored,relationship,physiological,indices,quantitatively,analyzed,systematically,explore,mechanisms,behind,Our,data,showed,that,external,tempera,tures,numbers,sizes,decreased,thylakoid,membranes,became,distorted,chlorophyll,blocked,result,could,not,biosynthesized,nor,mally,net,photosynthesis,maximum,actual,efficiency,rate,electron,rapidly,Excess,light,energy,caused,photoinhibition,With,inten,sification,protected,themselves,using,two,first,anthocyanin,promoted,by,increasing,chalcone,isomerase,noid,glycosyltransferase,activities,soluble,sugar,content,increase,filter,eliminate,reactive,oxygen,reduce,second,excessive,consumed,heat,photochemical,quenching,coefficient,These,processes,tuned
AB值：
0.574737
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