河南农业大学学报2018，Vol.52Issue(3)：342-349,8.
低温及光照对四季秋海棠叶片花色素苷合成的诱导及调控机理
Induction and regulation mechanism of low temperature and light on anthocyanin biosynthesis in leaves of Begonia semperflorens
摘要
Abstract
This paper presents studies on the induction of low temperature and excess light energy pro-duced by different light intensities on anthocyanin biosynthesis in leaves of Begonia semperflorens.The results showed that LD(16/6 ℃,100 μmol·m-2·s-1)-exposed plants did not produce excess light energy,as compared with CC(25/15 ℃,200 μmol·m-2·s-1)-exposed plants.However,significant reductions in Fv/Fm、Fv/Fo,ФPSⅡ,qP,and PCR values,and significant increases in NPQ,HDR,H2O2,and O-2·production rates under both treatments of low temperature and constant light(16/6 ℃,200 μmol·m-2·s-1,LC)and low temperature and high light(16/6 ℃,500 μmol·m-2·s-1,LH)indicated that LC and LH treatments produced excess light energy in leaves of B.semperflorens.And more excess light energy was produced by the plants under LH treatment.At the same time,the production of excess light energy under LC and LH treatments was accompanied by an increased in the expression of anthocyanin synthesis genes BsPAL,BsCHS,BsF3H,and BsANS and ultimately in-creased the content of anthocyanins in the leaves.关键词
四季秋海棠/低温/光照/过剩光能/花色素苷Key words
Begonia semperflorens/low temperature/light/excess light energy/anthocyanin分类
农业科技引用本文复制引用
屈莹,谢久凤,王珂,齐睿,白雪,张开明..低温及光照对四季秋海棠叶片花色素苷合成的诱导及调控机理[J].河南农业大学学报,2018,52(3):342-349,8.基金项目
河南省自然科学基金项目(182300410091) （182300410091）
河南省高校重点科研项目(18B220004) （18B220004）
