• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Russian Journal of Plant Physiology >Effect of ABA on Photosynthesis and Chlorophyll Fluorescence in Emmenopterys henri Oliv. under High Light
【24h】

Effect of ABA on Photosynthesis and Chlorophyll Fluorescence in Emmenopterys henri Oliv. under High Light

机译：Effect of ABA on Photosynthesis and Chlorophyll Fluorescence in Emmenopterys henri Oliv. under High Light

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The effect of exogenous abscisic acid (ABA) on photosynthesis in Emmenopterys henryi Oliv. under high light (HL) was investigated. HL resulted in reduction of chlorophyll content, net photosynthetic rate (P-N), stomatal conductance (g(s)), transpiration rate (Tr), instantaneous carboxylation efficiency (ICE) whereas increase of intercellular CO2 concentration (Ci), which returned more or less after removal of HL. Application of ABA alleviated the decrease of chlorophyll content, P-N and ICE under HL and promoted the recovery of them after removal of HL while further depressed g(s), Tr and Ci induced by HL and delayed the recovery of them. HL resulted in reduction of the maximal efficiency of PSII photochemistry (F-v/F-m), the PSII potential activity (F-v/F-o), photochemical quenching (qP), the actual quantum yield of PSII (Y(II)), the proportion of heat dissipation (NPQ), the regulated-energy dissipation (Y(NPQ)) and the electron transport rate (rETR (II)) while significant increase of unregulated energy dissipation (Y(NO)), which were alleviated by ABA pretreatment. The recovery of F-v/F-m, F-v/F-o, qP, Y(II), NPQ, Y(NPQ) and rETR (II) after relieve of HL were advanced by ABA pretreatment. These results suggest that ABA pretreatment alleviated the adverse effect of HL on photosynthesis in E. henryi during HL and enhanced its recovery by alleviating chlorophyll degradation, improving ICE, promoting repair of PSII reaction center, allocating more energy to photochemical reaction, maintaining electron transport activity. Anthocyanin accumulation induced by HL was inhibited by ABA pretreatment. The role of anthocyanin in the protection function of ABA under HL remain to be further explored.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号