Photorespiration plays an important role in the regulation of photosynthetic electron flow under fluctuating light in tobacco plants grown under full sunlight
Huang, Wei; Hu, Hong; Zhang, Shi-Bao
2015-08-11
发表期刊FRONTIERS IN PLANT SCIENCE
卷号6
摘要Plants usually experience dynamic fluctuations of light intensities under natural conditions. However, the responses of mesophyll conductance, CO2 assimilation, and photorespiration to light fluctuation are not well understood. To address this question, we measured photosynthetic parameters of gas exchange and chlorophyll fluorescence in tobacco leaves at 2-min intervals while irradiance levels alternated between 100 and 1200 mu mol photons m(-2) s(-1). Compared with leaves exposed to a constant light of 1200 mu mol photons m(-2) s(-1), both stomatal and mesophyll conductances were significantly restricted in leaves treated with fluctuating light condition. Meanwhile, CO2 assimilation rate and electron flow devoted to RuBP carboxylation at 1200 mu mol photons m(-2) s(-1) under fluctuating light were limited by the low chloroplast CO2 concentration. Analysis based on the C3 photosynthesis model indicated that, at 1200 mu mol photons m(-2) s(-1) under fluctuating light, the CO2 assimilation rate was limited by RuBP carboxylation. Electron flow devoted to RuBP oxygenation at 1200 mu mol photons m(-2) s(-1) under fluctuating light remained at nearly the maximum level throughout the experimental period. We conclude that fluctuating light restricts CO2 assimilation by decreasing both stomatal and mesophyll conductances. Under such conditions, photorespiration plays an important role in the regulation of photosynthetic electron flow.
关键词Co2 Assimilation Fluctuating Light Photorespiration Photosynthetic Electron Flow Mesophyll Conductance
DOI10.3389/fpls.2015.00621
收录类别SCI
语种英语
WOS记录号WOS:000359912300002
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/25103
专题资源植物与生物技术所级重点实验室
推荐引用方式
GB/T 7714
Huang, Wei,Hu, Hong,Zhang, Shi-Bao. Photorespiration plays an important role in the regulation of photosynthetic electron flow under fluctuating light in tobacco plants grown under full sunlight[J]. FRONTIERS IN PLANT SCIENCE,2015,6.
APA Huang, Wei,Hu, Hong,&Zhang, Shi-Bao.(2015).Photorespiration plays an important role in the regulation of photosynthetic electron flow under fluctuating light in tobacco plants grown under full sunlight.FRONTIERS IN PLANT SCIENCE,6.
MLA Huang, Wei,et al."Photorespiration plays an important role in the regulation of photosynthetic electron flow under fluctuating light in tobacco plants grown under full sunlight".FRONTIERS IN PLANT SCIENCE 6(2015).
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Huang-2015-FPLS-1.pd(1941KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Huang, Wei]的文章
[Hu, Hong]的文章
[Zhang, Shi-Bao]的文章
百度学术
百度学术中相似的文章
[Huang, Wei]的文章
[Hu, Hong]的文章
[Zhang, Shi-Bao]的文章
必应学术
必应学术中相似的文章
[Huang, Wei]的文章
[Hu, Hong]的文章
[Zhang, Shi-Bao]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Huang-2015-FPLS-1.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。