期刊文献+

Combining gas exchange and chlorophyll a fluorescence measurements to analyze the photosynthetic activity of drip-irrigated cotton under different soil water deficits 预览

Combining gas exchange and chlorophyll a fluorescence measurements to analyze the photosynthetic activity of drip-irrigated cotton under different soil water deficits
在线阅读 下载PDF
分享 导出
摘要 Gas exchange and chlorophyll a fluorescence were measured to study the effects of soil water deficit(75, 60 and 45% of field capacity, FC) on the photosynthetic activity of drip-irrigated cotton under field conditions. At light intensities above 1 200 μmol m-2 s-1, leaf net photosynthetic rate(Pn) at 60 and 45% FC was 0.75 and 0.45 times respectively than that of 75% FC. The chlorophyll content, leaf water potential and yield decreased as soil water deficit decreased. Fiber length was significantly lower at 45% FC than at 75% FC. The actual quantum yield of the photosystem II(PSII) primary photochemistry and the photochemical quenching were significantly greater at 60% FC than at 75% FC. The electron transport rate and non-photochemical quenching at 45% FC were 0.91 and 1.29 times than those at 75% FC, respectively. The amplitudes of the K- and L-bands were higher at 45% FC than at 60% FC. As soil water content decreased, active PSII reaction centers per chlorophyll decreased, functional PSII antenna size increased, and energetic connectivity between PSII units decreased. Electron flow from plastoquinol to the PSI end electron acceptors was significantly lower at 45% FC than at 75% FC. Similar to the effect on leaf Pn, water deficit reduced the performance index(PIABS, total) in the dark-adapted state. These results suggest that(i) the effect of mild water deficit on photosystem activity was mainly related to processes between plastoquinol and the PSI end electron acceptors,(ii) PSI end electron acceptors were only affected at moderate water deficit, and(iii) PIABS, total can reliably indicate the effect of water deficit on the energy supply for cotton metabolism. Gas exchange and chlorophyll a fluorescence were measured to study the effects of soil water deficit (75, 60 and 45% of field capacity, FC) on the photosynthetic activity of drip-irrigated cotton under field conditions. At light intensities above 1 200 IJmol m-2 s-1, leaf net photosynthetic rate (mn) at 60 and 45% FC was 0.75 and 0.45 times respectively than that of 75% FC. The chlorophyll content, leaf water potential and yield decreased as soil water deficit decreased. Fiber length was significantly lower at 45% FC than at 75% FC. The actual quantum yield of the photosystem II (PSII) primary photo- chemistry and the photochemical quenching were significantly greater at 60% FC than at 75% FC. The electron transport rate and non-photochemical quenching at 45% FC were 0.91 and 1.29 times than those at 75% FC, respectively. The amplitudes of the K- and L-bands were higher at 45% FC than at 60% FC. As soil water content decreased, active PSII reaction centers per chlorophyll decreased, functional PSII antenna size increased, and energetic connectivity between PSII units decreased. Electron flow from plastoquinol to the PSI end electron acceptors was significantly lower at 45% FC than at 75% FC. Similar to the effect on leaf Po, water deficit reduced the performance index (PIABs, tot) in the dark-adapted state. These results suggest that (i) the effect of mild water deficit on photosystem activity was mainly related to processes between plastoquinol and the PSI end electron acceptors, (ii) PSI end electron acceptors were only affected at moderate water deficit, and (iii) PIABs. tota can reliably indicate the effect of water deficit on the energy supply for cotton metabolism.
作者 LUO Hong-hai Tsimilli-michael Merop ZHANG Ya-li ZHANG Wang-feng LUO Hong-hai;Tsimilli-michael Merope;ZHANG Ya-li;ZHANG Wang-feng;Key Laboratory of Oasis Ecology Agriculture, Xinjiang Production and Construction Group, Shihezi University;Bioenergetics Laboratory, University of Geneva;
出处 《农业科学学报:英文版》 SCIE CAS CSCD 2016年第6期1256-1266,共11页 Agricultural Sciences in China
基金 supported by the National Natural Science Foundation of China (31401321 and U1203283) the Pairing Program of Shihezi University with Eminent Scholars in Elite Universities (SDJDZ201510) the Swiss National Science Foundation (200021-116765)
关键词 叶绿素a荧光 光合活性 气体交换 土壤水分条件 棉花 测量分析 滴灌 土壤水分亏缺 cotton, drought, JIP-test, modulated fluorescence quenching analysis, photosynthetic rate
作者简介 LUO Hong-hai, E-mail: luohonghai79@163.com Correspondence ZHANG Wang-feng, Tel: +86-993-2057326, Fax: +86-993-2057999, E-mail: ZwLshzu@163.com These authors contributed equally to this study.
  • 相关文献

参考文献25

  • 1Chaves M M. 1991. Effects of water deficits on carbon assimilation. Jouma! of Experimental Botany, 42, 1-16. 被引量:1
  • 2Chen S G, Kang Y, Zhang M, Wang X X, Strasser R J, Zhou B, Qiang S. 2015. Differential sensitivity to the potential bioherbicide tenuazonic acid probed by the JIP-test based on fast chlorophyll fluorescence kinetics. Environmental and Experimental Botany, 112, 1-15. 被引量:1
  • 3Chen Y H, Hsu B D. 1995. Effects of dehydration on the electron transport of Chlorella. An in vivo fluorescence study. Photosynthesis Research, 46, 295-299. 被引量:1
  • 4Demetriou G, Neonaki C, Navakoudis E, Kotzabasis K. 2007. Salt stress impact on the molecular structure and function of the photosynthetic apparatus-theprotective role of polyamines. Biochimica et Biophysica Acta-Bioenergetics, 1767, 272-280. 被引量:1
  • 5Demmig-Adams B. 1990. Carotenoids and photoprotection in plant: A role for the xanthophyll zeaxanthin. Biochimica et Biophysica Acta-Bioenergetics, 1020, 1-24. 被引量:1
  • 6Ennahli S, Earl H J. 2005. Physiological limitations tophotosynthetic carbon assimilation in cotton under water stress. Crop Science, 45, 2374-2382. 被引量:1
  • 7Genty B, Briantais J M, Da Silva J B V. 1987. Effects of drought on primary photosynthetic processes of cotton leaves. Plant Physiology, 83, 360-364. 被引量:1
  • 8Hsiao T C. 1973. Plant responses to water stress. Annual Review of Plant Biology, 24, 519-570. 被引量:1
  • 9Jiang C D, Gao H Y, Zou Q. 2001. Enhanced thermal energy dissipation depending on xanthophyll cycle and D1 protein turnover in iron-deficient maize leaves under high irradiance. Photosynthetica, 39, 269-274. 被引量:1
  • 10Jiao X L. 2014. The effects of non-sufficient irrigation on boll development and fibre quality of cotton. MSc thesis, Xinjiang Agriculture University, China. (in Chinese). 被引量:1
投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈