Improved photosynthetic water-use efficiency of potato due to partial stomatal closure induced by ABA signalling at mild soil water deficits
文献类型： 会议论文
第一作者： F. Liu
作者： F. Liu 1 ; M.N. Andersen; A. Shahnazari; S.E. Jacobsen; C.R. Jensen;
作者机构： 1.Department of Agricultural Sciences, Laboratory for Agrohydrology and Bioclimatology, Heojbakkegaard Alle 13, DK-2630 Taastrup, Denmark
关键词： Abscisic acid;Drought stress;Gas exchange;Photosynthetic water use efficiency;Solanum tuberosum L.
会议名称： Plant Nutrition for Food Security,Human Health and Environmental Protection
主办单位：
页码： 582-583
摘要： Potted potatoes (Solanum tuberosum L.) were grown in a climate-controlled glasshouse to investigate leaf gas-exchange characteristics during progressive soil drying. Stomatal conductance (g_s), light-saturated photosynthesis (A), leaf water potential(PSI_1), and xylem sap ABA concentration ([ABA]_(xylem)) were determined in well watered (WW) and drought-stressed (DS) plants. During soil drying g_s decreased linearly with increasing [ABA]_(xylem) when there was no detectable decrease in PSI_1; Alg_Sincreased linearly with decreasing g_s until the latter reached 0.2 mol m~(-2) s~(-1); below this point, it decreased sharply. It is concluded that during mild soil water deficits, g_s of potato is controlled by xylem-borne ABA. As a consequence of A being less sensitive to soil drying than g_s is, A/g_s increased at mild soil water deficits.
分类号： Q945.1
- 相关文献
[1]Salt acclimation induced salt tolerance is enhanced by abscisic acid priming in wheat. Wang, Zongshuai,Cai, Jian,Jiang, Dong,Li, Xiangnan,Zhu, Xiancan,Liu, Shengqun,Song, Fengbin,Wang, Yang,Qi, Xiaoning,Wang, Zongshuai,Wang, Fahong,Liu, Fulai,Zuo, Zhiyu,Duan, Peizi,Yang, Aizheng.
[2]Drought stress had a predominant effect over heat stress on three tomato cultivars subjected to combined stress. Zhou, Rong,Zhao, Liping,Wang, Yinlei,Yu, Wengui,Zhao, Tongmin,Zhou, Rong,Zhao, Liping,Wang, Yinlei,Yu, Wengui,Zhao, Tongmin,Zhou, Rong,Yu, Xiaqing,Wu, Zhen,Ottosen, Carl-Otto,Rosenqvist, Eva. 2017
