论文题目: Enhanced aquaporin activity of two different genotypes of drought-resistant wheat (Triticum aestivum L.) cultivars facilitate their adaptation to drought stress

论文编号:
作者: 赵鸿彬, 张正斌,徐萍
刊物名称: Journal of Food, Agriculture & Environment
卷期页码: 8, (2), 1158-1161
发表年度: 2010
DOI: http://www.world-food.net/scientficjournal/2010/issue2.php
摘要: Inhibitory effects of mercury chloride (HgCl , 25 μM, 50 μM and 100 μM) on the activity of aquaporins (AQPs) were investigated by comparing two wheat (Triticum aestivum L.) cultivars with different drought resistance. Leaf photosynthetic rate (Pn), transpiration rate (Tr) and leaf water use efficiency (WUE = Pn/Tr) were measured. Our results showed that Hg toxicity repressed Pn, Tr and WUE in both ‘Shi4185’ (S4) and ‘Jinmai 47’ (JM). However, the regulation model of Pn, Tr and WUE was different between the two cultivars. Drought tolerance cultivar ‘JM’ showed a higher Hg toxicity tolerance than the irrigated land cultivar ‘S4’. Our results suggested that different Hg tolerance in the two cultivars is related to the different activity of AQP. Our study provides insight into the complicated mechanism of drought resistance and water-saving in wheat.