Alleviation of photosynthetic inhibition in copper-stressed tomatoes through rebalance of ion content by exogenous nitric oxide

doi:10.3906/bot-1312-17

	Alleviation of photosynthetic inhibition in copper-stressed tomatoes through rebalance of ion content by exogenous nitric oxide
	Wang,Lina; Yang,Xiaoyu; Ren,Zhonghai; Hu,Xiangyang; Wang,Xiufeng; Wang,XF (reprint author),Shandong Agr Univ,Coll Hort Sci & Engn,Tai An,Shandong,Peoples R China.; xfwang@sdau.edu.cn
	2015
发表期刊	TURKISH JOURNAL OF BOTANY
卷号	39 期号:1 页码:10-22
摘要	Copper (Cu) is an essential element that plays a very important role in plant growth and development. Its accumulation in soil is now considered a serious environmental problem endangering agricultural production and human health. In this study, the influence of exogenous nitric oxide (NO) on photosynthesis, Cu, magnesium (Mg), and iron (Fe) contents was studied in tomato seedlings under Cu stress grown in hydroponic culture. The results showed that the addition of sodium nitroprusside (SNP), a donor of exogenous NO, significantly alleviated photosynthetic inhibition in Cu-stressed tomatoes, including the recovery of photosynthetic pigment content and chlorophyll a fluorescence and the improvement of net photosynthetic rate, stomatal conductance, and transpiration rate. Application of exogenous NO by SNP reduced the excessive accumulation of Cu and recovered Mg and Fe contents in Cu-stressed tomatoes. This positive involvement of exogenous NO in tomato tolerance to Cu stress was further confirmed by addition of 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO), a specific NO scavenger, which resulted in further reduction of photosynthesis and more severe disturbance of ion homeostasis in Cu-stressed seedlings. These results indicate that rebalance of ion content was involved in alleviation of photosynthesis inhibition in Cu-stressed tomatoes by exogenous NO.
关键词	Cptio Essential Elements Photosynthesis Sodium Nitroprusside
学科领域	Plant Sciences
DOI	10.3906/bot-1312-17
收录类别	SCI
语种	英语
WOS记录号	WOS:000346848300002
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/20666
专题	中国科学院青藏高原研究所昆明部
通讯作者	Wang,XF (reprint author),Shandong Agr Univ,Coll Hort Sci & Engn,Tai An,Shandong,Peoples R China.; xfwang@sdau.edu.cn
推荐引用方式 GB/T 7714	Wang,Lina,Yang,Xiaoyu,Ren,Zhonghai,et al. Alleviation of photosynthetic inhibition in copper-stressed tomatoes through rebalance of ion content by exogenous nitric oxide[J]. TURKISH JOURNAL OF BOTANY,2015,39(1):10-22.
APA	Wang,Lina.,Yang,Xiaoyu.,Ren,Zhonghai.,Hu,Xiangyang.,Wang,Xiufeng.,...&xfwang@sdau.edu.cn.(2015).Alleviation of photosynthetic inhibition in copper-stressed tomatoes through rebalance of ion content by exogenous nitric oxide.TURKISH JOURNAL OF BOTANY,39(1),10-22.
MLA	Wang,Lina,et al."Alleviation of photosynthetic inhibition in copper-stressed tomatoes through rebalance of ion content by exogenous nitric oxide".TURKISH JOURNAL OF BOTANY 39.1(2015):10-22.

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