A self-photoprotection mechanism helps Stipa baicalensis adapt to future climate change

doi:10.1038/srep25839

	A self-photoprotection mechanism helps Stipa baicalensis adapt to future climate change
	Song, Xiliang 2; Zhou, Guangsheng 1; Xu, Zhenzhu; Lv, Xiaomin 2; Wang, Yuhui
	2016
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6
摘要	We examined the photosynthetic responses of Stipa baicalensis to relative long-term exposure (42 days) to the predicted elevated temperature and water availability changes to determine the mechanisms through which the plant would acclimate to future climate change. Two thermal regimes (ambient and + 4 degrees C) and three irrigation levels (partial, normal and excess) were used in environmental control chambers. The gas exchange parameters, light response curves and A/Ci curves were determined. The elevated temperature and partial irrigation reduced the net photosynthetic rate due to a limitation in the photosynthetic capacity instead of the intercellular CO2 concentration. Partial irrigation decreased Rubisco activation and limited RuBP regeneration. The reduction in V-cmax increased with increasing temperature. Excess irrigation offset the negative effect of drought and led to a partial recovery of the photosynthetic capacity. Although its light use efficiency was restricted, the use of light and dark respiration by Stipa baicalensis was unchanged. We concluded that nonstomatal limitation was the primary reason for photosynthesis regulation in Stipa baicalensis under relative long-term climate change conditions. Although climate change caused reductions in the light use efficiency and photosynthetic rate, a self-photoprotection mechanism in Stipa baicalensis resulted in its high ability to maintain normal live activities.
学科领域	Multidisciplinary Sciences
DOI	10.1038/srep25839
收录类别	SCI
语种	英语
WOS关键词	PHOTOSYNTHETIC LIGHT-RESPONSE ; ELEVATED ATMOSPHERIC CO2 ; TEMPERATURE RESPONSE ; WATER-STRESS ; STOMATAL CONDUCTANCE ; HEAT-STRESS ; TRANSGENIC TOBACCO ; LEAF RESPIRATION ; RUBISCO ACTIVASE ; REDUCED AMOUNTS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000375536100001
出版者	NATURE PORTFOLIO
文献子类	Article
出版地	BERLIN
资助机构	China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3] ; Chinese Academy of Sciences 'Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues' [XDA 05050408]
作者邮箱	gszhou@ibcas.ac.cn ; yhwang@ibcas.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25105
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China 2.China Meteorol Adm, Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Song, Xiliang,Zhou, Guangsheng,Xu, Zhenzhu,et al. A self-photoprotection mechanism helps Stipa baicalensis adapt to future climate change[J]. SCIENTIFIC REPORTS,2016,6.
APA	Song, Xiliang,Zhou, Guangsheng,Xu, Zhenzhu,Lv, Xiaomin,&Wang, Yuhui.(2016).A self-photoprotection mechanism helps Stipa baicalensis adapt to future climate change.SCIENTIFIC REPORTS,6.
MLA	Song, Xiliang,et al."A self-photoprotection mechanism helps Stipa baicalensis adapt to future climate change".SCIENTIFIC REPORTS 6(2016).

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