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	Photosynthetic parameters and carbon reserves of a resurrection plant Reaumuria soongorica during dehydration and rehydration
	Xu, Danghui1,2; Su, Peixi2; Zhang, Renyi1; Li, Honglin1; Zhao, Liang2; Wang, Gang1
刊名	PLANT GROWTH REGULATION
	2010-04-01
卷号	60期号:3页码:183-190
关键词	Resurrection plant Carbon reserves Rehydration Stomatal conductance Dormancy
ISSN号	0167-6903
DOI	10.1007/s10725-009-9440-6
通讯作者	Wang, Gang(wgmg36@lzu.edu.cn)
英文摘要	The effects of dehydration and subsequent rehydration on photosynthetic parameters and carbon reserves were investigated in the resurrection plant Reaumuria soongorica. Dehydration was imposed by withholding water and covering plants with a PVC sheet when it rained, over a period of 53 days, by which time all leaves had been shed. Thereafter, plants were watered at 7-day intervals. The diurnal course of the net photosynthetic rate (Pn) was bimodal under well-watered conditions. After a period of withholding water, the second peak disappeared, and Pn, instantaneous water use efficiency (WUE), stomatal conductance (gs) and intercellular CO(2) concentration (Ci) decreased, but sugar, starch and non-structural carbohydrate (NSC) reserves increased. It was concluded that under the conditions of high temperature and dehydration, the reduction of Pn should be mainly attributed to gs. On rehydration Pn, gs, Ci and WUE increased slightly in the stem. Accompanying new leaf production, carbon reserves in the stem decreased. This indicated that carbon reserves in the stem have two important ecological roles, survival during dormant periods and support of vegetative regrowth following rehydration.
收录类别	SCI
WOS关键词	HABERLEA-RHODOPENSIS ; TROPICAL FOREST ; CARBOHYDRATE ; DESICCATION ; TOLERANT ; LEAVES ; POPULATION ; MECHANISMS ; RESPONSES ; STORAGE
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000275462400003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556431
专题	寒区旱区环境与工程研究所
通讯作者	Wang, Gang
作者单位	1.Lanzhou Univ, Sch Life Sci, Key Lab Arid & Grassland Ecol, MOE, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xu, Danghui,Su, Peixi,Zhang, Renyi,et al. Photosynthetic parameters and carbon reserves of a resurrection plant Reaumuria soongorica during dehydration and rehydration[J]. PLANT GROWTH REGULATION,2010,60(3):183-190.
APA	Xu, Danghui,Su, Peixi,Zhang, Renyi,Li, Honglin,Zhao, Liang,&Wang, Gang.(2010).Photosynthetic parameters and carbon reserves of a resurrection plant Reaumuria soongorica during dehydration and rehydration.PLANT GROWTH REGULATION,60(3),183-190.
MLA	Xu, Danghui,et al."Photosynthetic parameters and carbon reserves of a resurrection plant Reaumuria soongorica during dehydration and rehydration".PLANT GROWTH REGULATION 60.3(2010):183-190.

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