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	Anatomical, morphological and metabolic acclimation in the resurrection plant Reaumuria soongorica during dehydration and rehydration
	Liu, Y. B.; Wang, G.; Liu, J.; Zhao, X.; Tan, H. J.; Li, X. R.
刊名	JOURNAL OF ARID ENVIRONMENTS
	2007-07-01
卷号	70期号:2页码:183-194
关键词	anatomy choloroplast ultrastructure desiccation metabolic products nuclear magnetic resonance
ISSN号	0140-1963
DOI	10.1016/j.jaridenv.2006.12.020
通讯作者	Li, X. R.(lxinrong@lzb.ac.cn)
英文摘要	Reaumuria soonyorica (Pall.) Maxim., a short woody shrub found widely in semi-arid areas of China, can survive severe desiccation of its vegetative organs. We studied the anatomical, morphological and metabolic acclimation of R. soongorica in leaf arid stem tissues during desiccation arid in stems upon rewatering. During dehydration, the mesophyll arid choloroplast ultrastructure were disturbed in leaves, but not in stems. Water storage tissues were rich in osmotic substances in both organs. Upon rewatering, osmophilic globules in stems disappeared and a repair process was observed in phloem. Highly specialized stomata, which are ring-shaped and raised, were found to expand in hydrated stems and dried leaves. The many glands present oil leaves were assumed to play a role in desiccation tolerance. Nuclear magnetic resonance (NMR) data showed that sucrose concentrations increased with stress, which probably resulted in higher concentrations of osmotic Substances in water storage tissues. Malate and proline, which accumulated in stems during water loss, may play a major role in osmoregulation. In conclusion, the stein was able not only to maintain the structural integrity of mesophyll cells and chloroplasts during dehydration, but also to repair the phloem structure on rewatering. The stem also accumulated metabolic products that play roles in osmoregulation. All these findings indicate that the stem is an essential organ for water deficit survival. (C) 2007 Elsevier Ltd. All rights reserved.
收录类别	SCI
WOS关键词	DESICCATION TOLERANCE ; CRATEROSTIGMA-WILMSII ; MECHANISMS ; DROUGHT ; STRESS ; LEAVES ; LIGHT ; NMR ; PHOTOSYNTHESIS ; ACCUMULATION
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
语种	英语
出版者	ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
WOS记录号	WOS:000246661600001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555945
专题	寒区旱区环境与工程研究所
通讯作者	Li, X. R.
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Sch Life Sci, Key Lab Arid & Grassland Agroecol, Minist Educ, Lanzhou 730000, Peoples R China 3.Virginia Polytech Inst & State Univ, Dept Plant Pathol Physiol & Weed Sci, Blacksburg, VA 24060 USA
推荐引用方式 GB/T 7714	Liu, Y. B.,Wang, G.,Liu, J.,et al. Anatomical, morphological and metabolic acclimation in the resurrection plant Reaumuria soongorica during dehydration and rehydration[J]. JOURNAL OF ARID ENVIRONMENTS,2007,70(2):183-194.
APA	Liu, Y. B.,Wang, G.,Liu, J.,Zhao, X.,Tan, H. J.,&Li, X. R..(2007).Anatomical, morphological and metabolic acclimation in the resurrection plant Reaumuria soongorica during dehydration and rehydration.JOURNAL OF ARID ENVIRONMENTS,70(2),183-194.
MLA	Liu, Y. B.,et al."Anatomical, morphological and metabolic acclimation in the resurrection plant Reaumuria soongorica during dehydration and rehydration".JOURNAL OF ARID ENVIRONMENTS 70.2(2007):183-194.

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