Differential freezing resistance and photoprotection in C-3 and C-4 eudicots and grasses

doi:10.1093/jxb/ert075

	Differential freezing resistance and photoprotection in C-3 and C-4 eudicots and grasses
	Liu, Mei-Zhen ; Osborne, Colin P.
	2013
发表期刊	JOURNAL OF EXPERIMENTAL BOTANY
ISSN	0022-0957
卷号	64 期号:8 页码:2183-2191
摘要	Globally, C-4 plants dominate hot, open environments, but this general pattern is underpinned by important differences in the biogeography of C-4 lineages. In particular, the species richness of C-4 Poaceae (grasses) increases strongly with increasing temperature, whereas that of the major C-4 eudicot group Chenopodiaceae correlates positively with aridity. Freezing tolerance is a crucial determinant of biogeographical relationships with temperature and is mediated by photodamage and cellular disruption by desiccation, but little is known about differences between C-4 families. This study hypothesized that there is a greater risk of freezing damage via these mechanisms in C-4 Poaceae than Chenopodiaceae, that freezing protection differs between the taxonomic groups, and that freezing tolerance of species is linked to arid habitat preference. Chlorophyll fluorescence, water relations, and freezing injury were compared in four C-3 and six C-4 species of Poaceae and Chenopodiaceae from the same Mongolian flora. Contrary to expectations, freezing-induced leaf mortality and photodamage were lower in Poaceae than Chenopodiaceae species, and unrelated to photosynthetic pathway. The freezing resistance of Poaceae species resulted from constitutive protection and cold acclimation and an ability to protect the photosynthetic apparatus from photodamage. Freezing protection was associated with low osmotic potential and low tissue elasticity, and freezing damage was accompanied by electrolyte leakage, consistent with cell-membrane disruption by ice. Both Chenopodiaceae and Poaceae had the potential to develop cold acclimation and withstand freezing during the growing season, which conflicted with the hypothesis. Instead, freezing tolerance was more closely associated with life history and ecological preference in these Mongolian species.
关键词	C-3 photosynthesis C-4 photosynthesis Chenopodiaceae cold acclimation freezing tolerance photodamage Poaceae water relations
学科领域	Plant Sciences
DOI	10.1093/jxb/ert075
收录类别	SCI
语种	英语
WOS关键词	WATER RELATIONS ; CHLOROPHYLL FLUORESCENCE ; COLD-ACCLIMATION ; XYLEM PRESSURE ; PHOTOSYNTHESIS ; TOLERANCE ; PLANTS ; CO2
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000319433200006
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1460-2431
资助机构	Royal Society(Royal Society of London) ; National Scientific Foundation of China(National Natural Science Foundation of China (NSFC)) ; Innovative Project of Chinese Academy of Sciences(Knowledge Innovation Program of the Chinese Academy of Sciences) ; Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues of the Chinese Academy of Sciences(Chinese Academy of Sciences) ; Young Scientist Foundation from the State Key Laboratory of Vegetation and Environmental Change of Institute of Botany, the Chinese Academy of Sciences
作品OA属性	Green Accepted, hybrid, Green Published
引用统计	被引频次：8[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/2S10CLM1/28096
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, Beijing 100093, Peoples R China 2.[Liu, Mei-Zhen 3.Osborne, Colin P.] Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England
推荐引用方式 GB/T 7714	Liu, Mei-Zhen,Osborne, Colin P.. Differential freezing resistance and photoprotection in C-3 and C-4 eudicots and grasses[J]. JOURNAL OF EXPERIMENTAL BOTANY,2013,64(8):2183-2191.
APA	Liu, Mei-Zhen,&Osborne, Colin P..(2013).Differential freezing resistance and photoprotection in C-3 and C-4 eudicots and grasses.JOURNAL OF EXPERIMENTAL BOTANY,64(8),2183-2191.
MLA	Liu, Mei-Zhen,et al."Differential freezing resistance and photoprotection in C-3 and C-4 eudicots and grasses".JOURNAL OF EXPERIMENTAL BOTANY 64.8(2013):2183-2191.

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