Physiological and biochemical responses to saline-alkaline stress in two halophytic grass species with different photosynthetic pathways

doi:10.1007/s11099-015-0094-5

	Physiological and biochemical responses to saline-alkaline stress in two halophytic grass species with different photosynthetic pathways
	Guo, C. Y.; Wang, X. Z.; Chen, L.; Ma, L. N.; Wang, R. Z.
	2015
发表期刊	PHOTOSYNTHETICA
ISSN	0300-3604
卷号	53 期号:1 页码:128-135
摘要	We examined the physiological and biochemical responses of two halophytic grasses with different photosynthetic pathways, Puccinellia tenuiflora (C-3) and Chloris virgata (C-4), to saline-alkaline stresses. Plants were grown at different Na2CO3 concentrations (from 0 to 200 mM). Low Na2CO3 (< 12.5 mM) enhanced seed germination and plant growth, whereas high Na2CO3 concentrations (> 100 mM) reduced seed germination by 45% in P. tenuiflora and by 30% in C. virgata. Compared to C. virgata, P. tenuiflora showed lower net photosynthesis, stomatal conductance, intercellular CO2 concentration, and water-use efficiency under the same treatment. C. virgata exhibited also relatively higher ATP content, K+ concentration, and the K+/Na+ ratio under the stress treatments implying that salt tolerance may be the main mechanism for salt resistance in this species. Our results demonstrated that the C. virgata was relatively more resistant to saline-alkaline stress than the co-occurring P. tenuiflora; both two species adapt to their native saline-alkaline habitat by different physiological mechanisms.
关键词	ATP content gas exchange membrane permeability Na2CO3 stress proline salinity
学科领域	Plant Sciences
DOI	10.1007/s11099-015-0094-5
收录类别	SCI
语种	英语
WOS关键词	WATER-STRESS ; SALT TOLERANCE ; MEMBRANE ; PROLINE ; DROUGHT ; PLANTS ; WHEAT ; ROOT ; ATP
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000349020700015
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-9058
资助机构	National Scientific Foundation of China [31170304, 31070228]
作者邮箱	wangrz@ibcas.ac.cn
引用统计	被引频次：15[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/2S10CLM1/25606
专题	植被与环境变化国家重点实验室
作者单位	1.[Guo, C. Y. 2.Ma, L. N. 3.Wang, R. Z.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.[Wang, X. Z.] Indiana Univ Purdue Univ, Dept Biol, Indianapolis, IN 46202 USA 5.[Chen, L.] Hubei Normal Univ, Coll Life Sci, Huangshi 435002, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Guo, C. Y.,Wang, X. Z.,Chen, L.,et al. Physiological and biochemical responses to saline-alkaline stress in two halophytic grass species with different photosynthetic pathways[J]. PHOTOSYNTHETICA,2015,53(1):128-135.
APA	Guo, C. Y.,Wang, X. Z.,Chen, L.,Ma, L. N.,&Wang, R. Z..(2015).Physiological and biochemical responses to saline-alkaline stress in two halophytic grass species with different photosynthetic pathways.PHOTOSYNTHETICA,53(1),128-135.
MLA	Guo, C. Y.,et al."Physiological and biochemical responses to saline-alkaline stress in two halophytic grass species with different photosynthetic pathways".PHOTOSYNTHETICA 53.1(2015):128-135.

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