Modification of photosynthesis and growth responses to elevated CO2 by ozone in two cultivars of winter wheat with different years of release

doi:10.1093/jxb/ert005

	Modification of photosynthesis and growth responses to elevated CO2 by ozone in two cultivars of winter wheat with different years of release
	Biswas, D. K.; Xu, H.; Li, Y. G.; Ma, B. L.; Jiang, G. M.
	2013
发表期刊	JOURNAL OF EXPERIMENTAL BOTANY
ISSN	0022-0957
卷号	64 期号:6 页码:1485-1496
摘要	The beneficial effects of elevated CO2 on plants are expected to be compromised by the negative effects posed by other global changes. However, little is known about ozone (O-3)-induced modulation of elevated CO2 response in plants with differential sensitivity to O-3. An old (Triticum aestivum cv. Beijing 6, O-3 tolerant) and a modern (T. aestivum cv. Zhongmai 9, O-3 sensitive) winter wheat cultivar were exposed to elevated CO2 (714 ppm) and/or O-3 (72 ppb, for 7h d(1)) in open-topped chambers for 21 d. Plant responses to treatments were assessed by visible leaf symptoms, simultaneous measurements of gas exchange and chlorophyll a fluorescence, in vivo biochemical properties, and growth. It was found that elevated CO2 resulted in higher growth stimulation in the modern cultivar attributed to a higher energy capture and electron transport rate compared with the old cultivar. Exposure to O-3 caused a greater growth reduction in the modern cultivar due to higher O-3 uptake and a greater loss of photosystem II efficiency (mature leaf) and mesophyll cell activity (young leaf) than in the old cultivar. Elevated CO2 completely protected both cultivars against the deleterious effects of O-3 under elevated CO2 and O-3. The modern cultivar showed a greater relative loss of elevated CO2-induced growth stimulation due to higher O-3 uptake and greater O-3-induced photoinhibition than the old cultivar at elevated CO2 and O-3. Our findings suggest that the elevated CO2-induced growth stimulation in the modern cultivar attributed to higher energy capture and electron transport rate can be compromised by its higher O-3 uptake and greater O-3-induced photoinhibition under elevated CO2 and O-3 exposure.
关键词	elevated CO2 in vivo biochemical parameters ozone photosynthesis relative growth rate stomatal conductance Tritium aestivum L winter wheat
学科领域	Plant Sciences
DOI	10.1093/jxb/ert005
收录类别	SCI
语种	英语
WOS关键词	BISPHOSPHATE CARBOXYLASE OXYGENASE ; CARBON-DIOXIDE CONCENTRATION ; WATER-USE EFFICIENCY ; ATMOSPHERIC CO2 ; LEAF DEVELOPMENT ; PLANTS ; CROP ; APPARATUS ; EXPOSURE ; LEAVES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000317429500005
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1460-2431
资助机构	Chinese Academy of Sciences(Chinese Academy of Sciences) ; China Scholarship Council(China Scholarship Council) ; Shandong Province Taishan Scholarship ; Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; State Science and Technology Supporting Project Eco-agriculture Technological Engineering ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC))
作品OA属性	Green Accepted, Green Published, hybrid, Green Submitted
引用统计	被引频次：24[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/2S10CLM1/28135
专题	植被与环境变化国家重点实验室
作者单位	1.[Biswas, D. K. 2.Xu, H. 3.Li, Y. G. 4.Jiang, G. M.] Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 5.Ma, B. L.] Agr & Agri Food Canada, Ottawa, ON K1A 0C6, Canada 6.[Jiang, G. M.] Shandong Agr Univ, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Biswas, D. K.,Xu, H.,Li, Y. G.,et al. Modification of photosynthesis and growth responses to elevated CO2 by ozone in two cultivars of winter wheat with different years of release[J]. JOURNAL OF EXPERIMENTAL BOTANY,2013,64(6):1485-1496.
APA	Biswas, D. K.,Xu, H.,Li, Y. G.,Ma, B. L.,&Jiang, G. M..(2013).Modification of photosynthesis and growth responses to elevated CO2 by ozone in two cultivars of winter wheat with different years of release.JOURNAL OF EXPERIMENTAL BOTANY,64(6),1485-1496.
MLA	Biswas, D. K.,et al."Modification of photosynthesis and growth responses to elevated CO2 by ozone in two cultivars of winter wheat with different years of release".JOURNAL OF EXPERIMENTAL BOTANY 64.6(2013):1485-1496.

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