Nutrient supply has greater influence than sink strength on photosynthetic adaptation to CO2 elevation in white birch seedlings

doi:10.1016/j.plantsci.2012.12.010

	Nutrient supply has greater influence than sink strength on photosynthetic adaptation to CO2 elevation in white birch seedlings
	Zhang, Shouren 1; Dang, Qing-Lai ; Cao, Bing 2
	2013
发表期刊	PLANT SCIENCE
ISSN	0168-9452
卷号	203 页码:55-62
摘要	To study the effects of source sink ratio and nutrient supply on photosynthetic acclimation to CO2 elevation, we subjected white birch seedlings to two levels of nutrient supply (high vs. low) and CO2 concentrations (ambient vs. doubled [CO2]) for two months and then shaded the lower canopy on half of the seedlings to reduce source/sink ratio for an additional month. The CO2 elevation significantly increased P-n and IWUE at both nutrient levels but the increase was greater in the high than low nutrient treatment. The CO2 elevation resulted in a down-regulation of V-cmax in the low nutrient treatment but up-regulation of J(max), TPU, (F'(m) - F)/F'(m) and J(c) in the high nutrient after 3 months of treatment. Both the CO2 elevation and high nutrient supply increased the partition of total electron transport to carboxylation at the expense of oxidation. The seedlings responded to the shading of the lower canopy by reducing biomass allocation to roots rather than making physiological adjustments to unshaded leaves in the upper canopy. Our results suggest that the direction of photosynthetic acclimation to CO2 elevation in white birch was nutrient-dependent and an increase in sink strength could reduce the feedback inhibition of photosynthesis. (c) 2012 Elsevier Ireland Ltd. All rights reserved.
关键词	Photosynthetic up-regulation Foliar gas exchange In vivo carboxylation Chlorophyll fluorescence
学科领域	Biochemistry & Molecular Biology ; Plant Sciences
DOI	10.1016/j.plantsci.2012.12.010
收录类别	SCI
语种	英语
WOS关键词	CARBON-DIOXIDE ; NITROGEN NUTRITION ; GROWTH EFFICIENCY ; FAGUS-SYLVATICA ; DOWN-REGULATION ; LEAF NITROGEN ; GAS-EXCHANGE ; PINUS-TAEDA ; ENRICHMENT ; ACCLIMATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000315831400007
出版者	ELSEVIER IRELAND LTD
文献子类	Article
出版地	CLARE
EISSN	1873-2259
资助机构	NSERC(Natural Sciences and Engineering Research Council of Canada (NSERC)) ; Canada Foundation for Innovation(Canada Foundation for InnovationCGIAR) ; Ontario Innovation Trust
引用统计	被引频次：5[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/2S10CLM1/27970
专题	植被与环境变化国家重点实验室
作者单位	1.Lakehead Univ, Fac Nat Resources Management, Thunder Bay, ON P7B 5E1, Canada 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Ningxia Univ, Sch Agr, Dept Hort & Forestry, Yinchuan 750021, Ningxia, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shouren,Dang, Qing-Lai,Cao, Bing. Nutrient supply has greater influence than sink strength on photosynthetic adaptation to CO2 elevation in white birch seedlings[J]. PLANT SCIENCE,2013,203:55-62.
APA	Zhang, Shouren,Dang, Qing-Lai,&Cao, Bing.(2013).Nutrient supply has greater influence than sink strength on photosynthetic adaptation to CO2 elevation in white birch seedlings.PLANT SCIENCE,203,55-62.
MLA	Zhang, Shouren,et al."Nutrient supply has greater influence than sink strength on photosynthetic adaptation to CO2 elevation in white birch seedlings".PLANT SCIENCE 203(2013):55-62.

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