The coupling effects of water deficit and nitrogen supply on photosynthesis, WUE, and stable isotope composition in Picea asperata

doi:10.12705/666.18

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	The coupling effects of water deficit and nitrogen supply on photosynthesis, WUE, and stable isotope composition in Picea asperata
	Tang, Bo 1,2; Yin, Chunying ; Yang, Huan 1; Sun, Yuyu 1; Liu, Qing
刊名	ACTA PHYSIOLOGIAE PLANTARUM
	2017
卷号	39 期号:7
关键词	Leaf gas exchange Stable isotope composition Water use efficiency Stomatal conductance
ISSN号	0137-5881
DOI	10.12705/666.18
文献子类	Article
英文摘要	Water stress and nitrogen (N) availability are the two main factors limiting plant growth, and the two constrains can interact in intricate ways. Moreover, atmospheric N depositions are altering the availability of these limiting factors in many terrestrial ecosystems. Here, we studied the combined effects of different soil water availability and N supply on photosynthesis and water-use efficiency (WUE) in Picea asperata seedlings cultured in pots, using gas exchange, and stable carbon and nitrogen isotope composition (delta C-13 and delta N-15). Photosynthesis under light saturation (A(sat)) and stomatal conductance (g(s)) of P. asperata decreased as the soil moisture gradually diminished. Under severe water-stress condition, N addition decreased the Asat and gs, whereas the positive effects were observed in moderate water-stress and well-watered conditions. The effect of N addition on the intrinsic WUE (WUEi) deduced from gas exchange was associated with soil water availability, whereas long-term WUE evaluated by leaf delta C-13 only affected by soil water availability, and it would be elevated with soil moisture gradually diminished. Water deficit would restrict the uptake and further transport of N to the aboveground parts of P. asperata, and then increasing delta N-15. Therefore, delta N-15 in plant tissues may reflect changes in N allocation within plants. These results indicate that the effect of N enrichment on photosynthesis in P. asperata is largely, if not entirely, dependent on the severity of water stress, and P. asperata would be more sensitive to increasing N enrichment under low soil water availability than under high soil moisture.
学科主题	Plant Sciences ; Evolutionary Biology
电子版国际标准刊号	1861-1664
出版地	HEIDELBERG
WOS关键词	GAS-EXCHANGE ; USE EFFICIENCY ; DURUM-WHEAT ; CLIMATE-CHANGE ; QUERCUS-SUBER ; CARBON ; DISCRIMINATION ; DROUGHT ; DELTA-C-13 ; RESPONSES
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000418791300018
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370495, 31070533]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22323]
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.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Biodivers Conservat Key Lab Sichuan Prov, POB 416, Chengdu 610041, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tang, Bo,Yin, Chunying,Yang, Huan,et al. The coupling effects of water deficit and nitrogen supply on photosynthesis, WUE, and stable isotope composition in Picea asperata[J]. ACTA PHYSIOLOGIAE PLANTARUM,2017,39(7).
APA	Tang, Bo,Yin, Chunying,Yang, Huan,Sun, Yuyu,&Liu, Qing.(2017).The coupling effects of water deficit and nitrogen supply on photosynthesis, WUE, and stable isotope composition in Picea asperata.ACTA PHYSIOLOGIAE PLANTARUM,39(7).
MLA	Tang, Bo,et al."The coupling effects of water deficit and nitrogen supply on photosynthesis, WUE, and stable isotope composition in Picea asperata".ACTA PHYSIOLOGIAE PLANTARUM 39.7(2017).