干旱区生态环境知识资源中心(Arid): Nitrogen application mitigates drought-induced metabolic changes in Alhagi sparsifolia seedlings by regulating nutrient and biomass allocation patterns

Arid

DOI	10.1016/j.plaphy.2020.08.036
	Nitrogen application mitigates drought-induced metabolic changes in Alhagi sparsifolia seedlings by regulating nutrient and biomass allocation patterns
	Zhang, Zhihao; Tariq, Akash; Zeng, Fanjiang; Graciano, Corina; Zhang, Bo
通讯作者	Zeng, FJ
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN	0981-9428
出版年	2020
卷号	155 页码:828-841
英文摘要	Groundwater and its associated nutrients sustain the establishment and persistence of phreatophytes. Rapid root elongation immediately after germination is vital for desert species to access deep water sources to avoid water-deficit stress. However, the growth strategy and responses to nutrients and water of young phreatophyte seedlings before their roots reach the water table are poorly understood, especially in the scenarios of nitrogen (N) deposition and drought. We investigated how simulated N deposition and drought affect the plasticity of Alhagi sparsifolia seedlings by multiple eco-physiological mechanisms. Seedlings were planted under drought-stressed or well-watered conditions and subjected to various levels of N addition (0, 3.0, 6.0, or 9.0 gN.m(-2) yr(-1)). The amounts of N and water independently or interactively affected the photosynthetic traits, drought tolerance characteristics, morphological traits, biomass allocation strategy, and nutrient distribution patterns among the plant organs. Moreover, changes mediated by N addition at the leaf level reflected the drought acclimation of the seedlings, which may be related to biomass and nutrient partitioning between organs. The roots were found to be more sensitive to variation of the N:phosphorus (P) ratio, and greater proportions of biomass, N, and P were allocated to resource-acquiring organs (i.e., leaves and fine roots) than to other tissues. A. sparsifolia adopts numerous strategies to tolerate drought, and additional N input was crucial to enhance the growth of drought-stressed A. sparsifolia, which was mainly attributable to its positive impact on the N and P uptake capacity mediated by increased biomass allocation to the mots.
英文关键词	Alhagi sparsifolia Biomass allocation Desert ecosystem N fertilization Nutrients partitioning Phreatophytes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000581918000080
WOS关键词	ROOT-GROWTH ; PLANT ; WATER ; LEAF ; DESERT ; RESPONSES ; TERRESTRIAL ; DENSITY ; MASS ; STOICHIOMETRY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327098
作者单位	[Zhang, Zhihao; Tariq, Akash; Zeng, Fanjiang; Zhang, Bo] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegeta, Urumqi 830011, Peoples R China; [Zhang, Zhihao; Tariq, Akash; Zeng, Fanjiang; Zhang, Bo] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Zhang, Zhihao; Tariq, Akash; Zeng, Fanjiang; Zhang, Bo] Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Peoples R China; [Zhang, Zhihao] Univ Chinese Acad Sci, Beijing 10049, Peoples R China; [Graciano, Corina] Univ Nacl La Plata, Inst Fisiol Vegetal, Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Zhang, Zhihao,Tariq, Akash,Zeng, Fanjiang,et al. Nitrogen application mitigates drought-induced metabolic changes in Alhagi sparsifolia seedlings by regulating nutrient and biomass allocation patterns[J]. 中国科学院新疆生态与地理研究所,2020,155:828-841.
APA	Zhang, Zhihao,Tariq, Akash,Zeng, Fanjiang,Graciano, Corina,&Zhang, Bo.(2020).Nitrogen application mitigates drought-induced metabolic changes in Alhagi sparsifolia seedlings by regulating nutrient and biomass allocation patterns.PLANT PHYSIOLOGY AND BIOCHEMISTRY,155,828-841.
MLA	Zhang, Zhihao,et al."Nitrogen application mitigates drought-induced metabolic changes in Alhagi sparsifolia seedlings by regulating nutrient and biomass allocation patterns".PLANT PHYSIOLOGY AND BIOCHEMISTRY 155(2020):828-841.