干旱区生态环境知识资源中心(Arid): Resorptions of 10 mineral elements in leaves of desert shrubs and their contrasting responses to aridity

Arid

DOI	10.1093/jpe/rty034
	Resorptions of 10 mineral elements in leaves of desert shrubs and their contrasting responses to aridity
	Zhang, Meixia 1; Luo, Yan 2,3; Yan, Zhengbing 4; Chen, Jiao 1; Eziz, Anwar 4; Li, Kaihui 2,3; Han, Wenxuan 1
通讯作者	Han, Wenxuan
来源期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
EISSN	1752-993X
出版年	2019
卷号	12 期号:2 页码:358-366
英文摘要	Aims We aim to investigate variations in the resorption efficiencies of 10 mineral nutrients [i.e. nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), manganese (Mn), zinc (Zn), aluminum (Al), iron (Fe) and copper (Cu)] in leaves of desert shrubs and to explore effects of aridity on resorption efficiency of these nutrients. Methods Plant samples were collected from 10 sites in northern Xinjiang Uygur Autonomous Region of China. Samples of green and senesced leaves were analysed to determine concentrations of N, P, K, Mg, Ca, Mn, Zn, Al, Fe and Cu and thus the nutrient resorption efficiency. Important Findings The mean nutrient concentrations in the desert shrubs varied, with the stoichiometric ratio Ca:N (19.3 mg g(-1)):K (10.5 mg g(-1)):Mg:P (1.01 mg g(-1)):Al:Fe:Mn:Zn:Cu (4.78 mg kg(-1)) = 4038:2950:2199:1816:211:37:32:11:2:1 in green leaves; and Ca:N (12.6 mg g(-1)):Mg:K (7.6 mg g(-1)):P (0.56 mg g(-1)):Fe:Al:Mn:Zn:Cu (2.85 mg kg(-1)) = 5583:3710:2943:2523:178:133:119:19:3.7:1 in senesced leaves. Resorption generally occurred for six elements (N, P, K, Cu, Mg and Mn, with average resorption efficiency 47.8%, 52.0%, 38.6%, 41.0%, 12.7% and 7.89%, respectively) during leaf senescence, while the other four nutrients tended to accumulate in senesced leaves, showing averagely negative resorption efficiencies [Ca (-3.87%), Al (-57.1%), Zn (-62.6%), Fe (-89.6%)]. Aridity showed strikingly different effects on the resorption process of the 10 nutrients. Of the four elements with totally (N/P/K) or mostly (Cu) positive observations of resorption efficiency, their resorption generally decreased with aridity, suggesting that drought stress had negative effects on the resorption efficiencies of these elements. In contrast, with at least one-third observations of resorption efficiency being negative, the other elements (Mg/Mn/Ca/Zn/Al/Fe) showed generally increasing resorptive tendency with aridity, except for Zn. This research provided a systematic analysis on the large variation and contrasting responses of the resorption of multi-elements to aridity in typical desert shrubs. Our findings foster the understanding of nutrient resorption patterns of desert plants and enable us to better predict the contrastive effects of drought stress on the cycling of diverse nutrients and the consequent stoichiometric decoupling in plants of desert ecosystems.
英文关键词	arid region desert shrubs drought stress mineral elements nutrient resorption stoichiometric decoupling
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000461146600017
WOS关键词	NUTRIENT RESORPTION ; ABSCISIC-ACID ; HYDRAULIC CONDUCTIVITY ; DROUGHT STRESS ; CLIMATE-CHANGE ; NITROGEN RESORPTION ; LEAF SENESCENCE ; GROWTH-RATE ; EFFICIENCY ; PATTERNS
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
来源机构	中国科学院新疆生态与地理研究所 ; 中国农业大学 ; 北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217276
作者单位	1.China Agr Univ, Dept Ecol & Ecol Engn, Coll Resources & Environm Sci, 2 West Yuanmingyuan Rd, Beijing 100193, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 3.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China; 4.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Meixia,Luo, Yan,Yan, Zhengbing,et al. Resorptions of 10 mineral elements in leaves of desert shrubs and their contrasting responses to aridity[J]. 中国科学院新疆生态与地理研究所, 中国农业大学, 北京大学,2019,12(2):358-366.
APA	Zhang, Meixia.,Luo, Yan.,Yan, Zhengbing.,Chen, Jiao.,Eziz, Anwar.,...&Han, Wenxuan.(2019).Resorptions of 10 mineral elements in leaves of desert shrubs and their contrasting responses to aridity.JOURNAL OF PLANT ECOLOGY,12(2),358-366.
MLA	Zhang, Meixia,et al."Resorptions of 10 mineral elements in leaves of desert shrubs and their contrasting responses to aridity".JOURNAL OF PLANT ECOLOGY 12.2(2019):358-366.