干旱区生态环境知识资源中心(Arid): Nitrogen and phosphorus resorption of desert plants with various degree of propensity to salt in response to drought and saline stress

Arid

DOI	10.1016/j.ecolind.2021.107488
	Nitrogen and phosphorus resorption of desert plants with various degree of propensity to salt in response to drought and saline stress
	Luo, Yan; Chen, Yue; Peng, Qingwen; Li, Kaihui; Mohammat, Anwar; Han, Wenxuan
通讯作者	Han, WX (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China. ; Han, WX (corresponding author), CAS Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	125
英文摘要	Nutrient resorption efficiency (NuRE), an important plant functional trait, is closely related to plant nutrient utilization and biogeochemical cycling. Under severe aridity and salinity stress, plants developed various strategies to adapt to these adverse conditions after long-term structural and functional evolution in desert ecosystems. However, the impact of arid environment on plant nutrient resorption remains uncertain for desert halophytes. Here we compared the nitrogen and phosphorus resorption efficiency (NRE and PRE) among four desert plant groups (i.e., euhalophytes, secretohalophytes, pseudohalophytes and glycophytes) and analyzed the responses of NuRE to drought and saline indicators within and across the four plant groups. Our results demonstrated that the NRE and PRE of all desert plants were averagely 52.8% and 57.1%, respectively. Pseudohalophytes had significantly higher NRE (59.9%) and glycophytes had significantly lower PRE (53.2%) than the other groups. Besides, the relative resorption efficiencies (NRE - PRE) were significantly lower than zero for euhalophytes, secretohalophytes, and overall plants, but non-significantly different from zero for pseudohalophytes and glycophytes, suggesting that euhalophytes and secretohalophytes were generally P-limited: they tend to resorb more P than N from senescing leaves; but pseudohalophytes and glycophytes were both N- and Plimited: they resorb N and P in a balanced way (the relative resorption hypothesis). NuRE of the three halophytic groups responded to drought and saline stress in a generally consistent way: both NRE and PRE significantly increased with increasing water-stress (lower soil water stress coefficient (Ksoil) and aridity index (AI)) and salinity-stress (higher soil pH and electrical conductivity (EC)), although the relationships between PRE of euhalophytes and these four indicators, and between PRE of the three halophytic groups and soil EC, were nonsignificant. By contrary, NRE of the glycophytes showed a non-significant relation with water stress indicators (Ksoil) and soil EC. Overall, the patterns of NuRE in desert plants with different salt propensity suggest the evolutionary divergence (halophytes vs glycophytes) and convergence (euhalophytes, secretohalophytes, and pseudohalophytes) strategies in response to salinity and water stress. These findings provide a new perspective for understanding the nutrient resorption strategies of desert plants, and may also help better predict the nutrients biogeochemical cycling in desert ecosystem under global climate changes.
英文关键词	Arid ecosystem Desert plants Glycophytes Halophytes Nutrient resorption Nitrogen and phosphorus stoichiometry
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000636844100003
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
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
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350001
作者单位	[Luo, Yan; Peng, Qingwen; Li, Kaihui; Mohammat, Anwar; Han, Wenxuan] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Luo, Yan; Peng, Qingwen; Li, Kaihui] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Bayinbuluk Grassland Ecosyst Res Stn, Bayinbuluk 841314, Peoples R China; [Luo, Yan; Peng, Qingwen] Univ Chinese Acad Sci, Beijing 100039, Peoples R China; [Luo, Yan; Peng, Qingwen; Li, Kaihui; Mohammat, Anwar; Han, Wenxuan] CAS Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China; [Chen, Yue] China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yan,Chen, Yue,Peng, Qingwen,et al. Nitrogen and phosphorus resorption of desert plants with various degree of propensity to salt in response to drought and saline stress[J]. 中国科学院新疆生态与地理研究所, 中国农业大学,2021,125.
APA	Luo, Yan,Chen, Yue,Peng, Qingwen,Li, Kaihui,Mohammat, Anwar,&Han, Wenxuan.(2021).Nitrogen and phosphorus resorption of desert plants with various degree of propensity to salt in response to drought and saline stress.ECOLOGICAL INDICATORS,125.
MLA	Luo, Yan,et al."Nitrogen and phosphorus resorption of desert plants with various degree of propensity to salt in response to drought and saline stress".ECOLOGICAL INDICATORS 125(2021).