干旱区生态环境知识资源中心(Arid): Salinity Induces Allometric Accumulation of Sulfur in Plants and Decouples Plant Nitrogen-Sulfur Correlation in Alpine and Arid Wetlands

Arid

DOI	10.1029/2022GB007372
	Salinity Induces Allometric Accumulation of Sulfur in Plants and Decouples Plant Nitrogen-Sulfur Correlation in Alpine and Arid Wetlands
	Zuo, Zhenjun; Zhao, Haocun; Yang, Lei; Lv, Tian; Li, Xiangyan; Ma, Fei; Wang, Zhong; Yu, Dan
通讯作者	Wang, Z ; Yu, D
来源期刊	GLOBAL BIOGEOCHEMICAL CYCLES
ISSN	0886-6236
EISSN	1944-9224
出版年	2022
卷号	36 期号:12
英文摘要	Salinization alters the elemental balance of wetlands and induces variations in plant survival strategies. Sulfur (S) plays vital roles in serving regulatory and catalytic functions in stress resistance of plants. Yet, how plant S and its relationships with nitrogen (N) vary across natural environmental gradients are not well documented. We collected 1,366 plant samples and 230 water and sediment samples from 230 wetlands in Tibetan Plateau and adjacent arid regions of western China, to analyze the effects of environmental variables on plant S accumulation and N-S correlations. We found that plant S correlated with N in unimodal patterns. Salinity, rather than temperature or nutrient supply, promoted disproportionate accumulation of S but limited N uptake, inducing decoupling of N-S correlation in plants. Toward high salinity, the faster increasing rates of total S than that of glutathione, the most abundant organic-S compound in plant resistance, provided potential evidences explaining the decoupled plant N-S correlation. A salinity of 3.9 was calculated to be a threshold at which substantial changes in plant N-S correlation occurred. We designed a conceptual model to illustrate the mechanisms driving variations of N-S correlation in plants and environments along salinity gradient. Furthermore, high salinity filtered out the salt-sensitive species and reassembled the communities. In conclusion, increased salinity affected wetland plants by inducing S accumulation in plants and selecting salt-tolerant species with high S concentrations at community level, providing evidences for plant adaptive mechanisms to salinity in arid regions.
英文关键词	alpine wetlands arid and semi-arid region biogeochemical cycles ecological stoichiometry functional traits Tibetan Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000924645700001
WOS关键词	AQUATIC MACROPHYTES ; SOIL ; ASSIMILATION ; VARIABILITY ; HOMEOSTASIS ; PHOSPHORUS ; PATTERNS ; TRAITS ; LONG ; SALT
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392966
推荐引用方式 GB/T 7714	Zuo, Zhenjun,Zhao, Haocun,Yang, Lei,et al. Salinity Induces Allometric Accumulation of Sulfur in Plants and Decouples Plant Nitrogen-Sulfur Correlation in Alpine and Arid Wetlands[J],2022,36(12).
APA	Zuo, Zhenjun.,Zhao, Haocun.,Yang, Lei.,Lv, Tian.,Li, Xiangyan.,...&Yu, Dan.(2022).Salinity Induces Allometric Accumulation of Sulfur in Plants and Decouples Plant Nitrogen-Sulfur Correlation in Alpine and Arid Wetlands.GLOBAL BIOGEOCHEMICAL CYCLES,36(12).
MLA	Zuo, Zhenjun,et al."Salinity Induces Allometric Accumulation of Sulfur in Plants and Decouples Plant Nitrogen-Sulfur Correlation in Alpine and Arid Wetlands".GLOBAL BIOGEOCHEMICAL CYCLES 36.12(2022).