干旱区生态环境知识资源中心(Arid): Physiological response of moss/cyanobacteria crusts along a precipitation gradient from semi-arid to arid desert in China

Arid

DOI	10.1007/s11104-021-05117-2
	Physiological response of moss/cyanobacteria crusts along a precipitation gradient from semi-arid to arid desert in China
	Hui, Rong; Li, Xinrong; Zhao, Ruiming; Tan, Huijuan; Jia, Rongliang
通讯作者	Hui, R (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Donggang West Rd 320, Lanzhou 730000, Gansu, Peoples R China.
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2021
英文摘要	Aims Desert regions are regarded as highly sensitive to climatic changes. In arid and semi-arid desert, photosynthetic organisms from biological soil crusts are poikilohydric and sensitive to fluctuations in precipitation. How do physiological properties such as concentration of biochemical constituents and enzymes respond to a precipitation gradient from semi-arid to arid desert regions? Methods We sampled cyanobacteria and moss crusts from four desert regions with distinctly different amounts of annual rainfall. Subsequently, the contents of photosynthetic pigments, malondialdehyde (MDA), osmotic adjustment substances, and antioxidative enzyme activities were correlated with the means of annual precipitation, evaporation, and temperature at the various sites. Results Crust type, precipitation level, and their interaction had significant influences on many physiological properties (photosynthetic pigments, proline, soluble sugar, and superoxide dismutase). The contents of soluble protein, proline, and soluble sugar of cyanobacteria/moss crusts decreased with increasing precipitation level. Superoxide dismutase and catalase activities of cyanobacteria crusts decreased significantly with increasing annual precipitation. No significant variations in MDA were observed between different precipitation regions in the two crusts. Conclusions Among the environmental variables tested, the annual amount of precipitation had the strongest effect on the physiological properties of moss/cyanobacteria crusts in different regions. Crust type combined with particular precipitation level influenced the physiological properties of crusts. Moreover, both moss and cyanobacteria crusts exhibited strong physiological adaptability to changes in precipitation. This result needs to be incorporated into future ecological models, which will help in understanding the function and vulnerability of biocrusts in the face of climate change.
英文关键词	Cyanobacteria crust Moss crust Osmotic adjustment substances Photosynthetic pigment Precipitation gradient Water availability
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687897400003
WOS关键词	BIOLOGICAL SOIL CRUSTS ; TENGGER DESERT ; GURBANTUNGGUT DESERT ; ANTIOXIDANT ENZYMES ; DESICCATION-TOLERANCE ; DISTRIBUTION PATTERNS ; SPATIAL-DISTRIBUTION ; SUCCESSIONAL STAGES ; MICROBIOTIC CRUSTS ; OXIDATIVE DAMAGE
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364330
作者单位	[Hui, Rong; Li, Xinrong; Tan, Huijuan; Jia, Rongliang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Donggang West Rd 320, Lanzhou 730000, Gansu, Peoples R China; [Zhao, Ruiming] Gansu Agr Univ, Coll Agron, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Hui, Rong,Li, Xinrong,Zhao, Ruiming,et al. Physiological response of moss/cyanobacteria crusts along a precipitation gradient from semi-arid to arid desert in China[J],2021.
APA	Hui, Rong,Li, Xinrong,Zhao, Ruiming,Tan, Huijuan,&Jia, Rongliang.(2021).Physiological response of moss/cyanobacteria crusts along a precipitation gradient from semi-arid to arid desert in China.PLANT AND SOIL.
MLA	Hui, Rong,et al."Physiological response of moss/cyanobacteria crusts along a precipitation gradient from semi-arid to arid desert in China".PLANT AND SOIL (2021).