气候变化领域集成服务门户(CCPortal): Physiological response of moss/cyanobacteria crusts along a precipitation gradient from semi-arid to arid desert in China

CCPortal

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 (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Donggang West Rd 320, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	0032-079X
EISSN	1573-5036
起始页码	97
结束页码	113
卷号	468 期号:1-2
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.
关键词	BIOLOGICAL SOIL CRUSTS TENGGER DESERT GURBANTUNGGUT DESERT ANTIOXIDANT ENZYMES DESICCATION-TOLERANCE DISTRIBUTION PATTERNS SPATIAL-DISTRIBUTION SUCCESSIONAL STAGES MICROBIOTIC CRUSTS OXIDATIVE DAMAGE
英文关键词	Cyanobacteria crust; Moss crust; Osmotic adjustment substances; Photosynthetic pigment; Precipitation gradient; Water availability
语种	英语
WOS研究方向	Agriculture ; Plant Sciences
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS记录号	WOS:000687897400003
来源期刊	PLANT AND SOIL
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254346
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]. 中国科学院西北生态环境资源研究院,2021,468(1-2).
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,468(1-2).
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 468.1-2(2021).