干旱区生态环境知识资源中心(Arid): Comparative physiological responses of Microcoleus vaginatus and Bryum argenteum to enhanced UV-B radiation under field conditions

Arid

DOI	10.1071/FP18193
	Comparative physiological responses of Microcoleus vaginatus and Bryum argenteum to enhanced UV-B radiation under field conditions
	Hui, Rong; Jia, Rongliang; Zhao, Yang; Song, Guang; Gao, Yanhong
通讯作者	Hui, Rong
来源期刊	FUNCTIONAL PLANT BIOLOGY
ISSN	1445-4408
EISSN	1445-4416
出版年	2019
卷号	46 期号:3 页码:262-274
英文摘要	UV-B radiation is an important environmental factor affecting the composition and function of biological soil crusts (BSCs). The aim of this study was to compare the effects of enhanced UV-B radiation on BSCs from Tengger Desert, north-western China, which are dominated by the cyanobacterium Microcoleus vaginatus Gom. and moss Bryum argenteum Hedw. The BSCs were exposed to four UV-B supplemental treatments, including 2.75 (control), 3.08, 3.25, and 3.41Wm(-2), for 40 days under field condition. In both the studied organisms, UV-B radiation significantly affected the physiological properties (total flavonoids, soluble proteins, soluble sugars, and proline contents). While marginally enhanced UV-B radiation for a short period favoured the growth of M. vaginatus and B. argenteum, excessively high and prolonged UV-B radiation suppressed the physiological properties of the two organisms. Moreover, response index revealed that UV-B radiation had more detrimental effects on B. argenteum, suggesting that B. argenteum is more sensitive to UV-B radiation than M. vaginatus. The findings of this study could help to predict and evaluate the possible changes in the structure and function of desert ecosystems, based on the variation in physiological responses of M. vaginatus and B. argenteum to enhanced UV-B radiation.
英文关键词	biological soil crusts detrimental effects physiological properties response index sensitivity UV-B radiation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000460772700006
WOS关键词	BIOLOGICAL SOIL CRUSTS ; 2 CONTRASTING POPULATIONS ; ELEVATED ULTRAVIOLET-B ; TENGGER DESERT ; PHOTOSYNTHETIC APPARATUS ; SUCCESSIONAL STAGES ; OXIDATIVE STRESS ; TRIFOLIUM-REPENS ; GROWTH ; ULTRASTRUCTURE
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215852
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Hui, Rong,Jia, Rongliang,Zhao, Yang,et al. Comparative physiological responses of Microcoleus vaginatus and Bryum argenteum to enhanced UV-B radiation under field conditions[J],2019,46(3):262-274.
APA	Hui, Rong,Jia, Rongliang,Zhao, Yang,Song, Guang,&Gao, Yanhong.(2019).Comparative physiological responses of Microcoleus vaginatus and Bryum argenteum to enhanced UV-B radiation under field conditions.FUNCTIONAL PLANT BIOLOGY,46(3),262-274.
MLA	Hui, Rong,et al."Comparative physiological responses of Microcoleus vaginatus and Bryum argenteum to enhanced UV-B radiation under field conditions".FUNCTIONAL PLANT BIOLOGY 46.3(2019):262-274.