气候变化领域集成服务门户(CCPortal): Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China

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DOI	10.1002/jobm.201500751
	Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China
	Zhang, Bingchang; Kong, Weidong; Wu, Nan; Zhang, Yuanming
通讯作者	Zhang, YM (通讯作者)
发表日期	2016
ISSN	0233-111X
EISSN	1521-4028
起始页码	670
结束页码	679
卷号	56 期号:6
英文摘要	Biological soil crusts (BSCs) are common and play critical roles in semi-arid and arid ecosystems. Bacteria, as an important community in BSCs, play critical roles in biochemical processes. However, how bacterial diversity and community change in different successional stages of BSCs is still unknown. We used 454 pyrosequencing of 16S rRNA to investigate the bacterial composition and community, and the relationships between bacterial composition and environmental factors were also explored. In different successional stages of BSCs, the number of bacteria operational taxonomic units (OTUs) detected in each sample ranged from 2572 to 3157. Proteobacteria, Cyanobacteria, Bacteroidetes were dominant in BSCs, followed by Firmicutes, Acidobacteria, and Actinobacteria. At the successional stages of BSCs, bacterial communities, OTU composition and their relative abundance notably differentiated, and Cyanobacteria, especially Microcoleus vaginatus, dominated algal crust and lichen crust, and were the main C-fixing bacteria in BSCs. Proteobacteria and Bacteroidetes increased with the development of BSCs. OTUs related to Planomicrobium Chinese, Desulfobulbus sp., Desulfomicrobium sp., Arthrobacter sp., and Ahhaerbacter sp. showed higher relative abundance in bare sand than other successional stages of BSCs, while relative abundance of Sphingomonas sp. Niastella sp., Pedobacter, Candidatus solobacter, and Streptophyta increased with the development of BSCs. In successional stages of BSCs, bacterial OTUs composition demonstrated strong correlations with soil nutrients, soil salts, and soil enzymes. Additionally, variation of bacterial composition led to different ecological function. In bare sand, some species were related with mineral metabolism or promoting plant growth, and in algal crust and lichen crust, C-fixing bacteria increased and accumulated C to the desert soil. In later developed stage of BSCs, bacteria related with decomposition of organic matter, such as Sphingomonas sp. Niastella sp., Pedobacter, and Candidatus solobacter increased. Therefore, bacterial community composition and their key ecological roles shifted to the development of BSCs.
关键词	MICROBIAL BIOMASS COLORADO PLATEAU EXTRACELLULAR ENZYMES DISTRIBUTION PATTERNS SPATIAL-DISTRIBUTION SP NOV.CYANOBACTERIA MICROSTRUCTURE ABUNDANCE CARBON
英文关键词	Biological soil crusts; Bacterial diversity; Community; Successional process; Gurbantunggut Desert
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000378428500009
来源期刊	JOURNAL OF BASIC MICROBIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258631
推荐引用方式 GB/T 7714	Zhang, Bingchang,Kong, Weidong,Wu, Nan,et al. Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China[J]. 中国科学院青藏高原研究所,2016,56(6).
APA	Zhang, Bingchang,Kong, Weidong,Wu, Nan,&Zhang, Yuanming.(2016).Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China.JOURNAL OF BASIC MICROBIOLOGY,56(6).
MLA	Zhang, Bingchang,et al."Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China".JOURNAL OF BASIC MICROBIOLOGY 56.6(2016).