干旱区生态环境知识资源中心(Arid): Microbial Nitrogen Cycling in Antarctic Soils

Arid

DOI	10.3390/microorganisms8091442
	Microbial Nitrogen Cycling in Antarctic Soils
	Ortiz, Max; Bosch, Jason; Coclet, Clement; Johnson, Jenny; Lebre, Pedro; Salawu-Rotimi, Adeola; Vikram, Surendra; Makhalanyane, Thulani; Cowan, Don
通讯作者	Cowan, D
来源期刊	MICROORGANISMS
EISSN	2076-2607
出版年	2020
卷号	8 期号:9
英文摘要	The Antarctic continent is widely considered to be one of the most hostile biological habitats on Earth. Despite extreme environmental conditions, the ice-free areas of the continent, which constitute some 0.44% of the total continental land area, harbour substantial and diverse communities of macro-organisms and especially microorganisms, particularly in the more hospitable maritime regions. In the more extreme non-maritime regions, exemplified by the McMurdo Dry Valleys of South Victoria Land, nutrient cycling and ecosystem servicing processes in soils are largely driven by microbial communities. Nitrogen turnover is a cornerstone of ecosystem servicing. In Antarctic continental soils, specifically those lacking macrophytes, cold-active free-living diazotrophic microorganisms, particularly Cyanobacteria, are keystone taxa. The diazotrophs are complemented by heterotrophic bacterial and archaeal taxa which show the genetic capacity to perform elements of the entire N cycle, including nitrification processes such as the anammox reaction. Here, we review the current literature on nitrogen cycling genes, taxa, processes and rates from studies of Antarctic soils. In particular, we highlight the current gaps in our knowledge of the scale and contribution of these processes in south polar soils as critical data to underpin viable predictions of how such processes may alter under the impacts of future climate change.
英文关键词	N-cycling soils Antarctic diazotrophy anammox ecosystem services bacteria archaea Cyanobacteria
类型	Review
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000580048200001
WOS关键词	AMMONIA-OXIDIZING BACTERIA ; SOUTHERN VICTORIA LAND ; MCMURDO DRY VALLEYS ; COMMUNITY STRUCTURE ; NITRITE REDUCTASE ; POLAR DESERT ; ARCHAEAL DIVERSITY ; KATABATIC WINDS ; RESPONSES ; ABUNDANCE
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326929
作者单位	[Ortiz, Max; Bosch, Jason; Coclet, Clement; Johnson, Jenny; Lebre, Pedro; Salawu-Rotimi, Adeola; Vikram, Surendra; Makhalanyane, Thulani; Cowan, Don] Univ Pretoria, Dept Biochem Genet & Microbiol, Ctr Microbial Ecol & Gen, ZA-0002 Pretoria, South Africa
推荐引用方式 GB/T 7714	Ortiz, Max,Bosch, Jason,Coclet, Clement,et al. Microbial Nitrogen Cycling in Antarctic Soils[J],2020,8(9).
APA	Ortiz, Max.,Bosch, Jason.,Coclet, Clement.,Johnson, Jenny.,Lebre, Pedro.,...&Cowan, Don.(2020).Microbial Nitrogen Cycling in Antarctic Soils.MICROORGANISMS,8(9).
MLA	Ortiz, Max,et al."Microbial Nitrogen Cycling in Antarctic Soils".MICROORGANISMS 8.9(2020).