干旱区生态环境知识资源中心(Arid): Soil bacterial communities of Sahara and Gibson deserts: Physiological and taxonomical characteristics

Arid

DOI	10.3934/microbiol.2018.4.685
	Soil bacterial communities of Sahara and Gibson deserts: Physiological and taxonomical characteristics
	Belov, Andrey A.; Cheptsov, Vladimir S.; Vorobyova, Elena A.
通讯作者	Belov, AA
来源期刊	AIMS MICROBIOLOGY
ISSN	2471-1888
出版年	2018
卷号	4 期号:4 页码:685-710
英文摘要	The purpose of this research was to investigate the structure of soil bacteria communities present in the Gibson (Australia) and the Sahara (Egypt) deserts, as well as to estimate strain survivability under different environmental factors. It should be noticed that the screening of bacterial resistance to wide spectra of principally different stress conditions was performed for the first time. Experiments were conducted with culturable bacterial communities. Strains were identified using 16S rRNA sequencing, and stress-tolerance was estimated by growing strains in various nutrient media. In order to characterize the community the epifluorescent microscopy and multisubstrate testing were also performed. High bacterial abundance in the desert soils was detected, and there was seen a significant proportion of culturable cells. The close numbers of psychotropic and mesophilic bacteria in arid ecosystems were revealed. The representatives of the Actinobacteria phylum were dominant in the microbial communities, and Firmicutes, Proteobacteria, and Bacteroidetes phyla representatives were also identified. Tolerance of the axenic bacterial cultures, isolated from arid desert ecotopes, to temperature, pH, salts (KCl, NaCl, MgSO4, NaHCO3), strong oxidizers (Mg(ClO4)(2)), and antibiotics (ampicillin, cephalexin, chloramphenicol, tetracycline, doxycycline, kanamycin, rifampicin) was studied. The bacterial isolates were characterized by polyextremotolerance and by the ability to maintain metabolic activity in vitro while influenced by a wide range of physicochemical and biotic factors.
英文关键词	desert extremotolerance stress-tolerance culturable bacterial community antibiotic resistance soil
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	ESCI
WOS记录号	WOS:000456053400008
WOS关键词	16S RIBOSOMAL-RNA ; SP-NOV. ; RADIATION-RESISTANCE ; MICROBIAL DIVERSITY ; TOLERANT BACTERIA ; OXIDATIVE STRESS ; LOW-TEMPERATURE ; ATACAMA DESERT ; PCR PRIMERS ; GROWTH
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/2XILL650/333227
作者单位	[Belov, Andrey A.; Cheptsov, Vladimir S.; Vorobyova, Elena A.] Lomonosov Moscow State Univ, Soil Sci Fac, Moscow, Russia; [Cheptsov, Vladimir S.; Vorobyova, Elena A.] Russian Acad Sci, Space Res Inst, Moscow, Russia
推荐引用方式 GB/T 7714	Belov, Andrey A.,Cheptsov, Vladimir S.,Vorobyova, Elena A.. Soil bacterial communities of Sahara and Gibson deserts: Physiological and taxonomical characteristics[J],2018,4(4):685-710.
APA	Belov, Andrey A.,Cheptsov, Vladimir S.,&Vorobyova, Elena A..(2018).Soil bacterial communities of Sahara and Gibson deserts: Physiological and taxonomical characteristics.AIMS MICROBIOLOGY,4(4),685-710.
MLA	Belov, Andrey A.,et al."Soil bacterial communities of Sahara and Gibson deserts: Physiological and taxonomical characteristics".AIMS MICROBIOLOGY 4.4(2018):685-710.