干旱区生态环境知识资源中心(Arid): Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria

Arid

DOI	10.1007/s13157-023-01757-5
	Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria
	Zouggar, Aicha Mehirou; Mirleau, Pascal; Chenuil, Anne; Denis, Francoise; Caruso, Aurore; Ayad, Sidi Mohammed El Amine Abi; Lamara, Sid Ahmed Chawki
通讯作者	Mirleau, P
来源期刊	WETLANDS
ISSN	0277-5212
EISSN	1943-6246
出版年	2023
卷号	43 期号:8
英文摘要	Wetlands concentrate biodiversity, particularly in arid regions. Chott Ech Chergui (Algeria), one of the biggest wetlands of the north African desert, presents extreme temperatures and salinity conditions. We initiated a physico-chemical and microbiological survey at seven sites encompassing various conditions (salt lakes, freshwater lakes and hot springs), through a one-year monthly sampling campaign. Four sites under the influence of the spring showed little temporal physio-chemical variation. Three sites displayed higher variation and the aridity level, high from late spring until autumn, was a strong predictor of water chemistry. We evidenced extremophile bacteria. Among 320 bacterial isolates tested for thermo-, acido- and alcalino- tolerance, 39, affiliated to Firmicutes and Proteobacteria, were successfully maintained and underwent physiological, biochemical and molecular characterizations. Thermotolerance was recorded up to 100 degrees C for a water isolate affiliated to Geobacillus stearothermophilus. Halotolerance was recorded up to 30% NaCl (w:v) for soil isolates affiliated to Salinicola zeshunii, Chromohalobacter beijerinckii and Virgibacillus halodenitrificans. Acido- and alcalo- tolerance were recorded for a pH range from 5 to 11 for several soil and water isolates affiliated to Exiguobacterium, Bacillus, Salinicola and Chromohalobacter genus. Our results comfort the interest of studying extremophile diversity in wetlands of the highly arid Sahara region.
英文关键词	16S rDNA Aridity Conservation value Extremophile bacteria Sahara
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:001112448400001
WOS关键词	HOT-SPRINGS ; DIVERSITY ; LAKES ; ARCHAEA ; SALINE
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/399184
推荐引用方式 GB/T 7714	Zouggar, Aicha Mehirou,Mirleau, Pascal,Chenuil, Anne,et al. Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria[J],2023,43(8).
APA	Zouggar, Aicha Mehirou.,Mirleau, Pascal.,Chenuil, Anne.,Denis, Francoise.,Caruso, Aurore.,...&Lamara, Sid Ahmed Chawki.(2023).Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria.WETLANDS,43(8).
MLA	Zouggar, Aicha Mehirou,et al."Extreme and Heterogeneous Conditions of the Desert Wetland Chott Ech Chergui (Algeria) Allow Isolating Halophilic, Alkalophilic and Thermophilic Bacteria".WETLANDS 43.8(2023).