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珠穆朗玛峰北坡6000m以上主要生境细菌群落特征
Authors
刘勇勤
姚檀栋
+5 more
康世昌
曾永辉
焦念志
骆庭伟
黄思军
Publication date
15 July 2007
Publisher
Abstract
流式细胞技术及构建的细菌16S rRNA基因文库揭示了珠穆朗玛峰北坡6600~8000m表层雪中细菌的数量,以及6000m冰塔林、6350m冰川融水和6600m表层雪中细菌的群落特征.珠峰北坡表层雪中细菌数量高于南极地区,但与其他高山雪中相似.表层雪中细菌的数量有随海拔升高而增多的趋势,但与离子的浓度相关性不太.珠峰北坡冰冻环境中的细菌16S rRNA序列与土壤、湖泊和河流、动植物体及其他冷冻环境中细菌的相似.冰塔林、冰川融水和表层雪中细菌具不同的群落特征,Cytophaga-Flavobacterium-Bacteroides(CFB)类群细菌在冰川融水中占绝对优势,冰塔林中属于β-Proteobacteria和CFB类的细菌为优势种,而表层雪中细菌则以β-Proteobacteria和Actinobacteria类的细菌为主,不同生境中细菌群落的不同可能是由于细菌的沉积后变化引起.国家重点基础研究发展计划项目(批准号:2005CB422004);; 国家自然科学基金项目(批准号:40121101,40401054);; 中国科学院创新项目(批准号:KZCX3-SW-339);; “百人计划”项目及国际社会公益项目(批准号:2005DIA3J106
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Last time updated on 10/06/2020