Journal Title
Title of Journal: Marine Biology
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Abbravation: Marine Biology
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Publisher
Springer-Verlag
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Authors: Peng Shao Yueqin Chen Hui Zhou Lianghu Qu Ying Ma Heyang Li Nianzhi Jiao
Publish Date: 2004/08/17
Volume: 146, Issue: 1, Pages: 133-142
Abstract
The structure and diversity of the Archaea collected from prawn farm sediment were investigated for the first time A partial 16S ribosomal DNA library was constructed with Archaeaspecific primers Subsequently 80 randomly selected archaeal clones from the library were analyzed by restriction fragment length polymorphism RFLP and resulted in 50 different RFLP patterns Sequence analysis of representatives from each unique RFLP type revealed high diversity in the archaeal populations and the majority of archaeal clones were either members of novel lineages or most closely related to uncultured clones In the phylogenetic analysis the archaeal clones could be grouped into discrete phylogenetic lineages within the two kingdoms Crenarchaeota and Euryarchaeota Euryarchaeota dominated in our archaeal library with up to 722 of the total clones and Crenarchaeota represented 278 Of all the Euryarchaeota clones three clones 56 were affiliated with Methanosarcinales four clones 74 were related to Methanomicrobiales three clones 56 were related to Halobacterium with 93 similarity and the remaining clones 815 were related to those uncultured Euryarchaeota in the aquatic sediment ecosystem None of the crenarchaeal clones were associated with any known cultured lineages The selective dispersal of the archaeal population indicates that their ecological niches are associated with environmental characteristics Novel phylotypes of Archaea would expand our understanding of the genetic diversity of Archaea in aquatic sediment systems and would be significant in the phylogenetic study of ArchaeaThis study was supported by NSFC projects no 40176037 40232021 and the Red Tide Key Project of the National Natural Science Foundation of Guangdong province China no 011208 The experiments comply with current laws of the country in which the experiments were performed
Keywords:
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