State Key Laboratory of Marine Geology, Tongji University, Shanghai, People's Republic of China.
Microb Ecol. 2010 Nov;60(4):796-806. doi: 10.1007/s00248-010-9746-y. Epub 2010 Oct 1.
Using the archaeal 16S rRNA gene, we determined the community structures of archaea of subseafloor sediments (∼9-11 m below seafloor) from two geographically distant cores (MD05-2896, south, water depth 1,657 m; MD05-2902, north, water depth 3,697 m) in the South China Sea. Euryarchaeota accounted for 61.4% of total archaeal clone libraries at MD05-2896 and 56.2% at MD05-2902. At both locations, the Euryarchaeota-related sequences were dominated by Marine Benthic Group D, Terrestrial Miscellaneous Eryarchaeotal Group, and South African GoldMine Euryarchaeotal Group; the Crenarchaeota-related sequences were dominated by Marine Benthic Group B, Marine Group I, pSL12, and C3. The community structure showed no significant difference with depth at each location, suggesting the lack of stratification of archaeal populations in the deep-sea marine sediments in the South China Sea. On the other hand, the community structure is significantly different between the two sites, which may be related to geographical difference in the South China Sea.
利用古菌 16S rRNA 基因，我们从南海两个地理位置较远的岩芯（MD05-2896，南部，水深 1657 米；MD05-2902，北部，水深 3697 米）中确定了海底沉积物（海底以下约 9-11 米）中古菌的群落结构。在 MD05-2896 和 MD05-2902 中，广古菌门分别占古菌克隆文库的 61.4%和 56.2%。在这两个地点，与广古菌门相关的序列主要由海洋底栖群 D、陆地杂类菌门、南非金矿古菌群组成；与泉古菌门相关的序列主要由海洋底栖群 B、海洋群 I、pSL12 和 C3 组成。群落结构在每个地点的深度上没有明显差异，表明南海深海海洋沉积物中古菌种群没有分层。另一方面，两个地点的群落结构存在显著差异，这可能与南海的地理位置差异有关。
