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MGII古菌在中国近海和河口的空间分布特征
The spatial patterning of Marine Group II archaea in Chinese coastal and esturine waters

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赖登训 1   谢伟 1,2   范陆 1   陶建昌 3   胡安谊 4   王鹏 3   朱元清 1   张传伦 1 *  
文摘 MGII古菌是浅层海洋水体中丰度较高的异养微生物类群之一,在海洋有机质代谢中具有不可忽视的作用。研究表明MGII古菌在边缘海比远海环境具有更高的丰度和代谢活性。然而,我们对于MGII古菌在边缘海的分布特征仍知之甚少。本研究对中国四个区域(从南到北依次为珠江口、九龙江口、东海和胶州湾)表层水体的MGII种群结构进行了研究,分析了MGII古菌在这些区域中生境内、生境间的多样性,MGII OTUs分布情况以及进化关系。结果表明:MGII古菌在珠江口的多样性最高,东海和九龙江口次之,胶州湾最低。同时,珠江口MGII的均匀性指标最高,暗示其较为稳定的MGII群落结构。此外,珠江口的MGII的多样性与其他区域具有显著差异。进化树分析发现珠江口的MGII类群包含四个亚组,分布最为广泛,并且与其他区域有着明显的区分,而九龙江口、东海和胶州湾的分布相对紧凑,相互之间的MGII类群有交叉。研究珠江口MGII生态功能的特异性有助于进一步理解MGII古菌在全球边缘海的分布特征及其生态功能。
其他语种文摘 MGII that belonging to Euryarchaeota,are among the most abundant heterotrophic microorganisms in surface ocean and are important players in the degradation of organic matter.Research so far has shown that the distribution of MGII could be affected by various parameters such as seasonality,temperature and salinity.They were known to have higher metabolic activity in coastal and estuarine regions than the open ocean.However,the patterning of MGII distribution in the ocean and their ecological functions are unclear.Here,we performed sequencing analysis using samples from four different regions including Pearl River Estuary (PRE),Jiulong River Estuary (JRE),East China Sea (ECS),and Jiaozhou Bay (JZB).Results of Miseq sequencing indicate that the MGII have different distributional patterns and community compositions in various areas.Diversity analyses show that the faith'PD and Pielou'evenness of MGII in PRE are significantly different from those in other areas,indicating regional specificity of MGII community in Chinese coasts and estuaries.Phylogenetic analyses show that MGII OTUs from the PRE represent a unique group,whereas MGII OTUs in other areas have considerable overlaps.This study provides an integrated view of MGII's distributional patterns in Chinese coastal and estuarine waters which may contribute to a better understanding of MGII's potential ecological functions in the Pearl River Estuary.
来源 中国科学基金 ,2018,32(5):459-470 【扩展库】
关键词 MGII ; 古菌 ; 近海与河口 ; 生物多样性 ; 碳循环 ; 生物地球化学
地址

1. 南方科技大学, 深圳海洋地球古菌组学重点实验室, 深圳, 518055  

2. 中山大学海洋科学学院, 珠海, 51908242  

3. 同济大学, 海洋地质国家重点实验室, 上海, 200092  

4. 中国科学院城市环境研究所, 厦门, 361021

语种 中文
文献类型 研究性论文
ISSN 1000-8217
学科 微生物学
基金 国家自然科学基金 ;  国家科技部项目 ;  同济跨学科项目
文献收藏号 CSCD:6339649

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引证文献 2 篇

1 刘浩东 海洋浮游古菌mgii的研究进展 微生物学报,2020,60(9):1834-1851
CSCD被引 2 次

2 闫慧贞 环梅山岛海域春季浮游古菌群落空间分布特征研究 微生物学报,2021,61(9):2709-2725
CSCD被引 3 次

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