...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Epsilonproteobacteria as gill epibionts of the hydrothermal vent gastropod Cyathermia naticoides (North East-Pacific Rise)
【24h】

Epsilonproteobacteria as gill epibionts of the hydrothermal vent gastropod Cyathermia naticoides (North East-Pacific Rise)

机译：Epsilon变形细菌作为热液腹足纲腹足类Cyathermia naticoides的East表皮生物（东北太平洋上升）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mollusks, and particularly gastropods, are one of the major taxonomic groups at vents. In these ecosystems, devoid of light, chemoautotrophic bacteria are at the base of the food web and symbiotic association between metazoa and these bacteria is numerous. Nevertheless, apart few "large-size" well-known species, the "small-size" gastropods (shell ＜5 mm), although very abundant, remain poorly studied regarding symbioses. We investigated here Cyathermia naticoides (Waren and Bouchet in Zool Scr 18(1), 1989), a small coiled gastropod found in abundance on the East Pacific Rise among Riftia pachyptila tubes, and usually inferred to graze on tubeworm bacterial cover, and/or filter feeding. Among mollusks, symbioses are well known in large species and almost exclusively rely on sulfide or methane-oxidizing proteobacterial endosymbi-onts, occurring within the host tissues in gill epithelial bac-teriocytes. Combining several approaches (molecular biology, microscopy, stable isotopes analyses), we described here an unusual symbiosis, where autotrophic filamentous Epsilonproteobacteria are located extracellularly, at the base of host gill filaments. Numerous endocytotic lyso-some-like structures were observed in the gill epithelium of the animal suggesting bacteria may contribute to its nutrition through intracellular digestion by gill cells. Additional food source by non-symbiotic proteobacteria grazed on R. pachyptila tubes could complete the diet. The possible role of temperature in the selection of Epsilon- vs Gammapro-teobacterial partners is discussed.
机译：软体动物，尤其是腹足类动物，是通风口的主要分类群之一。在这些生态系统中，缺乏光化学自养细菌是食物网的基础，后生动物与这些细菌之间的共生联系很多。然而，除了少数“大尺寸”著名物种外，“小尺寸”腹足动物（壳＜5 mm）虽然非常丰富，但在共生方面却研究不足。我们在这里调查了Cyathermia naticoides（Waren和Bouchet在Zool Scr 18（1），1989年）中发现的一种小盘状腹足纲动物，在东太平洋上升带的裂谷pachyptila管中大量发现，通常推断是在结核虫的细菌覆盖下吃草，和/或过滤器加料。在软体动物中，共生酶在大物种中是众所周知的，并且几乎完全依赖于g或上皮性细菌在宿主组织内的硫化物或甲烷氧化性细菌内共生。结合几种方法（分子生物学，显微镜检查，稳定的同位素分析），我们在这里描述了一种不寻常的共生关系，自养丝状Epsilon变形杆菌位于细胞外，位于宿主g丝的基部。在动物的ill上皮中观察到许多内吞性溶酶体样结构，这表明细菌可能通过cellular细胞的细胞内消化来促进其营养。放牧在R. pachyptila管上的非共生蛋白杆菌的其他食物来源可以完成饮食。讨论了温度在选择Epsilon-Gammapro-细菌伴侣时的可能作用。

著录项

  • 来源
    《Marine biology》 |2015年第2期|435-448|共14页
  • 作者

    Magali Zbinden; Lise Marque; Sylvie Marylene Gaudron; Juliette Ravaux; Nelly Leger; Sebastien Duperron;

  • 作者单位

    Sorbonne Universites, UMR7208 MNHN CNRS UPMC IRD Biologie des Organismes Aquatiques et Ecosystemes, Equipe Adaptation aux Milieux Extremes, Universite Pierre et Marie Curie Paris 06, 7 Quai St Bernard, 75252 Paris Cedex 05, France;

    Sorbonne Universites, UMR7208 MNHN CNRS UPMC IRD Biologie des Organismes Aquatiques et Ecosystemes, Equipe Adaptation aux Milieux Extremes, Universite Pierre et Marie Curie Paris 06, 7 Quai St Bernard, 75252 Paris Cedex 05, France;

    Sorbonne Universites, UMR7208 MNHN CNRS UPMC IRD Biologie des Organismes Aquatiques et Ecosystemes, Equipe Adaptation aux Milieux Extremes, Universite Pierre et Marie Curie Paris 06, 7 Quai St Bernard, 75252 Paris Cedex 05, France,UMR8187 Laboratoire d'Oceanologie et de Geosciences (UL1 CNRS ULCO), Station marine de Wimereux, 28 Avenue Foch, 62930 Wimereux, France;

    Sorbonne Universites, UMR7208 MNHN CNRS UPMC IRD Biologie des Organismes Aquatiques et Ecosystemes, Equipe Adaptation aux Milieux Extremes, Universite Pierre et Marie Curie Paris 06, 7 Quai St Bernard, 75252 Paris Cedex 05, France;

    Sorbonne Universites, UMR7208 MNHN CNRS UPMC IRD Biologie des Organismes Aquatiques et Ecosystemes, Equipe Adaptation aux Milieux Extremes, Universite Pierre et Marie Curie Paris 06, 7 Quai St Bernard, 75252 Paris Cedex 05, France;

    Sorbonne Universites, UMR7208 MNHN CNRS UPMC IRD Biologie des Organismes Aquatiques et Ecosystemes, Equipe Adaptation aux Milieux Extremes, Universite Pierre et Marie Curie Paris 06, 7 Quai St Bernard, 75252 Paris Cedex 05, France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号