The coral ecosphere: A unique coral reef habitat that fosters coral-microbial interactions
The coral ecosphere: A unique coral reef habitat that fosters coral-microbial interactions
复制标题
珊瑚生态圈：促进珊瑚与微生物相互作用的独特珊瑚礁栖息地
DOI：
10.1002/lno.11190
复制
发表时间：
2019
影响因子：
4.5
通讯作者：
Apprill, Amy
中科院分区：
文献类型：
--
作者：
Weber, Laura;Gonzalez-Díaz, Patricia;Armenteros, Maickel;Apprill, Amy
硬珊瑚沐浴在浮游微生物和粒子相关微生物的海洋中。珊瑚的代谢产物影响微生物的生长和组成，但珊瑚和海水微生物之间的相互作用尚未得到充分研究。我们进行了一项基于实地的调查，以比较在五种珊瑚物种附近收集的小体积海水样品中微生物的生物量，多样性，组成和功能能力，以及在相同珊瑚礁上距离珊瑚礁基底> 1 m处收集的海水。在珊瑚附近收集的海水通常含有共生型细菌，其细菌和古细菌的组成受到珊瑚物种以及当地珊瑚礁环境的影响。微型浮游生物丰度的趋势是可变的，要么增加或减少远离珊瑚群落的珊瑚物种和微型浮游生物功能组。与珊瑚礁海水相比，表面附着和潜在毒性微生物生活方式的基因特征在近珊瑚海水中富集。有一个显着的coralPorites astreoides和珊瑚共生Endozoicomonas之间的关联，这表明招聘和/或脱落这些细胞到周围的海水。这一证据扩展了我们对潜在物种特异性和珊瑚礁影响的微生物相互作用的理解，这些相互作用发生在我们提议称为“珊瑚生态圈”的近珊瑚海水环境中的珊瑚和微生物之间。珊瑚生态圈内发生的微生物相互作用可能会影响珊瑚相关微生物的招募，并促进珊瑚代谢物转移到微生物食物网中，从而促进珊瑚礁生物地球化学循环以及珊瑚与水柱之间的联系。
Scleractinian corals are bathed in a sea of planktonic and particle‐associated microorganisms. The metabolic products of corals influence the growth and composition of microorganisms, but interactions between corals and seawater microorganisms are underexplored. We conducted a field‐based survey to compare the biomass, diversity, composition, and functional capacity of microorganisms in small‐volume seawater samples collected adjacent to five coral species with seawater collected > 1 m away from the reef substrate on the same reefs. Seawater collected close to corals generally harbored copiotrophic‐type bacteria and its bacterial and archaeal composition was influenced by coral species as well as the local reef environment. Trends in picoplankton abundances were variable and either increased or decreased away from coral colonies based on coral species and picoplankton functional group. Genes characteristic of surface‐attached and potentially virulent microbial lifestyles were enriched in near‐coral seawater compared to reef seawater. There was a prominent association between the coralPorites astreoidesand the coral symbiontEndozoicomonas, suggesting recruitment and/or shedding of these cells into the surrounding seawater. This evidence extends our understanding of potential species‐specific and reef site‐influenced microbial interactions that occur between corals and microorganisms within this near‐coral seawater environment that we propose to call the “coral ecosphere.” Microbial interactions that occur within the coral ecosphere could influence recruitment of coral‐associated microorganisms and facilitate the transfer of coral metabolites into the microbial food web, thus fostering reef biogeochemical cycling and a linkage between corals and the water column.