Sogin Emilia M, Putnam Hollie M, Nelson Craig E, Anderson Paul, Gates Ruth D
Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, Kāne'ohe, HI, USA.
Department of Oceanography and Sea Grant College Program, Center for Microbial Oceanography: Research and Education, University of Hawai'i at Mānoa, Honolulu, HI, USA.
Environ Microbiol Rep. 2017 Jun;9(3):310-315. doi: 10.1111/1758-2229.12541. Epub 2017 May 9.
Microbial symbiotic partners, such as those associated with Scleractinian corals, mediate biochemical transformations that influence host performance and survival. While evidence suggests microbial community composition partly accounts for differences in coral physiology, how these symbionts affect metabolic pathways remains underexplored. We aimed to assess functional implications of variation among coral-associated microbial partners in hospite. To this end, we characterized and compared metabolomic profiles and microbial community composition from nine reef-building coral species. These data demonstrate metabolite profiles and microbial communities are species-specific and are correlated to one another. Using Porites spp. as a case study, we present evidence that the relative abundance of different sub-clades of Symbiodinium and bacterial/archaeal families are linked to positive and negative metabolomic signatures. Our data suggest that while some microbial partners benefit the union, others are more opportunistic with potential detriment to the host. Consequently, coral partner choice likely influences cellular metabolic activities and, therefore, holobiont nutrition.
微生物共生伙伴，比如那些与石珊瑚相关的共生伙伴，介导着影响宿主性能和生存的生化转化过程。虽然有证据表明微生物群落组成部分地解释了珊瑚生理学差异，但这些共生体如何影响代谢途径仍未得到充分探索。我们旨在评估宿主体内与珊瑚相关的微生物伙伴之间的差异所产生的功能影响。为此，我们对9种造礁珊瑚物种的代谢组学特征和微生物群落组成进行了表征和比较。这些数据表明，代谢物谱和微生物群落具有物种特异性，且相互关联。以多孔珊瑚属为例，我们提供的证据表明，共生藻不同亚分支以及细菌/古菌家族的相对丰度与代谢组学的正负特征相关。我们的数据表明，虽然一些微生物伙伴对共生关系有益，但其他伙伴则更具机会主义性质，可能对宿主造成损害。因此，珊瑚对伙伴的选择可能会影响细胞代谢活动，进而影响共生体营养。
