Coral transplantation triggers shift in microbiome and promotion of coral disease associated potential pathogens

被引:61
作者
Casey, Jordan M. [1 ,2 ]
Connolly, Sean R. [1 ,2 ]
Ainsworth, Tracy D. [1 ]
机构
[1] Australian Res Council, Ctr Excellence Coral Reef Studies, Townsville, Qld, Australia
[2] James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia
基金
澳大利亚研究理事会;
关键词
REEF-BUILDING CORAL; BLACK BAND DISEASE; TERRITORIAL DAMSELFISHES; BACTERIAL COMMUNITIES; MONTASTRAEA-FAVEOLATA; FRENCH-POLYNESIA; RESTORATION; FRAGMENTS; POMACENTRIDAE; DIVERSITY;
D O I
10.1038/srep11903
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
By cultivating turf algae and aggressively defending their territories, territorial damselfishes in the genus Stegastes play a major role in shaping coral-algal dynamics on coral reefs. The epilithic algal matrix (EAM) inside Stegastes' territories is known to harbor high abundances of potential coral disease pathogens. To determine the impact of territorial grazers on coral microbial assemblages, we established a coral transplant inside and outside of Stegastes' territories. Over the course of one year, the percent mortality of transplanted corals was monitored and coral samples were collected for microbial analysis. As compared to outside damselfish territories, Stegastes were associated with a higher rate of mortality of transplanted corals. However, 16S rDNA sequencing revealed that territorial grazers do not differentially impact the microbial assemblage of corals exposed to the EAM. Regardless of Stegastes presence or absence, coral transplantation resulted in a shift in the coral-associated microbial community and an increase in coral disease associated potential pathogens. Further, transplanted corals that suffer low to high mortality undergo a microbial transition from a microbiome similar to that of healthy corals to that resembling the EAM. These findings demonstrate that coral transplantation significantly impacts coral microbial communities, and transplantation may increase susceptibility to coral disease.
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页数:11
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