Diversity and community structure of marine microbes around the Benham Rise underwater plateau, northeastern Philippines

PeerJ

article

Andrian P. Gajigan¹  Aletta T. Yñiguez¹  Cesar L. Villanoy¹  Maria Lourdes San Diego-McGlone¹  Gil S. Jacinto¹  Cecilia Conaco¹ 

[1] Marine Science Institute, University of the Philippines Diliman;Department of Oceanography, University of Hawaii at Manoa

关键词: Benham Rise;    Marine microbes;    Community structure;    Diversity;    16S rRNA;   

DOI  :  10.7717/peerj.4781

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Microbes are central to the structuring and functioning of marine ecosystems. Given the remarkable diversity of the ocean microbiome, uncovering marine microbial taxa remains a fundamental challenge in microbial ecology. However, there has been little effort, thus far, to describe the diversity of marine microorganisms in the region of high marine biodiversity around the Philippines. Here, we present data on the taxonomic diversity of bacteria and archaea in Benham Rise, Philippines, Western Pacific Ocean, using 16S V4 rRNA gene sequencing. The major bacterial and archaeal phyla identified in the Benham Rise are Proteobacteria, Cyanobacteria, Actinobacteria, Bacteroidetes, Marinimicrobia, Thaumarchaeota and, Euryarchaeota. The upper mesopelagic layer exhibited greater microbial diversity and richness compared to surface waters. Vertical zonation of the microbial community is evident and may be attributed to physical stratification of the water column acting as a dispersal barrier. Canonical Correspondence Analysis (CCA) recapitulated previously known associations of taxa and physicochemical parameters in the environment, such as the association of oligotrophic clades with low nutrient surface water and deep water clades that have the capacity to oxidize ammonia or nitrite at the upper mesopelagic layer. These findings provide foundational information on the diversity of marine microbes in Philippine waters. Further studies are warranted to gain a more comprehensive picture of microbial diversity within the region.

【 授权许可】

CC BY