Characteristics of Microbial Community and Function With the Succession of Mangroves

Frontiers in Microbiology

Fulin Sun¹  Mai Ye²  Swee Yeok Foong³  Zhimao Mai⁴  Youshao Wang⁴  Lin Wang⁴  Hao Cheng⁴ 

[1] Daya Bay Marine Biology Research Station, Chinese Academy of Sciences, Shenzhen, China;Guangdong Provincial Academy of Environmental Science, Guangzhou, China;School of Biological Sciences, Universiti Sains Malaysia, Penang, Malaysia;Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China;State Key Laboratory of Tropical Oceanography, Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China;

关键词: mangrove succession;    microbial community and function;    carbon metabolism;    Rhizophora apiculata;    Merbok river estuary;   

DOI  :  10.3389/fmicb.2021.764974

来源: DOAJ

【 摘 要 】

In this study, 16S high-throughput and metagenomic sequencing analyses were employed to explore the changes in microbial community and function with the succession of mangroves (Sonneratia alba, Rhizophora apiculata, and Bruguiera parviflora) along the Merbok river estuary in Malaysia. The sediments of the three mangroves harbored their own unique dominant microbial taxa, whereas R. apiculata exhibited the highest microbial diversity. In general, Gammaproteobacteria, Actinobacteria, Alphaproteobacteria, Deltaproteobacteria, and Anaerolineae were the dominant microbial classes, but their abundances varied significantly among the three mangroves. Principal coordinates and redundancy analyses revealed that the specificity of the microbial community was highly correlated with mangrove populations and environmental factors. The results further showed that R. apiculata exhibited the highest carbon-related metabolism, coinciding with the highest organic carbon and microbial diversity. In addition, specific microbial taxa, such as Desulfobacterales and Rhizobiales, contributed the highest functional activities related to carbon metabolism, prokaryote carbon fixation, and methane metabolism. The present results provide a comprehensive understanding of the adaptations and functions of microbes in relation to environmental transition and mangrove succession in intertidal regions. High microbial diversity and carbon metabolism in R. apiculata might in turn facilitate and maintain the formation of climax mangroves in the middle region of the Merbok river estuary.

【 授权许可】

Unknown