Shotgun metagenomics reveals a heterogeneous prokaryotic community and a wide array of antibiotic resistance genes in mangrove sediment.,FEMS Microbiology Ecology

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Shotgun metagenomics reveals a heterogeneous prokaryotic community and a wide array of antibiotic resistance genes in mangrove sediment.
FEMS Microbiology Ecology ( IF 3.5 ) Pub Date : 2020-08-26 , DOI: 10.1093/femsec/fiaa173
Madangchanok Imchen ₁ , Ranjith Kumavath ₁

Affiliation

Saline tolerant mangrove forest partakes vital biogeochemical cycles. However, they are endangered due to deforestation as a result of urbanization. In this study, we have carried out a metagenomic snapshot of mangrove ecosystem from five countries to assess its taxonomic, functional and antibiotic resistome structure. Chao1 alpha diversity varied significantly (P < 0.001) between the countries (Brazil, Saudi Arabia, China, India, and Malaysia). All datasets were composed of 33 phyla dominated by seven major phyla covering over 90% relative abundance. Comparative analysis of mangrove with terrestrial and marine ecosystem revealed strongest heterogeneity in the mangrove microbial community. We also observed that the mangrove community shared similarities to both terrestrial and marine microbiome forming interlink between the two contrasting ecosystems. ARG resistome was comprised of nineteen level 3 classifications dominated by Multidrug Resistance Efflux Pumps (46.7±4.3%) and BlaR1 Family Regulatory Sensor-transducer Disambiguation (25.2±4.8%). ARG relative abundance was significantly higher in Asian countries and in human intervened datasets at global scale. Our study shows that mangrove microbial community and its antibiotic resistance are affected by geography as well as human intervention and unique to other ecosystems. Understanding the changes of mangrove microbiome and its ARG is significant for sustainable development and public health.

更新日期：2020-08-26

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