Identification of Sponge-Associated Bacteria From the Coast of Kuwait and Their Potential Biotechnological Applications

Overview

Journal Front Microbiol

Specialty Microbiology

Date 2022 Jul 21

PMID 35859748

Authors

Shahad Abbas

Huda Mahmoud

Affiliations

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Abstract

Sponges are among the most ancient animals harboring complex microbial communities with potential applications in biotechnology. The Arabian Gulf is a thermally stressed enclosed body of water located in an arid region where sponges and their halobionts are understudied. This study combined 16S rRNA next-generation gene amplicon sequencing and cultivation techniques to explore the abundance and diversity of sponge-associated bacteria. Culture-independent techniques showed the associations of more than 25 bacterial phyla with sp., sp., and spp. Regarding cultivable bacteria, 315 bacterial isolates associated with the sponge sp. were cultivated; these isolates were affiliated with the phyla Proteobacteria and Firmicutes and were distributed among six bacterial genera. Selected strains of , , , , and were tested for antimicrobial activity against indicator microorganisms and protease enzyme production. Seven strains exhibited weak to moderate growth inhibition against and . Furthermore, 29 different strains of , , and exhibited different degrees of positive protease activity. In addition, cultivated strains of , , and were tested for their biomineralization abilities. Herein we report for the first time the isolation of biomineralizing bacteria from sponge tissue where eleven bacterial isolates produced different shapes of calcium carbonate crystals on agar. Our observations shed light on the diversity and biotechnological potentials of sponges-associated bacteria inhabiting one of the world's hottest seas.

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