Difference of nitrogen-cycling microbes between shallow bay and deep-sea sediments in the South China Sea

Applied Microbiology and Biotechnology
Tiantian YuFengping Wang

Abstract

In marine sediments, microorganisms are known to play important roles in nitrogen cycling; however, the composition and quantity of microbes taking part in each process of nitrogen cycling are currently unclear. In this study, two different types of marine sediment samples (shallow bay and deep-sea sediments) in the South China Sea (SCS) were selected to investigate the microbial community involved in nitrogen cycling. The abundance and composition of prokaryotes and seven key functional genes involved in five processes of the nitrogen cycle [nitrogen fixation, nitrification, denitrification, dissimilatory nitrate reduction to ammonium (DNRA), and anaerobic ammonia oxidation (anammox)] were presented. The results showed that a higher abundance of denitrifiers was detected in shallow bay sediments, while a higher abundance of microbes involved in ammonia oxidation, anammox, and DNRA was found in the deep-sea sediments. Moreover, phylogenetic differentiation of bacterial amoA, nirS, nosZ, and nrfA sequences between the two types of sediments was also presented, suggesting environmental selection of microbes with the same geochemical functions but varying physiological properties.

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Citations

Nov 18, 2020·The Journal of Microbiology·Tie-Qiang MaoLi-Jun Hou
Feb 6, 2021·Frontiers in Microbiology·Ugo MarzocchiUlisse Cardini
Mar 25, 2019·Journal of Microbiological Methods·Jordan CannonJoanne Chee-Sanford
Apr 16, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Ngoc Tung QuachQuyet Tien Phi

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Datasets Mentioned

BETA
SRP106514
MF093240
MF093516

Methods Mentioned

BETA
PCR
Illumina-sequencing

Software Mentioned

illumina
FLASH
MEGA
BLASTp
QIIME
UCHIME
CLUSTAL X
UCLUST

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