The Effect of Organic Carbon on Soil Bacterial Diversity in an Antarctic Lake Region

Abstract

This study assessed the effects of changes in organic carbon content on soil bacterial community composition and diversity in the Antarctic Fildes Peninsula. 16S rRNA gene sequencing was performed to investigate bacterial community composition. Firstly, we found that organic carbon (OrC) and nutrients showed an increasing trend in the lake area. Secondly, soil geochemistry changes affected microbial composition in the soil. Specifically, we found 3416 operational taxonomical units (OTUs) in 300 genera in five main phyla: Proteobacteria, Actinobacteria, Acidobacteria, Chloroflexi, and Bacteroidetes. Although the diversity was similar among the four sites, the composition was different. Among them, Hungateii content changed very significantly, from 16.67% to 33.33%. Canonical correspondence analysis showed that most measured geochemical factors were relevant in structuring micro-biomes, and organic carbon concentration showed the highest correlation, followed by NO ₃ ⁻-N. Hungateii was significantly correlated with the content of organic carbon. Our finding suggested organic carbon played an important role in soil bacterial communities of the Antarctic coastal lake region.

Journal

Journal ID (publisher-id): JOUC

Title: Journal of Ocean University of China

Publisher: Science Press and Springer (China )

ISSN (Electronic): 1672-5182

Publication date (Electronic): 12 November 2019

Publication date (Print): 01 December 2019

Volume: 18

Issue: 6

Pages: 1402-1410

Affiliations

¹College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China

²Key Laboratory of Marine Bioactive Substances, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

³Department of Bioengineering, College of Marine Sciences and Biological Engineering, Qingdao University of Science & Technology, Qingdao 266042, China

⁴School of Basic Medicine, Qingdao University, Qingdao 266071, China

⁵Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, China

⁶Center for Fundamental and Applied Microbiomics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA

Author notes

*Corresponding author: WANG Nengfei

Article

Publisher ID: s11802-019-4097-x

DOI: 10.1007/s11802-019-4097-x

Copyright statement: Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2019.

License:

The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

Product

Self URI (journal-page): https://www.springer.com/journal/11802