Seasonal succession of microbes in different size-fractions and their modular structures determined by both macro- and micro-environmental filtering in dynamic coastal waters SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
Seasonal succession of microbes in different size-fractions and their modular structures determined by both macro- and micro-environmental filtering in dynamic coastal waters
Author(s)
Chun, Seong-Jun; Cui, Yingshun; Baek, Seung Ho; Ahn, Chi-Yong; Oh, Hee-Mock
KIOST Author(s)
Baek, Seung Ho(백승호)
Alternative Author(s)
백승호
Publication Year
2021-08-25
Abstract
Microbes interact with each other in response to various environmental changes in coastal marine ecosystems. To explore how the macroenvironment (environmental filtering) and species-engineered microenvironment (niche construction) affect the ecological network of the marine microbiome in the highly dynamic coastal waters of Korea, we analyzed the modular structures of the microbial community and identified microbial interconnections in different size fractions for a year. Fluctuations in the macroenvironment, such as temperature and nutrient concentrations driven by seasonal changes, are the major factors in determining successive microbial modules. Compared to particle-associated (PA) microbes, free-living (FL) microbes seemed to be more affected by macroenvironmental filtering. Modules related to nutrients were further divided into various modules according to different lifestyles. In addition, a large transient discharge of the Changjiang (Yangtze River) in summer also formed a distinct microbial module, which was related to the high ammonia concentration arising from phytoplankton degradation. Microbes belonging to the SAR11, SAR86, and SAR116 clades, Flavobacteriaceae, and MG IIa-L showed repeated interconnections in temperature-related modules, while the SAR202 clade, Marinimicrobia, DEV007 clade, and Arctic97B-4 and Sva0996 marine groups displayed repeated connections in nutrient-related modules. These & lsquo;skeleton & rsquo;-forming microbes created species-engineered microenvironments, further fine-tuning microbial modular structures. Furthermore, they serve as keystone species for module stability by linking interdependent microbial partners within their own modules through universally beneficial met abolic activities. Therefore, they could reinforce the ecological resilience of microbial communities under abiotic and biotic perturbations in dynamic coastal waters. In conclusion, both macro-and micro-environmental filtering were important for determining the seasonal succession of microbial community structures. (c) 2021 Elsevier B.V. All rights reserved.
ISSN
0048-9697
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41309
DOI
10.1016/j.scitotenv.2021.147046
Bibliographic Citation
SCIENCE OF THE TOTAL ENVIRONMENT, v.784, 2021
Publisher
ELSEVIER
Subject
FREE-LIVING BACTERIA; COMMUNITY COMPOSITION; NETWORK ANALYSIS; ORGANIC-MATTER; TIME-SERIES; BACTERIOPLANKTON; DEGRADATION; ASSEMBLAGES; SEA; TEMPERATURE
Keywords
Coastal water; Microbial community; Network analysis; Microbial module; Environmental filtering; Niche construction
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse