Skip to main content
bioRxiv
  • Home
  • About
  • Submit
  • ALERTS / RSS
Advanced Search
New Results

Metapopulation Structure of Diatom-associated Marine Bacteria

Liping Qu, Xiaoyuan Feng, Yuerong Chen, Lingyu Li, Xiaojun Wang, Zhong Hu, Hui Wang, Haiwei Luo
doi: https://doi.org/10.1101/2021.03.10.434754
Liping Qu
1Biology Department, College of Science, and Guangdong Provincial Key Laboratory of Marine Biotechnology, and Institute of Marine Sciences, Shantou University, Shantou, China
2Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Xiaoyuan Feng
3Simon F. S. Li Marine Science Laboratory, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
2Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Yuerong Chen
1Biology Department, College of Science, and Guangdong Provincial Key Laboratory of Marine Biotechnology, and Institute of Marine Sciences, Shantou University, Shantou, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Lingyu Li
1Biology Department, College of Science, and Guangdong Provincial Key Laboratory of Marine Biotechnology, and Institute of Marine Sciences, Shantou University, Shantou, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Xiaojun Wang
3Simon F. S. Li Marine Science Laboratory, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
2Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Zhong Hu
1Biology Department, College of Science, and Guangdong Provincial Key Laboratory of Marine Biotechnology, and Institute of Marine Sciences, Shantou University, Shantou, China
4Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Hui Wang
1Biology Department, College of Science, and Guangdong Provincial Key Laboratory of Marine Biotechnology, and Institute of Marine Sciences, Shantou University, Shantou, China
4Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: hluo2006@gmail.com wanghui@stu.edu.cn
Haiwei Luo
3Simon F. S. Li Marine Science Laboratory, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong SAR
2Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: hluo2006@gmail.com wanghui@stu.edu.cn
  • Abstract
  • Full Text
  • Info/History
  • Metrics
  • Preview PDF
Loading

Abstract

Marine bacteria-phytoplankton interaction ultimately shapes ecosystem productivity. The biochemical mechanisms underlying their interactions become increasingly known, yet how these ubiquitous interactions drive bacterial evolution has not been illustrated. Here, we sequenced genomes of 294 bacterial isolates associated with 19 coexisting diatom cells. These bacteria constitute eight genetically monomorphic populations of the globally abundant Roseobacter group. Six of these populations are members of Sulfitobacter, arguably the most prevalent bacteria associated with marine diatoms. A key finding is that populations varying at the intra-specific level have been differentiated and each are either associated with a single diatom host or with multiple hosts not overlapping with those of other populations. These closely related populations further show functional differentiation; they differ in motility phenotype and they harbor distinct types of secretion systems with implication for mediating organismal interactions. This interesting host-dependent population structure is even evident for demes within a genetically monomorphic population but each associated with a distinct diatom cell, as shown by a greater similarity in genome content between isolates from the same host compared to those from different hosts. Importantly, the intra- and inter-population differentiation pattern remains when the analyses are restricted to isolates from intra-specific diatom hosts, ruling out distinct selective pressures and instead suggesting coexisting microalgal cells as physical barriers of bacterial gene flow. Taken together, microalgae-associated bacteria display a unique microscale metapopulation structure, which consists of numerous small populations whose evolution is driven by random genetic drift.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
Back to top
PreviousNext
Posted March 10, 2021.
Download PDF
Email

Thank you for your interest in spreading the word about bioRxiv.

NOTE: Your email address is requested solely to identify you as the sender of this article.

Enter multiple addresses on separate lines or separate them with commas.
Metapopulation Structure of Diatom-associated Marine Bacteria
(Your Name) has forwarded a page to you from bioRxiv
(Your Name) thought you would like to see this page from the bioRxiv website.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Share
Metapopulation Structure of Diatom-associated Marine Bacteria
Liping Qu, Xiaoyuan Feng, Yuerong Chen, Lingyu Li, Xiaojun Wang, Zhong Hu, Hui Wang, Haiwei Luo
bioRxiv 2021.03.10.434754; doi: https://doi.org/10.1101/2021.03.10.434754
Digg logo Reddit logo Twitter logo Facebook logo Google logo LinkedIn logo Mendeley logo
Citation Tools
Metapopulation Structure of Diatom-associated Marine Bacteria
Liping Qu, Xiaoyuan Feng, Yuerong Chen, Lingyu Li, Xiaojun Wang, Zhong Hu, Hui Wang, Haiwei Luo
bioRxiv 2021.03.10.434754; doi: https://doi.org/10.1101/2021.03.10.434754

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
  • Tweet Widget
  • Facebook Like
  • Google Plus One

Subject Area

  • Microbiology
Subject Areas
All Articles
  • Animal Behavior and Cognition (3602)
  • Biochemistry (7569)
  • Bioengineering (5524)
  • Bioinformatics (20792)
  • Biophysics (10328)
  • Cancer Biology (7981)
  • Cell Biology (11638)
  • Clinical Trials (138)
  • Developmental Biology (6603)
  • Ecology (10202)
  • Epidemiology (2065)
  • Evolutionary Biology (13617)
  • Genetics (9541)
  • Genomics (12847)
  • Immunology (7921)
  • Microbiology (19541)
  • Molecular Biology (7657)
  • Neuroscience (42096)
  • Paleontology (308)
  • Pathology (1258)
  • Pharmacology and Toxicology (2202)
  • Physiology (3267)
  • Plant Biology (7041)
  • Scientific Communication and Education (1294)
  • Synthetic Biology (1951)
  • Systems Biology (5426)
  • Zoology (1117)