File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Cryptic Speciation of a Pelagic Roseobacter Population Varying at a Few Thousand Nucleotide Sites

TitleCryptic Speciation of a Pelagic Roseobacter Population Varying at a Few Thousand Nucleotide Sites
Authors
Issue Date2020
PublisherNature Publishing Group. The Journal's web site is located at http://www.nature.com/ismej/index.html
Citation
The ISME Journal, 2020, v. 14 n. 12, p. 3106-3119 How to Cite?
AbstractA drop of seawater contains numerous microspatial niches at the scale relevant to microbial activities. Examples are abiotic niches such as detrital particles that show different sizes and organic contents, and biotic niches resulting from bacteria–phage and bacteria–phytoplankton interactions. A common practice to investigate the impact of microenvironments on bacterial evolution is to separate the microenvironments physically and compare the bacterial inhabitants from each. It remains poorly understood, however, which microenvironment primarily drives bacterioplankton evolution in the pelagic ocean. By applying a dilution cultivation approach to an undisturbed coastal water sample, we isolate a bacterial population affiliated with the globally dominant Roseobacter group. Although varying at just a few thousand nucleotide sites across the whole genomes, members of this clonal population are diverging into two genetically separated subspecies. Genes underlying speciation are not unique to subspecies but instead clustered at the shared regions that represent ~6% of the genomic DNA. They are primarily involved in vitamin synthesis, motility, oxidative defense, carbohydrate, and amino acid utilization, consistent with the known strategies that roseobacters take to interact with phytoplankton and particles. Physiological assays corroborate that one subspecies outcompetes the other in these traits. Our results indicate that the microenvironments in the pelagic ocean represented by phytoplankton and organic particles are likely important niches that drive the cryptic speciation of the Roseobacter population, though microhabitats contributed by other less abundant pelagic hosts cannot be ruled out.
Persistent Identifierhttp://hdl.handle.net/10722/286505
ISSN
2023 Impact Factor: 10.8
2023 SCImago Journal Rankings: 3.692
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, X-
dc.contributor.authorZhang, Y-
dc.contributor.authorRen, M-
dc.contributor.authorXia, T-
dc.contributor.authorChu, X-
dc.contributor.authorLiu, C-
dc.contributor.authorLin, X-
dc.contributor.authorHuang, Y-
dc.contributor.authorChen, Z-
dc.contributor.authorYan, A-
dc.contributor.authorLuo, H-
dc.date.accessioned2020-08-31T07:04:48Z-
dc.date.available2020-08-31T07:04:48Z-
dc.date.issued2020-
dc.identifier.citationThe ISME Journal, 2020, v. 14 n. 12, p. 3106-3119-
dc.identifier.issn1751-7362-
dc.identifier.urihttp://hdl.handle.net/10722/286505-
dc.description.abstractA drop of seawater contains numerous microspatial niches at the scale relevant to microbial activities. Examples are abiotic niches such as detrital particles that show different sizes and organic contents, and biotic niches resulting from bacteria–phage and bacteria–phytoplankton interactions. A common practice to investigate the impact of microenvironments on bacterial evolution is to separate the microenvironments physically and compare the bacterial inhabitants from each. It remains poorly understood, however, which microenvironment primarily drives bacterioplankton evolution in the pelagic ocean. By applying a dilution cultivation approach to an undisturbed coastal water sample, we isolate a bacterial population affiliated with the globally dominant Roseobacter group. Although varying at just a few thousand nucleotide sites across the whole genomes, members of this clonal population are diverging into two genetically separated subspecies. Genes underlying speciation are not unique to subspecies but instead clustered at the shared regions that represent ~6% of the genomic DNA. They are primarily involved in vitamin synthesis, motility, oxidative defense, carbohydrate, and amino acid utilization, consistent with the known strategies that roseobacters take to interact with phytoplankton and particles. Physiological assays corroborate that one subspecies outcompetes the other in these traits. Our results indicate that the microenvironments in the pelagic ocean represented by phytoplankton and organic particles are likely important niches that drive the cryptic speciation of the Roseobacter population, though microhabitats contributed by other less abundant pelagic hosts cannot be ruled out.-
dc.languageeng-
dc.publisherNature Publishing Group. The Journal's web site is located at http://www.nature.com/ismej/index.html-
dc.relation.ispartofThe ISME Journal-
dc.titleCryptic Speciation of a Pelagic Roseobacter Population Varying at a Few Thousand Nucleotide Sites-
dc.typeArticle-
dc.identifier.emailYan, A: ayan8@hku.hk-
dc.identifier.authorityYan, A=rp00823-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1038/s41396-020-00743-7-
dc.identifier.pmid32814868-
dc.identifier.pmcidPMC7784932-
dc.identifier.scopuseid_2-s2.0-85089564933-
dc.identifier.hkuros313543-
dc.identifier.volume14-
dc.identifier.issue12-
dc.identifier.spage3106-
dc.identifier.epage3119-
dc.identifier.isiWOS:000560999800002-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1751-7362-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats