Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus

The ISME Journal
Nadav KashtanSallie W Chisholm

Abstract

The Atlantic and Pacific Oceans represent different biogeochemical regimes in which the abundant marine cyanobacterium Prochlorococcus thrives. We have shown that Prochlorococcus populations in the Atlantic are composed of hundreds of genomically, and likely ecologically, distinct coexisting subpopulations with distinct genomic backbones. Here we ask if differences in the ecology and selection pressures between the Atlantic and Pacific are reflected in the diversity and genomic composition of their indigenous Prochlorococcus populations. We applied large-scale single-cell genomics and compared the cell-by-cell genomic composition of wild populations of co-occurring cells from samples from Station ALOHA off Hawaii, and from Bermuda Atlantic Time Series Station off Bermuda. We reveal fundamental differences in diversity and genomic structure of populations between the sites. The Pacific populations are more diverse than those in the Atlantic, composed of significantly more coexisting subpopulations and lacking dominant subpopulations. Prochlorococcus from the two sites seem to be composed of mostly non-overlapping distinct sets of subpopulations with different genomic backbones-likely reflecting different sets of ocean-specific m...Continue Reading

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Citations

Mar 6, 2018·FEMS Microbiology Ecology·Nathan A M ChrismasPatricia Sánchez-Baracaldo
Aug 17, 2019·The ISME Journal·Natalia García-GarcíaFernando Puente-Sánchez
Feb 23, 2020·FEMS Microbiology Reviews·S Joke LambrechtWolfgang R Hess
May 30, 2020·Microbial Ecology·Diogo TschoekeCristiane Thompson
Oct 5, 2018·The ISME Journal·Alyssa G KentAdam C Martiny
Sep 16, 2020·The ISME Journal·Raphaël LaurenceauSallie W Chisholm
Oct 3, 2020·Access Microbiology·Raphaël LaurenceauSallie W Chisholm
Dec 14, 2019·Cell·Maria G PachiadakiRamunas Stepanauskas
Apr 8, 2021·The ISME Journal·Eric D BecraftRamunas Stepanauskas
Apr 30, 2021·The ISME Journal·Haowen DuanFan Lü

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