Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus
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 subpopu...
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2018
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| Online Access: | http://hdl.handle.net/1721.1/119389 https://orcid.org/0000-0003-2795-2418 https://orcid.org/0000-0003-1480-2445 |
| _version_ | 1826209146500808704 |
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| author | Grinberg, Maor Stepanauskas, Ramunas Kashtan, Nadav Roggensack, Sara Thompson, Jessica Weidemier Chisholm, Sallie (Penny) |
| author2 | Massachusetts Institute of Technology. Department of Biology |
| author_facet | Massachusetts Institute of Technology. Department of Biology Grinberg, Maor Stepanauskas, Ramunas Kashtan, Nadav Roggensack, Sara Thompson, Jessica Weidemier Chisholm, Sallie (Penny) |
| author_sort | Grinberg, Maor |
| collection | MIT |
| description | 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 micro-niches. Furthermore, phylogenetically closely related strains carry ocean-associated nutrient acquisition genes likely reflecting differences in major selection pressures between the oceans. This differential selection, along with geographic separation, clearly has a significant role in shaping these populations. |
| first_indexed | 2024-09-23T14:17:57Z |
| format | Article |
| id | mit-1721.1/119389 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:17:57Z |
| publishDate | 2018 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1193892022-09-29T08:31:43Z Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus Grinberg, Maor Stepanauskas, Ramunas Kashtan, Nadav Roggensack, Sara Thompson, Jessica Weidemier Chisholm, Sallie (Penny) Massachusetts Institute of Technology. Department of Biology Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Sallie (Penny) Chisholm Kashtan, Nadav Roggensack, Sara Berta-Thompson, Jessica Weidemier Chisholm, Sallie W 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 micro-niches. Furthermore, phylogenetically closely related strains carry ocean-associated nutrient acquisition genes likely reflecting differences in major selection pressures between the oceans. This differential selection, along with geographic separation, clearly has a significant role in shaping these populations. 2018-12-03T16:46:40Z 2018-12-03T16:46:40Z 2017-05 2017-03 Article http://purl.org/eprint/type/JournalArticle 1751-7362 1751-7370 http://hdl.handle.net/1721.1/119389 Kashtan, Nadav et al. “Fundamental Differences in Diversity and Genomic Population Structure Between Atlantic and Pacific Prochlorococcus.” The ISME Journal 11, 9 (May 2017): 1997–2011 https://orcid.org/0000-0003-2795-2418 https://orcid.org/0000-0003-1480-2445 en_US http://dx.doi.org/10.1038/ismej.2017.64 ISME Journal Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Nature Publishing Group Prof. Chisholm via Elizabeth Soergel |
| spellingShingle | Grinberg, Maor Stepanauskas, Ramunas Kashtan, Nadav Roggensack, Sara Thompson, Jessica Weidemier Chisholm, Sallie (Penny) Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus |
| title | Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus |
| title_full | Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus |
| title_fullStr | Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus |
| title_full_unstemmed | Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus |
| title_short | Fundamental differences in diversity and genomic population structure between Atlantic and Pacific Prochlorococcus |
| title_sort | fundamental differences in diversity and genomic population structure between atlantic and pacific prochlorococcus |
| url | http://hdl.handle.net/1721.1/119389 https://orcid.org/0000-0003-2795-2418 https://orcid.org/0000-0003-1480-2445 |
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