Genetic isolation between two recently diverged populations of a symbiotic fungus
Fungi are an omnipresent and highly diverse group of organisms, making up a significant part of eukaryotic diversity. Little is currently known about the drivers of fungal population differentiation and subsequent divergence of species, particularly in symbiotic, mycorrhizal fungi. Here, we investig...
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| Veröffentlicht in: | Molecular ecology 2015-06, Vol.24 (11), p.2747-2758 |
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| creator | Branco, Sara Gladieux, Pierre Ellison, Christopher E. Kuo, Alan LaButti, Kurt Lipzen, Anna Grigoriev, Igor V. Liao, Hui-Ling Vilgalys, Rytas Peay, Kabir G. Taylor, John W. Bruns, Thomas D. |
| description | Fungi are an omnipresent and highly diverse group of organisms, making up a significant part of eukaryotic diversity. Little is currently known about the drivers of fungal population differentiation and subsequent divergence of species, particularly in symbiotic, mycorrhizal fungi. Here, we investigate the population structure and environmental adaptation in Suillus brevipes (Peck) Kuntze, a wind‐dispersed soil fungus that is symbiotic with pine trees. We assembled and annotated the reference genome for Su. brevipes and resequenced the whole genomes of 28 individuals from coastal and montane sites in California. We detected two clearly delineated coast and mountain populations with very low divergence. Genomic divergence was restricted to few regions, including a region of extreme divergence containing a gene encoding for a membrane Na+/H+ exchanger known for enhancing salt tolerance in plants and yeast. Our results are consistent with a very recent split between the montane and coastal Su. brevipes populations, with few small genomic regions under positive selection and a pattern of dispersal and/or establishment limitation. Furthermore, we identify a putatively adaptive gene that motivates further functional analyses to link genotypes and phenotypes and shed light on the genetic basis of adaptive traits.
See also the Perspective by Skrede and Brandström Durling |
| doi_str_mv | 10.1111/mec.13132 |
| format | Article |
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See also the Perspective by Skrede and Brandström Durling</description><identifier>ISSN: 0962-1083</identifier><identifier>EISSN: 1365-294X</identifier><identifier>DOI: 10.1111/mec.13132</identifier><identifier>PMID: 25728665</identifier><language>eng</language><publisher>England: Blackwell Publishing Ltd</publisher><subject>adaptation ; Basidiomycota - genetics ; California ; DNA, Fungal - genetics ; Ecosystem ; Fungi ; Genetic Speciation ; Genetics, Population ; Genome, Fungal ; Genotype & phenotype ; Life Sciences ; Likelihood Functions ; Mycorrhizae - genetics ; mycorrhizal fungi ; Pinus - microbiology ; Population genetics ; population genomics ; Reproductive Isolation ; Selection, Genetic ; Sequence Analysis, DNA ; Soil Microbiology ; Suillus ; Suillus brevipes ; Symbiosis</subject><ispartof>Molecular ecology, 2015-06, Vol.24 (11), p.2747-2758</ispartof><rights>2015 John Wiley & Sons Ltd</rights><rights>2015 John Wiley & Sons Ltd.</rights><rights>Copyright © 2015 John Wiley & Sons Ltd</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6292-cd3267e7f1159dc519e38b07b3b640c0655764ce4b4560e24312689db54120113</citedby><cites>FETCH-LOGICAL-c6292-cd3267e7f1159dc519e38b07b3b640c0655764ce4b4560e24312689db54120113</cites><orcidid>0000-0003-2293-9329 ; 0000-0002-5794-7700 ; 0000-0003-3514-3530 ; 0000-0002-5838-1972 ; 0000-0003-1929-1576</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fmec.13132$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fmec.13132$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25728665$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-01303143$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Branco, Sara</creatorcontrib><creatorcontrib>Gladieux, Pierre</creatorcontrib><creatorcontrib>Ellison, Christopher E.</creatorcontrib><creatorcontrib>Kuo, Alan</creatorcontrib><creatorcontrib>LaButti, Kurt</creatorcontrib><creatorcontrib>Lipzen, Anna</creatorcontrib><creatorcontrib>Grigoriev, Igor V.</creatorcontrib><creatorcontrib>Liao, Hui-Ling</creatorcontrib><creatorcontrib>Vilgalys, Rytas</creatorcontrib><creatorcontrib>Peay, Kabir G.</creatorcontrib><creatorcontrib>Taylor, John W.</creatorcontrib><creatorcontrib>Bruns, Thomas D.</creatorcontrib><title>Genetic isolation between two recently diverged populations of a symbiotic fungus</title><title>Molecular ecology</title><addtitle>Mol Ecol</addtitle><description>Fungi are an omnipresent and highly diverse group of organisms, making up a significant part of eukaryotic diversity. Little is currently known about the drivers of fungal population differentiation and subsequent divergence of species, particularly in symbiotic, mycorrhizal fungi. Here, we investigate the population structure and environmental adaptation in Suillus brevipes (Peck) Kuntze, a wind‐dispersed soil fungus that is symbiotic with pine trees. We assembled and annotated the reference genome for Su. brevipes and resequenced the whole genomes of 28 individuals from coastal and montane sites in California. We detected two clearly delineated coast and mountain populations with very low divergence. Genomic divergence was restricted to few regions, including a region of extreme divergence containing a gene encoding for a membrane Na+/H+ exchanger known for enhancing salt tolerance in plants and yeast. Our results are consistent with a very recent split between the montane and coastal Su. brevipes populations, with few small genomic regions under positive selection and a pattern of dispersal and/or establishment limitation. Furthermore, we identify a putatively adaptive gene that motivates further functional analyses to link genotypes and phenotypes and shed light on the genetic basis of adaptive traits.
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Little is currently known about the drivers of fungal population differentiation and subsequent divergence of species, particularly in symbiotic, mycorrhizal fungi. Here, we investigate the population structure and environmental adaptation in Suillus brevipes (Peck) Kuntze, a wind‐dispersed soil fungus that is symbiotic with pine trees. We assembled and annotated the reference genome for Su. brevipes and resequenced the whole genomes of 28 individuals from coastal and montane sites in California. We detected two clearly delineated coast and mountain populations with very low divergence. Genomic divergence was restricted to few regions, including a region of extreme divergence containing a gene encoding for a membrane Na+/H+ exchanger known for enhancing salt tolerance in plants and yeast. Our results are consistent with a very recent split between the montane and coastal Su. brevipes populations, with few small genomic regions under positive selection and a pattern of dispersal and/or establishment limitation. Furthermore, we identify a putatively adaptive gene that motivates further functional analyses to link genotypes and phenotypes and shed light on the genetic basis of adaptive traits.
See also the Perspective by Skrede and Brandström Durling</abstract><cop>England</cop><pub>Blackwell Publishing Ltd</pub><pmid>25728665</pmid><doi>10.1111/mec.13132</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0003-2293-9329</orcidid><orcidid>https://orcid.org/0000-0002-5794-7700</orcidid><orcidid>https://orcid.org/0000-0003-3514-3530</orcidid><orcidid>https://orcid.org/0000-0002-5838-1972</orcidid><orcidid>https://orcid.org/0000-0003-1929-1576</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Molecular ecology, 2015-06, Vol.24 (11), p.2747-2758 |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete |
| subjects | adaptation Basidiomycota - genetics California DNA, Fungal - genetics Ecosystem Fungi Genetic Speciation Genetics, Population Genome, Fungal Genotype & phenotype Life Sciences Likelihood Functions Mycorrhizae - genetics mycorrhizal fungi Pinus - microbiology Population genetics population genomics Reproductive Isolation Selection, Genetic Sequence Analysis, DNA Soil Microbiology Suillus Suillus brevipes Symbiosis |
| title | Genetic isolation between two recently diverged populations of a symbiotic fungus |
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