Phylogenetic Perspectives on the Origins of Nodulation
Recent refinements to the phylogeny of rosid angiosperms support the conclusion that nodulation has evolved several times in the so-called N2-fixing clade (NFC), and provide dates for these origins. The hypothesized predisposition that enabled the evolution of nodulation occurred approximately 100 m...
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| Format: | Article |
| Language: | English |
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The American Phytopathological Society
2011-11-01
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| Series: | Molecular Plant-Microbe Interactions |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI-05-11-0114 |
| _version_ | 1818647110138986496 |
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| author | Jeff J. Doyle |
| author_facet | Jeff J. Doyle |
| author_sort | Jeff J. Doyle |
| collection | DOAJ |
| description | Recent refinements to the phylogeny of rosid angiosperms support the conclusion that nodulation has evolved several times in the so-called N2-fixing clade (NFC), and provide dates for these origins. The hypothesized predisposition that enabled the evolution of nodulation occurred approximately 100 million years ago (MYA), was retained in the various lineages that radiated rapidly shortly thereafter, and was functional in its non-nodulation role for at least an additional 30 million years in each nodulating lineage. Legumes radiated rapidly shortly after their origin approximately 60 MYA, and nodulation most likely evolved several times during this radiation. The major lineages of papilionoid legumes diverged close to the time of origin of nodulation, accounting for the diversity of nodule biology in the group. Nodulation symbioses exemplify the concept of “deep homology,” sharing various homologous components across nonhomologous origins of nodulation, largely due to recruitment from existing functions, notably the older arbuscular mycorrhizal symbiosis. Although polyploidy may have played a role in the origin of papilionoid legume nodules, it did not do so in other legumes, nor did the prerosid whole-genome triplication lead directly to the predisposition of nodulation. |
| first_indexed | 2024-12-17T00:57:19Z |
| format | Article |
| id | doaj.art-bb679532bede487dadd9757e10b7337d |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-12-17T00:57:19Z |
| publishDate | 2011-11-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-bb679532bede487dadd9757e10b7337d2022-12-21T22:09:35ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062011-11-0124111289129510.1094/MPMI-05-11-0114Phylogenetic Perspectives on the Origins of NodulationJeff J. DoyleRecent refinements to the phylogeny of rosid angiosperms support the conclusion that nodulation has evolved several times in the so-called N2-fixing clade (NFC), and provide dates for these origins. The hypothesized predisposition that enabled the evolution of nodulation occurred approximately 100 million years ago (MYA), was retained in the various lineages that radiated rapidly shortly thereafter, and was functional in its non-nodulation role for at least an additional 30 million years in each nodulating lineage. Legumes radiated rapidly shortly after their origin approximately 60 MYA, and nodulation most likely evolved several times during this radiation. The major lineages of papilionoid legumes diverged close to the time of origin of nodulation, accounting for the diversity of nodule biology in the group. Nodulation symbioses exemplify the concept of “deep homology,” sharing various homologous components across nonhomologous origins of nodulation, largely due to recruitment from existing functions, notably the older arbuscular mycorrhizal symbiosis. Although polyploidy may have played a role in the origin of papilionoid legume nodules, it did not do so in other legumes, nor did the prerosid whole-genome triplication lead directly to the predisposition of nodulation.https://apsjournals.apsnet.org/doi/10.1094/MPMI-05-11-0114 |
| spellingShingle | Jeff J. Doyle Phylogenetic Perspectives on the Origins of Nodulation Molecular Plant-Microbe Interactions |
| title | Phylogenetic Perspectives on the Origins of Nodulation |
| title_full | Phylogenetic Perspectives on the Origins of Nodulation |
| title_fullStr | Phylogenetic Perspectives on the Origins of Nodulation |
| title_full_unstemmed | Phylogenetic Perspectives on the Origins of Nodulation |
| title_short | Phylogenetic Perspectives on the Origins of Nodulation |
| title_sort | phylogenetic perspectives on the origins of nodulation |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI-05-11-0114 |
| work_keys_str_mv | AT jeffjdoyle phylogeneticperspectivesontheoriginsofnodulation |