S-RNase-mediated gametophytic self-incompatibility is ancestral in eudicots
The evolutionary relationship between self-incompatibility systems in different families of flowering plants has long been a topic of interest. Physiological differences in the mode of gene action and the enormous sequence differences between genes with different modes of action suggest that many in...
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Veröffentlicht in: | Molecular biology and evolution 2002-06, Vol.19 (6), p.825-829 |
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description | The evolutionary relationship between self-incompatibility systems in different families of flowering plants has long been a topic of interest. Physiological differences in the mode of gene action and the enormous sequence differences between genes with different modes of action suggest that many instances of self-incompatibility have arisen independently. In contrast, previous analyses of the S-RNase associated with gametophytic self-incompatibility in the eudicot families (Solanaceae, Scrophulariaceae, and Rosaceae) have suggested that sequences within families form well-supported and distinct lineages. In this study we demonstrate that in fact, S-RNase-mediated gametophytic self-incompatibility evolved only once in the eudicots. |
doi_str_mv | 10.1093/oxfordjournals.molbev.a004139 |
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source | MEDLINE; Oxford Journals Open Access Collection; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry |
subjects | Magnoliopsida - genetics Magnoliopsida - metabolism Phylogeny Reproduction - genetics Reproduction - physiology Ribonucleases - genetics Ribonucleases - metabolism Sequence Alignment Sequence Analysis, Protein |
title | S-RNase-mediated gametophytic self-incompatibility is ancestral in eudicots |
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