Parallel evolution of TCP and B-class genes in Commelinaceae flower bilateral symmetry
dc.contributor.author | Preston, Jill C. | |
dc.contributor.author | Hileman, Lena C. | |
dc.date.accessioned | 2014-01-24T22:11:47Z | |
dc.date.available | 2014-01-24T22:11:47Z | |
dc.date.issued | 2012-03-06 | |
dc.identifier.citation | Preston, Jill C, and Lena C Hileman. 2012. “Parallel Evolution of TCP and B-Class Genes in Commelinaceae Flower Bilateral Symmetry.” EvoDevo 3:6. http://dx.doi.org/10.1186/2041-9139-3-6 | |
dc.identifier.uri | http://hdl.handle.net/1808/12853 | |
dc.description.abstract | Background Flower bilateral symmetry (zygomorphy) has evolved multiple times independently across angiosperms and is correlated with increased pollinator specialization and speciation rates. Functional and expression analyses in distantly related core eudicots and monocots implicate independent recruitment of class II TCP genes in the evolution of flower bilateral symmetry. Furthermore, available evidence suggests that monocot flower bilateral symmetry might also have evolved through changes in B-class homeotic MADS-box gene function. Methods In order to test the non-exclusive hypotheses that changes in TCP and B-class gene developmental function underlie flower symmetry evolution in the monocot family Commelinaceae, we compared expression patterns of teosinte branched1 (TB1)-like, DEFICIENS (DEF)-like, and GLOBOSA (GLO)-like genes in morphologically distinct bilaterally symmetrical flowers of Commelina communis and Commelina dianthifolia, and radially symmetrical flowers of Tradescantia pallida. Results Expression data demonstrate that TB1-like genes are asymmetrically expressed in tepals of bilaterally symmetrical Commelina, but not radially symmetrical Tradescantia, flowers. Furthermore, DEF-like genes are expressed in showy inner tepals, staminodes and stamens of all three species, but not in the distinct outer tepal-like ventral inner tepals of C. communis. Conclusions Together with other studies, these data suggest parallel recruitment of TB1-like genes in the independent evolution of flower bilateral symmetry at early stages of Commelina flower development, and the later stage homeotic transformation of C. communis inner tepals into outer tepals through the loss of DEF-like gene expression. | |
dc.publisher | BioMed Central | |
dc.rights | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | |
dc.rights.uri | http://creativecommons.org/licenses/by/2.0 | |
dc.subject | Commelinaceae | |
dc.subject | B class genes | |
dc.subject | CYCLOIDEA | |
dc.subject | homeotic change | |
dc.subject | monocots | |
dc.subject | tepals | |
dc.subject | teosinte branched1 | |
dc.title | Parallel evolution of TCP and B-class genes in Commelinaceae flower bilateral symmetry | |
dc.type | Article | |
kusw.kuauthor | Preston, Jill C | |
kusw.kuauthor | Hileman, Lena C | |
kusw.kudepartment | Department of Ecology and Evolutionary Biology | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1186/2041-9139-3-6 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |
Files in this item
This item appears in the following Collection(s)
Except where otherwise noted, this item's license is described as: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.