Macrophylogenetic analyses of the gain and loss of self-incompatibility in the Asteraceae
Article first published online: 19 OCT 2006
Volume 173, Issue 2, pages 401–414, January 2007
How to Cite
Ferrer, M. M. and Good-Avila, S. V. (2007), Macrophylogenetic analyses of the gain and loss of self-incompatibility in the Asteraceae. New Phytologist, 173: 401–414. doi: 10.1111/j.1469-8137.2006.01905.x
- Issue published online: 19 OCT 2006
- Article first published online: 19 OCT 2006
- Received: 22 August 2006 Accepted: 24 August 2006
- ancestral character state reconstruction;
- evolution of breeding systems;
- partial self-incompatibility;
- • The self-incompatibility (SI) status of 571 taxa from the Asteraceae was identified and the taxa were scored as having SI, partial SI or self-compatibility (SC) as their breeding system. A molecular phylogeny of the internal transcribed spacer (ITS) region was constructed for 211 of these taxa.
- • Macrophylogenetic methods were used to test hypotheses concerning the ancestral state of SI in the Asteraceae, the gain and loss of SI, the irreversibility of the loss of SI and the potential for partial SI or SC to be terminal states.
- • The ancestral breeding system in the family could not be resolved. Both maximum likelihood and parsimony analyses indicated that transitions among all breeding system states provide the best fit to the data and that neither partial SI nor SC is a terminal state. Furthermore, the data indicated that the loss of SI is not irreversible, although breeding system evolution has been more dynamic in some clades than in others.
- • These results are discussed within the context of evidence for the gain and loss of SI, the evolutionary role of partial SI and methodological assumptions of tests of breeding system evolution.