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Multiple CMS-restorer gene polymorphism in gynodioecious Plantago coronopus

Van Damme, J.M.M. and Hundscheid, M.P.J. and Ivanovic, S. and Koelewijn, H.P. (2004) Multiple CMS-restorer gene polymorphism in gynodioecious Plantago coronopus. Heredity, 93, 175-181. ISSN 0018-067X.

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Official URL: http://dx.doi.org/10.1038/sj.hdy.6800490

Abstract

The mode of inheritance of the male sterility trait is crucial for understanding the evolutionary dynamics of the sexual system gynodioecy, which is the co-occurrence of female and hermaphrodite plants in natural populations. Both cytoplasmic (CMS) and nuclear (restorer) genes are known to be involved. Theoretical models usually assume a limited number of CMS genes with each a single restorer gene, while reality is more complex. In this study, it is shown that in the gynodioecious species Plantago coronopus two new CMS-restorer polymorphisms exist in addition to the two that were already known, which means four CMS-restorer systems at the species level. Furthermore, three CMS types were shown to co-occur within a single population. All new CMS types showed a multilocus system for male fertility restoration, in which both recessive and dominant restorer alleles occur. Our finding of more than two co-occurring CMS-restorer systems each with multiple restorer genes raises the question how this complex of male sterility systems is maintained in natural populations

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:11588
Deposited On:23 Nov 2011 01:00
Last Modified:31 Mar 2014 10:44

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