Multiple CMS-restorer gene polymorphism in gynodioecious Plantago coronopus

TY - JOUR

T1 - Multiple CMS-restorer gene polymorphism in gynodioecious Plantago coronopus

AU - Van Damme, J.M.M.

AU - Hundscheid, M.P.J.

AU - Ivanovic, S.

AU - Koelewijn, H.P.

N1 - Reporting year: 2004 Metis note: 3400; CTE; PVP ; TE file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs2004/VanDamme_ea_3400.pdf

PY - 2004

Y1 - 2004

N2 - 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

AB - 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

KW - NIOO/CTE/PVP

U2 - 10.1038/sj.hdy.6800490

DO - 10.1038/sj.hdy.6800490

M3 - Article

SN - 0018-067X

VL - 93

SP - 175

EP - 181

JO - Heredity

JF - Heredity

IS - 2

ER -