‘Inconstant males' and the maintenance of labilesex expression in subdioecious plants.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

‘Inconstant males' and the maintenance of labilesex expression in subdioecious plants. / Ehlers, Bodil; Bataillon, Thomas.

I: New Phytologist, 2007.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

APA

CBE

MLA

Vancouver

Author

Bibtex

@article{7e8007c0ba8811dbbee902004c4f4f50,
title = "{\textquoteleft}Inconstant males' and the maintenance of labilesex expression in subdioecious plants.",
abstract = "Here, we evaluate the role of pollen limitation and selfing in the maintenance of labile sex expression in subdioecious plant species.We used a literature survey to explore which factors correlated with a significant occurrence of hermaphrodites in dioecious species. We developed models to explore the selective maintenance of labile sex expression. The models had similar ecological assumptions but differed in the genetic basis of sex lability.We found that a significant frequency of hermaphrodites was associated with animal pollination, and that hermaphrodites were {\textquoteleft}inconstant' males with perfect flowers, suggesting evolution through the gynodioecious pathway. Models showed that a modifier converting pure males into inconstant males could be maintained under a wide range of reduction in both male and female fitness. Pollen limitation and self-fertilization facilitated invasion of the modifier. Depending on the genetics of sex determination, we found pure dioecy, stable subdioecy (trioecy), and situations where inconstant males coexisted with either pure females or pure males. Under selfing and pollen limitation, certain conditions selected for inconstant males which will drive populations to extinction.We discuss our results in relation to the evolution towards, and the breakdown of, dioecy, and the ecological and evolutionary implications of labile sex expression.",
author = "Bodil Ehlers and Thomas Bataillon",
year = "2007",
doi = "10.1111/j.1469-8137.2007.01975.x",
language = "English",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Academic Press",

}

RIS

TY - JOUR

T1 - ‘Inconstant males' and the maintenance of labilesex expression in subdioecious plants.

AU - Ehlers, Bodil

AU - Bataillon, Thomas

PY - 2007

Y1 - 2007

N2 - Here, we evaluate the role of pollen limitation and selfing in the maintenance of labile sex expression in subdioecious plant species.We used a literature survey to explore which factors correlated with a significant occurrence of hermaphrodites in dioecious species. We developed models to explore the selective maintenance of labile sex expression. The models had similar ecological assumptions but differed in the genetic basis of sex lability.We found that a significant frequency of hermaphrodites was associated with animal pollination, and that hermaphrodites were ‘inconstant' males with perfect flowers, suggesting evolution through the gynodioecious pathway. Models showed that a modifier converting pure males into inconstant males could be maintained under a wide range of reduction in both male and female fitness. Pollen limitation and self-fertilization facilitated invasion of the modifier. Depending on the genetics of sex determination, we found pure dioecy, stable subdioecy (trioecy), and situations where inconstant males coexisted with either pure females or pure males. Under selfing and pollen limitation, certain conditions selected for inconstant males which will drive populations to extinction.We discuss our results in relation to the evolution towards, and the breakdown of, dioecy, and the ecological and evolutionary implications of labile sex expression.

AB - Here, we evaluate the role of pollen limitation and selfing in the maintenance of labile sex expression in subdioecious plant species.We used a literature survey to explore which factors correlated with a significant occurrence of hermaphrodites in dioecious species. We developed models to explore the selective maintenance of labile sex expression. The models had similar ecological assumptions but differed in the genetic basis of sex lability.We found that a significant frequency of hermaphrodites was associated with animal pollination, and that hermaphrodites were ‘inconstant' males with perfect flowers, suggesting evolution through the gynodioecious pathway. Models showed that a modifier converting pure males into inconstant males could be maintained under a wide range of reduction in both male and female fitness. Pollen limitation and self-fertilization facilitated invasion of the modifier. Depending on the genetics of sex determination, we found pure dioecy, stable subdioecy (trioecy), and situations where inconstant males coexisted with either pure females or pure males. Under selfing and pollen limitation, certain conditions selected for inconstant males which will drive populations to extinction.We discuss our results in relation to the evolution towards, and the breakdown of, dioecy, and the ecological and evolutionary implications of labile sex expression.

U2 - 10.1111/j.1469-8137.2007.01975.x

DO - 10.1111/j.1469-8137.2007.01975.x

M3 - Journal article

C2 - 17335509

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

ER -