Genetic variation for pseudo‐self‐compatibility in self‐incompatible populations of Leavenworthia alabamica (Brassicaceae)
نویسندگان
چکیده
منابع مشابه
The evolution of self-compatibility in geographically peripheral populations of Leavenworthia alabamica (Brassicaceae).
Self-compatibility and adaptations to self-fertilization are often found in plant populations at the periphery of species' ranges or on islands. Self-compatibility may predominate in these environments because it provides reproductive assurance when pollinators or availability of mates limits seed production. This possibility was studied in Leavenworthia alabamica, a flowering plant endemic to ...
متن کاملMixed mating in a recently derived self-compatible population of Leavenworthia alabamica (Brassicaceae).
UNLABELLED PREMISE OF THE STUDY A mixture of outcrossing and selfing is often observed in plant populations. Although mixed mating is ubiquitous, it has several potential evolutionary explanations. Mixed mating may be actively maintained by selection, passively determined by the pollination environment, or a transitional stage during the evolution of self-fertilization. • METHODS We studie...
متن کاملDemographic signatures accompanying the evolution of selfing in Leavenworthia alabamica.
The evolution of selfing from outcrossing is a common transition, yet little is known about the mutations and selective factors that promote this shift. In the mustard family, single-locus self-incompatibility (SI) enforces outcrossing. In this study, we test whether mutations causing self-compatibility (SC) are linked to the self-incompatibility locus (S-locus) in Leavenworthia alabamica, a sp...
متن کاملGenetic diversity in Leavenworthia populations with different inbreeding levels.
Levels of neutral genetic diversity within and between populations were compared between outcrossing (self-incompatible) and inbreeding populations in the annual plant genus Leavenworthia. Two taxonomically independent comparisons are possible, since self-incompatibility has been lost twice in the group of species studied. Within inbred populations of L.uniflora and L.crassa, no DNA sequence va...
متن کاملLeavenworthia (Brassicaceae) Revisited: Testing Classic Systematic and Mating System Hypotheses
The genus Leavenworthia (Brassicaceae) has long been a focus of research on mating system evolution, due to the presence of both self-incompatible and self-compatible species within the genus. A phylogenetic hypothesis invoking multiple transitions between mating systems has been proposed for Leavenworthia, but this hypothesis has not been subject to molecular phylogenetic analysis. DNA sequenc...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2016
ISSN: 0028-646X,1469-8137
DOI: 10.1111/nph.14109