Genetic mapping and phylogenetic analysis reveal intraspecific variation in sex chromosomes of the Virginian strawberry

Publication Overview
TitleGenetic mapping and phylogenetic analysis reveal intraspecific variation in sex chromosomes of the Virginian strawberry
AuthorsWei N, Govindarajulu R, Tennessen JA, Liston A, Ashman TL
TypeJournal Article
Journal NameThe Journal of Heredity
Volume108
Issue7
Year2017
Page(s)731-739
CitationWei N, Govindarajulu R, Tennessen JA, Liston A, Ashman TL. Genetic mapping and phylogenetic analysis reveal intraspecific variation in sex chromosomes of the Virginian strawberry. The Journal of Heredity. 2017 Sep 27; 108(7):731-739.

Abstract

With their extraordinary diversity in sexual systems, flowering plants offer unparalleled opportunities to understand sex determination and to reveal generalities in the evolution of sex chromosomes. Comparative genetic mapping of related taxa with good phylogenetic resolution can delineate the extent of sex chromosome diversity within plant groups, and lead the way to understanding the evolutionary drivers of such diversity. The North American octoploid wild strawberries provide such an opportunity. We performed linkage mapping using targeted sequence capture for the subdioecious western Fragaria virginiana ssp. platypetala and compared the location of its sex-determining region (SDR) to those of two other (sub)dioecious species, the eastern subspecies, F. virginiana ssp. virginiana (whose SDR is at 0-5.5 Mb on chromosome VI of the B2 subgenome), and the sister species F. chiloensis (whose SDR is at 37 Mb on chromosome VI of the Av subgenome). Male sterility was dominant in F. virginiana ssp. platypetala and mapped to a chromosome also in homeologous group VI. Likewise, one major QTL for female fertility overlapped the male sterility region. However, the SDR mapped to a yet another subgenome (B1), and to a different location (13 Mb), but similar to the location inferred in one population of the naturally occurring hybrid between F. chiloensis and F. virginiana (F. x ananassa ssp. cuneifolia). Phylogenetic analysis of chromosomes across the octoploid taxa showed consistent subgenomic composition reflecting shared evolutionary history but also reinforced within-species variation in the SDR-carrying chromosome, suggesting either repeated evolution, or recent turnovers in SDR.

Features
This publication contains information about 6,763 features:
Feature NameUniquenameType
Fvb7_22591042Fvb7_22591042genetic_marker
Fvb7_22591082Fvb7_22591082genetic_marker
Fvb7_22641629Fvb7_22641629genetic_marker
Fvb7_22641666Fvb7_22641666genetic_marker
Fvb7_22641683Fvb7_22641683genetic_marker
Fvb7_22641748Fvb7_22641748genetic_marker
Fvb7_22641814Fvb7_22641814genetic_marker
Fvb7_22641818Fvb7_22641818genetic_marker
Fvb7_22641860Fvb7_22641860genetic_marker
Fvb7_22641881Fvb7_22641881genetic_marker
Fvb7_22664609Fvb7_22664609genetic_marker
Fvb7_22816668Fvb7_22816668genetic_marker
Fvb7_22816715Fvb7_22816715genetic_marker
Fvb7_22816764Fvb7_22816764genetic_marker
Fvb7_22816856Fvb7_22816856genetic_marker
Fvb7_22821702Fvb7_22821702genetic_marker
Fvb7_22821832Fvb7_22821832genetic_marker
Fvb7_22832453Fvb7_22832453genetic_marker
Fvb7_22832456Fvb7_22832456genetic_marker
Fvb7_22842083Fvb7_22842083genetic_marker
Fvb7_22842120Fvb7_22842120genetic_marker
Fvb7_22842160Fvb7_22842160genetic_marker
Fvb7_22855899Fvb7_22855899genetic_marker
Fvb7_22869901Fvb7_22869901genetic_marker
Fvb7_22869931Fvb7_22869931genetic_marker

Pages

Projects
This publication contains information about 1 projects:
Project NameDescription
Strawberry-sex_function-Ashman-2017
Featuremaps
This publication contains information about 1 maps:
Map Name
Strawberry-Fvp-F1-2017
Stocks
This publication contains information about 1 stocks:
Stock NameUniquenameType
Fragaria virginiana ssp. platypetalaFragaria virginiana ssp. platypetalaaccession