Affordable Access

deepdyve-link
Publisher Website

Evolution of the Banana Genome (Musa acuminata) Is Impacted by Large Chromosomal Translocations.

Authors
  • Martin, guillaume
  • Carreel, Françoise
  • Coriton, Olivier
  • Hervouet, Catherine
  • Cardi, Céline
  • Derouault, Paco
  • ROQUES, Daniéle
  • Salmon, Frederic
  • Rouard, Mathieu
  • Sardos, Julie
  • Labadie, Karine
  • Baurens, Franc-Christophe
  • D'Hont, Angélique
Publication Date
Jan 01, 2017
Identifiers
DOI: 10.1093/molbev/msx164
PMID: 28575404
OAI: oai:HAL:hal-02627305v1
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

Most banana cultivars are triploid seedless parthenocarpic clones derived from hybridization between Musa acuminata subspecies and sometimes M. balbisiana. M. acuminata subspecies were suggested to differ by a few large chromosomal rearrangements based on chromosome pairing configurations in intersubspecies hybrids. We searched for large chromosomal rearrangements in a seedy M. acuminata ssp. malaccensis banana accession through mate-pair sequencing, BAC-FISH, targeted PCR and marker (DArTseq) segregation in its progeny. We identified a heterozygous reciprocal translocation involving two distal 3 and 10 Mb segments from chromosomes 01 and 04, respectively, and showed that it generated high segregation distortion, reduced recombination and linkage between chromosomes 01 and 04 in its progeny. The two chromosome structures were found to be mutually exclusive in gametes and the rearranged structure was preferentially transmitted to the progeny. The rearranged chromosome structure was frequently found in triploid cultivars but present only in wild malaccensis ssp. accessions, thus suggesting that this rearrangement occurred in M. acuminata ssp. malaccensis. We propose a mechanism for the spread of this rearrangement in Musa diversity and suggest that this rearrangement could have played a role in the emergence of triploid cultivars.

Report this publication

Statistics

Seen <100 times