Two large reciprocal translocations characterized in the disease resistance-rich burmannica genetic group of Musa acuminata.

ABSTRACT:

Background and aims

Banana cultivars are derived from hybridizations involving Musa acuminata subspecies. The latter diverged following geographical isolation in distinct South-east Asian continental regions and islands. Observation of chromosome pairing irregularities in meiosis of hybrids between these subspecies suggested the presence of large chromosomal structural variations. The aim of this study was to characterize such rearrangements.

Methods

Marker (single nucleotide polymorphism) segregation in a self-progeny of the 'Calcutta 4' accession and mate-pair sequencing were used to search for chromosomal rearrangements in comparison with the M. acuminata ssp. malaccensis genome reference sequence. Signature segment junctions of the revealed chromosome structures were ide

SUBMITTER: Dupouy M 

PROVIDER: S-EPMC6758587 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature