Structural variation

Musa chromosome structure database

Martin et al, 2017 : Evolution of the Banana Genome (Musa acuminata) Is Impacted by Large Chromosomal Translocations.

Baurens et al., 2018 : Recombination and Large Structural Variations Shape Interspecific Edible Bananas Genomes

Name	Accession Name	Ploidy	Genome ^α	Section	Species/Phylogenetic cluster ^β	Status ^γ	1-4	3-8	1-7	2-8	1-9	7-8	1-3	inv5

Legend:

^α Genomic composition.
- A: Musa acuminata
- B: Musa balbisiana
- S: Musa schizocarpa
- T: Musa textilis
- E: Ensete
The number of letters refers to ploidy. e.g. AA: diploid of Musa acuminata; AAB: triploide with two A haplotypes and one B haplotype.
^β AA cultivar classification was based on tree proposed by Perrier et al. 2011.
^γ Accession status.
- wild accession (seeded)
- cultivar (unseeded)
- hybrid produced at CIRAD breeding program in Guadeloupe
Wild and cultivar status in banana is determined based on their ability to produce seed as one of the main domestication syndrome is loss of fertility to produce seedless fruits.
^δ Haplotype numbers with the translocated structure
- ^* Potentially a recombination occured in centromeric region.
- ^** Unclear status, 2 markers suggesting the alternate structure versus 6. Requires 4 recombinations. Anyway, according to last marker, homozygous for the reference structure.
- ^*** DNA from ‘Mlali Mshia Wa Komba’ from Mayotte and ‘Ambihy_P1’ from Madagascar were obtained courtesy of X. Perrier. More details at Perrier et al., Annals of Botany, 2018
- ^b Signal difficult to interpret because many shared alleles with accesssion with the alternate structure.
- ^c Cytogenetic evidence
- ^d Deduced from the phylogenetic position relative to Musa balbisiana (Martin et al., 2023) that suggest that the inversion arose in Musa acuminata/Musa schizocarpa lineage.