title: Genome-Wide Analysis of the Musa WRKY Gene Family: Evolution and Differential Expression during Development and Stress.
abstract: The WRKY gene family plays an important role in the development and stress responses in plants. As information is not available on the WRKY gene family in Musa species, genome-wide analysis has been carried out in this study using available genomic information from two species, Musa acuminata and Musa balbisiana. Analysis identified 147 and 132 members of the WRKY gene family in M. acuminata and M. balbisiana, respectively. Evolutionary analysis suggests that the WRKY gene family expanded much before the speciation in both the species. Most of the orthologs retained in two species were from the γ duplication event which occurred prior to α and β genome-wide duplication (GWD) events. Analysis also suggests that subtle changes in nucleotide sequences during the course of evolution have led to the development of new motifs which might be involved in neo-functionalization of different WRKY members in two species. Expression and cis-regulatory motif analysis suggest possible involvement of Group II and Group III WRKY members during various stresses and growth/development including fruit ripening process respectively.
authors.affiliation: Council of Scientific and Industrial Research-National Botanical Research InstituteLucknow, India; Academy of Scientific and Innovative ResearchNew Delhi, India.
authors.forename: Ridhi
authors.initials: R
authors.lastname: Goel
authors.affiliation: Council of Scientific and Industrial Research-National Botanical Research Institute Lucknow, India.
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Pandey
authors.affiliation: Council of Scientific and Industrial Research-National Botanical Research InstituteLucknow, India; Academy of Scientific and Innovative ResearchNew Delhi, India.
authors.forename: Prabodh K
authors.initials: PK
authors.lastname: Trivedi
authors.affiliation: Council of Scientific and Industrial Research-National Botanical Research InstituteLucknow, India; Academy of Scientific and Innovative ResearchNew Delhi, India.
authors.forename: Mehar H
authors.initials: MH
authors.lastname: Asif
keywords: WRKY gene family; abiotic stress; banana; differential gene expression; fruit ripening