Genome-wide analysis of expansin superfamily in wild Arachis discloses a stress-responsive expansin-like B gene.

ABSTRACT: Expansins are plant cell wall-loosening proteins involved in adaptive responses to environmental stimuli and various developmental processes. The first genome-wide analysis of the expansin superfamily in the Arachis genus identified 40 members in A. duranensis and 44 in A. ipaënsis, the wild progenitors of cultivated peanut (A. hypogaea). These expansins were further characterized regarding their subfamily classification, distribution along the genomes, duplication events, molecular structure, and phylogeny. A RNA-seq expression analysis in different Arachis species showed that the majority of these expansins are modulated in response to diverse stresses such as water deficit, root-knot nematode (RKN) infection, and UV exposure, with an expansin-like B gene (AraEXLB8) displaying a highly d

SUBMITTER: Guimaraes LA 

PROVIDER: S-EPMC5437183 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature