Parental legacy versus regulatory innovation in salt stress responsiveness of allopolyploid cotton (Gossypium) species.

ABSTRACT: Polyploidy provides an opportunity for evolutionary innovation and species diversification, especially under stressful conditions. In allopolyploids, the conditional dynamics of homoeologous gene expression can be either inherited from ancestral states pre-existing in the parental diploids or novel upon polyploidization, the latter potentially permitting a wider range of phenotypic responses to stresses. To gain insight into regulatory mechanisms underlying the diversity of salt resistance in Gossypium species, we compared global transcriptomic responses to modest salinity stress in two allotetraploid (AD-genome) cotton species, Gossypium hirsutum and G. mustelinum, relative to their model diploid progenitors (A-genome and D-genome). Multivariate and pairwise analyses of salt-responsive ch

SUBMITTER: Dong Y 

PROVIDER: S-EPMC9540634 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature