Alterations to hormone regulated defense and stress response networks contribute to the greater growth of Arabidopsis F1 hybrids

ABSTRACT: Heterosis, or hybrid vigor, has been exploited in agriculture to deliver increases in crop yields for over a century, yet the molecular basis is not well understood We have studied the transcriptomes of 15 day old seedlings from intraspecific Arabidopsis hybrids with varying levels of heterosis and their parental lines in order to identify drivers of heterosis. The patterns of altered gene expression in the hybrids point to a reduction in basal defense levels that could reflect the antagonism between plant immunity and plant growth. Associated with this theme are changes to the salicylic acid and auxin regulated networks which are known to control abiotic and biotic defense responses as well as being important regulators of plant growth. Increased auxin response correlates with the het

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Michael Groszmann 

PROVIDER: E-GEOD-64475 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress