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Systems genetics for maize drought tolerance

ABSTRACT: The evolution of maize yields under drought is of particular concern in the context of climate change and human population growth. To better understand the mechanisms associated with the genetic polymorphisms underlying the variations of traits related to drought tolerance, we used a systems genetics approach integrating high-throughput phenotypic, proteomics and genomics data acquired on 254 maize hybrids grown under two watering conditions. We show that the genetic architecture of protein abundances depends on protein function and that water deficit strongly remodeled the proteome and induced a reprogramming of the genetic control of the abundances of proteins involved in drought and stress response. These findings bring several lines of evidence supporting candidate genes at many loci and provide novel insight into the molecular mechanisms of drought tolerance.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Zea Mays (ncbitaxon:4577)

SUBMITTER: Melisande Blein-Nicolas

PROVIDER: MSV000085594 | MassIVE | Tue Jun 16 04:04:00 BST 2020

SECONDARY ACCESSION(S): PXD019804

REPOSITORIES: MassIVE

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