Regulation of Zn and Fe transporters by the GPC1 gene during early wheat monocarpic senescence.

ABSTRACT:

Background

During wheat senescence, leaf components are degraded in a coordinated manner, releasing amino acids and micronutrients which are subsequently transported to the developing grain. We have previously shown that the simultaneous downregulation of Grain Protein Content (GPC) transcription factors, GPC1 and GPC2, greatly delays senescence and disrupts nutrient remobilization, and therefore provide a valuable entry point to identify genes involved in micronutrient transport to the wheat grain.

Results

We generated loss-of-function mutations for GPC1 and GPC2 in tetraploid wheat and showed in field trials that gpc1 mutants exhibit significant delays in senescence and reductions in grain Zn and Fe content, but that mutations in GPC2 had no significant effect on these tra

SUBMITTER: Pearce S 

PROVIDER: S-EPMC4302714 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature