Identification of candidate genes associated with leaf senescence in cultivated sunflower (Helianthus annuus L.).

ABSTRACT: Cultivated sunflower (Helianthus annuus L.), an important source of edible vegetable oil, shows rapid onset of senescence, which limits production by reducing photosynthetic capacity under specific growing conditions. Carbon for grain filling depends strongly on light interception by green leaf area, which diminishes during grain filling due to leaf senescence. Transcription factors (TFs) regulate the progression of leaf senescence in plants and have been well explored in model systems, but information for many agronomic crops remains limited. Here, we characterize the expression profiles of a set of putative senescence associated genes (SAGs) identified by a candidate gene approach and sunflower microarray expression studies. We examined a time course of sunflower leaves undergoing natura

SUBMITTER: Moschen S 

PROVIDER: S-EPMC4128711 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature