The maize premature senesence2 encodes for PHYTOCHROME-DEPENDENT LATE-FLOWERING and its expression modulation improves agronomic traits under abiotic stresses.

ABSTRACT: Among the various abiotic stresses, water and nitrogen are major stress factors that limit crop productivity worldwide. Since leaf nutrients remobilization during leaf senescence might impact response to abiotic stress in crops, we undertook a forward screen of the Mutator-active approach to identify premature senescence loci in maize. A mutant line isolated from a cross between a Pioneer Brand elite line and a public Mutator-active material, designated premature senescence2 (pre2), expressed leaf senescence during flower initiation. The Pre2 gene encodes PHYTOCHROME-DEPENDENT LATE-FLOWERING (PHL) protein, a nuclear receptor coactivator. The pre2-1 mutant allele was not a null mutation but produced a functional wild-type transcript along wit

SUBMITTER: Gupta R 

PROVIDER: S-EPMC7771657 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature