A highly mutable GST is essential for bract colouration in Euphorbia pulcherrima Willd. Ex Klotsch.

ABSTRACT:

Background

Mutation breeding is an extraordinary tool in plant breeding to increase the genetic variability, where mutations in anthocyanin biosynthesis are targets to generate distinctive phenotypes in ornamental species. In poinsettia, ionizing radiation is routinely applied in breeding programs to obtaining a range of colours, with nearly all pink and white varieties being obtained after γ- or X-ray mutagenesis of red varieties. In the present study we performed a thorough characterization of a potential mutagenesis target gene as the main responsible for the 'white paradox' in poinsettia.

Results

We identified a GST gene in poinsettia (Bract1) as an essential factor for the expression of anthocyanin-based red colouration of bracts, which presents a high phylogenetic simi

SUBMITTER: Vilperte V 

PROVIDER: S-EPMC7988969 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature