LsMybW-encoding R2R3-MYB transcription factor is responsible for a shift from black to white in lettuce seed.

ABSTRACT:

Key message

We identified LsMybW as the allele responsible for the shift in color from black to white seeds in wild ancestors of lettuce to modern cultivars. Successfully selected white seeds are a key agronomic trait for lettuce cultivation and breeding; however, the mechanism underlying the shift from black-in its wild ancestor-to white seeds remains uncertain. We aimed to identify the gene/s responsible for white seed trait in lettuce. White seeds accumulated less proanthocyanidins than black seeds, similar to the phenotype observed in Arabidopsis TT2 mutants. Genetic mapping of a candidate gene was performed with double-digest RAD sequencing using an F₂ population derived from a cross between "ShinanoPower" (white) and "Escort" (black). The white seed trait was contr

SUBMITTER: Seki K 

PROVIDER: S-EPMC10781863 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature