Tuning starch granule size distributions in durum wheat using genetic variation at a single locus.

ABSTRACT: Different missense mutations in TtMRC-A1 can be used to fine-tune granule size distributions in durum wheat grains, creating useful alterations in starch properties. The size distribution of starch granules in wheat grains influences bread- and pasta-making quality, as well as nutritional properties. Here, we demonstrate that in durum wheat, wide variation in starch granule size distributions can be induced through missense mutations at a single genetic locus encoding the MYOSIN RESEMBLING CHLOROPLAST PROTEIN on chromosome 6A (TtMRC-A1). We isolated 29 independent TILLING mutants in durum cultivar Kronos, each harbouring a different missense mutation that causes an amino acid substitution in the MRC protein. Compared to the B-type granule content of wild-type Kronos (24%), six of the misse

SUBMITTER: Fahy B 

PROVIDER: S-EPMC12379660 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature