D-amino acid aminotransferase1 regulates grain chalkiness in rice by modulating endoplasmic reticulum stress response

Proceedings of the National Academy of Sciences, Volume 123, Number 10, March 2026.
ImportanceImproving grain appearance is a priority for rice breeding because chalkiness significantly reduces commercial value. Here, we identify a previously unrecognized metabolic pathway involving D-amino acids that regulates this trait. We show that the D-…