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Mutation in rice enzyme triggers unexpected metabolic changes, altering seed composition.

Proceedings of the National Academy of Sciences
Inactivation of rice starch branching enzyme IIb triggers broad and unexpected changes in metabolism by transcriptional reprogramming
Can Baysal, Wenshu He, Margit Drapal, Gemma Villorbina, Vicente Medina, Teresa Capell, G. S. Khush, Changfu Zhu, Paul D. Fraser, Paul Christou

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Mutating a gene in rice that affects starch branching triggers significant changes in metabolism. This mutation leads to alterations in starch properties, seed shape, and gene expression related to starch production in the endosperm and leaf. It also causes a wide-ranging impact on primary and secondary metabolism in the endosperm, resulting in the accumulation of sugars, fatty acids, amino acids, and phytosterols.