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The enhancement of grain chalkiness tolerance and weight by OsS40-2 mutation is linked to source-sink homeostasis in a developmentally dependent manner.

Plant physiology - 2 Jun 2026

Zhang Han, Shi Ximiao, Chen Ruitao, Wen Yumei, Xie Yakun, Zhang Yu, Wu Binghua, Miao Ying, Zheng Xiangzi, Lin Wenfang

Abstract excerpt

Grain chalkiness is attributable to polygenic traits, including inadequate photosynthate supply, imbalanced source-sink dynamics, or restricted biosynthesis of storage materials. Nevertheless, the precise regulatory mechanism of chalkiness formation remains to be elucidated. In this study, a CRISPR/Cas9 gene editing mutant (oss40-2cr) of a novel transcription factor OsS40-2 in rice exhibited a longer and...

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PMID: 42243638
DOI: 10.1093/plphys/kiag339

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026.

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