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Phosphorus starvation-responsive factor OsWRKY74 promotes starch accumulation during rice grain filling under low phosphorus conditions by regulating OsSWEET11.

Plant cell reports - 29 Jul 2026

Yang Shanshan, Liu Jialin, Shen Qingjie, Hu Zhi, Li Yifan, Huang Xu, Cui Mengyuan, Sun Yafei, Kant Surya, Sun Shubin

Abstract excerpt

KEY MESSAGE: In rice, OsWRKY74 transcriptionally regulates OsSWEET11 under low phosphorus to promote starch accumulation during grain filling, thereby contributing to yield-related traits. Phosphorus availability is closely associated with starch accumulation during rice grain filling, yet how phosphorus starvation signaling influences this process at the transcriptional level remains unclear. Although WRKY...

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PMID: 42525257
DOI: 10.1007/s00299-026-03898-3

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HP

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