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Thermo-sensitive tasiRNA biogenesis integrates temperature signals to maintain spikelet patterning in rice.

The New phytologist - 1 Jun 2026

Zhang Yuhan, Wang Yubo, Liu Yuqing, Zhang Runjia, Xu Shilong, Shang Fei, Fang Zhiming, Pan Yu, Zhao Shanshan, Yang Yuanzhu, Wu Jianguo, Benhamed Moussa, Zhou Ming

Abstract excerpt

Rising temperatures threaten crop yields by disrupting panicle and spikelet development, yet the molecular sensors of thermal stress remain unknown. Through a field-based ethyl methanesulfonate (EMS) screen, we identified two rice mutants, tspd2 and tspd3, that show dramatic temperature-sensitive defects in spikelet polarity. Genetic mapping revealed lesions in two core small RNA (sRNA) factors: a weak OsDCL4...

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PMID: 42032902
DOI: 10.1111/nph.71199

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