Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2025

SlPLT6 controls ripening initiation and quality traits through modulation of histone acetylation and methylation in tomato

Xiaoqing He
  • Fonction : Auteur
Yi Wu
  • Fonction : Auteur
Peng Shu
  • Fonction : Auteur
Yanpeng Yin
  • Fonction : Auteur
Heng Deng
  • Fonction : Auteur
Shiyu Ying
Mengbo Wu
Panpan Zhao
Tengbo Huang
Yang Zhang
Don Grierson
Zhenhui Zhong
  • Fonction : Auteur
Yiguo Hong
Mondher Bouzayen
Mingchun Liu

Résumé

Improving fruit growth and quality without compromising yield is a highly sought-after goal in crop breeding. Here, we report that an EAR motif-containing transcription factor SlPLT6 controls the onset of fruit ripening and quality traits in tomato. SlPLT6 knockout caused precocious ripening initiation and enhanced fruit qualities without penalizing yield in two tomato cultivars. SlPLT6 represses genes involved in ripening initiation and major quality traits by directly binding to their promoters. Moreover, SlPLT6 connects two repressive mechanisms by recruiting Histone Deacetylase 1 via its C-terminal EAR motif and LIKE HETEROCHROMATIN PROTEIN 1b through the first AP2 domain. Furthermore, Sly-miR159 acts upstream of SlPLT6 to release its repression. Taken together, our data provide insights into the operating mode of SlPLT6 in modulating fruit ripening and quality traits and define a unique gene for targeted crop improvement aimed at upgrading fruit quality without yield penalty.

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hal-05240851 , version 1 (16-02-2026)

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Xiaoqing He, Yi Wu, Peng Shu, Yanpeng Yin, Heng Deng, et al.. SlPLT6 controls ripening initiation and quality traits through modulation of histone acetylation and methylation in tomato. Proceedings of the National Academy of Sciences of the United States of America, 2025, 122 (24), ⟨10.1073/pnas.2503732122⟩. ⟨hal-05240851⟩
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