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April 8, 2026The Plant JournalOpen Access

Activation of ethylene biosynthetic gene MaACS1 by RING ‐ H2 ‐type E3 ligase MaRHA2A1 ‐mediated ubiquitin‐proteasomal degradation of MaMYB73 during banana fruit ripening

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Authors

TLTing‐Ting LuoWSWen SongHTHai‐Ke Tan

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Overview

Genome-wide investigation reveals MaMYB73 regulates ethylene production in bananas, suggesting new regulatory mechanisms.

Key Points

  • This research aims to understand how MaMYB73 regulates ethylene biosynthesis in bananas and its interaction with MaRHA2A1.
  • Genome-wide identification of ACS genes in bananas
  • Molecular dynamics for binding analysis
  • Comparative genomics to identify orthologs in tomato
  • DNase-seq and DAP-seq to investigate promoter binding
  • Virus-induced gene silencing (VIGS) to assess gene function
  • MaMYB73 directly binds the promoter of MaACS1.
  • Overexpression of MaMYB73 decreases MaACS1 expression and ethylene production.
  • VIGS of MaMYB73 increases MaACS1 expression and ethylene production in bananas.
  • MaRHA2A1 targets MaMYB73 for ubiquitination, accelerating ethylene production.

Cite This Study

Luo et al. (2026) studied this question.

synapsesocial.com/papers/69d5f0d774eaea4b11a7a371https://doi.org/10.1111/tpj.70851
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