The MaPUB23-mediated degradation of the MaHSFB1-MaHDA2 counteracts high temperature-inhibited chlorophyll degradation in banana

Clicks: 9
ID: 338955
2026
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #386 of 389 articles by views in The Plant cell

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 389 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Banana fruits ripening at or above 30 °C soften but retain a green peel. Elucidating the mechanism underlying this high temperature-induced repression of chlorophyll catabolism would help to improve the marketability of bananas. Toward this end, we compared banana fruits ripened at 20 °C and 30 °C using transcriptome analysis, revealing several E3 ubiquitin ligases repressed in green fruits ripened at 30 °C. Among them, only the U-box type E3 ligase MaPUB23 promoted chlorophyll degradation when transiently overexpressed in tobacco leaves. MaPUB23 interacted with and targeted MaHSFB1 and MaHDA2 for ubiquitination and proteasomal degradation. MaHSFB1 specifically interacted with and recruited MaHDA2 to the promoters of chlorophyll catabolic genes (CCGs), transcriptionally repressed these genes via decreased histone acetylation, and inhibited chlorophyll degradation. However, high temperature attenuated the MaPUB23-mediated degradation of MaHSFB1 and MaHDA2, which enhanced the MaHSFB1-MaHDA2-mediated repression of CCGs. These results suggest that high temperature attenuates the MaPUB23-mediated proteasomal degradation of MaHSFB1-MaHDA2, leading to green ripening in banana fruit. This study thus illustrates a novel, dynamic regulatory module controlling the high temperature-induced repression of chlorophyll catabolism in banana fruits. Elucidating this mechanism provides a theoretical basis for strategies to manage temperature-induced fruit quality deterioration.
Reference Key
openalex_W7225329371 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wei Wei, Jian‐fei Kuang, Wang‐jin Lu, Jianye Chen, Wei Shan
Are you one of these authors? Claim your profile
Journal The Plant cell
Year 2026
DOI
10.1093/plcell/koag343
URL
https://doi.org/10.1093/plcell/koag343
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.