The AcMYB15-AcWRKY24 module coordinates lignin and salicylic acid accumulation during kiwifruit resistance to bacterial canker

Clicks: 12
ID: 331534
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 #607 of 650 articles by views in Plant physiology and biochemistry : PPB

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 650 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
Plants coordinate phenylpropanoid metabolism across different tissues to defend against pathogens, but the underlying transcriptional mechanisms remain unclear. Here, we identify the kiwifruit transcription factor AcMYB15 as a regulator that lignin deposition and salicylic acid (SA) accumulation, conferring bacterial canker resistance in kiwifruit through a tissue-specific regulatory module during Pseudomonas syringae pv. actinidiae (Psa) infection. In leaves, AcMYB15 directly binds to the CAACCC motif in the AcPAL1 promoter to activate its transcription, promoting localized lignin accumulation. In stems, which are the primary conduits for systemic Psa colonization, AcMYB15 forms a protein complex with the stem-enriched transcription factor AcWRKY24. Formation of the AcMYB15-AcWRKY24 protein complex enhanced transcriptional activation of the stem-prevalent AcPAL2 by strengthening its DNA-binding preferences for the CAACCA motif. Functional characterization indicates that AcPAL1 and AcPAL2 exert distinct defensive roles: AcPAL1 overexpression primarily leads to increased lignin deposition, whereas AcPAL2 overexpression predominantly enhances SA accumulation. Therefore, the AcMYB15-AcWRKY24 synergistic module provides a coordinated defense mechanism in the stem by simultaneously promoting lignin deposition and SA accumulation, thereby conferring enhanced resistance to bacterial canker. Our study uncovers a two-tiered transcriptional mechanism that coordinately regulates the tissue-specific accumulation of lignin and SA during Psa infection. These findings provide a solid theoretical basis and potential genetic resources for the genetic improvement and molecular breeding of disease-resistant fruit crops.
Reference Key
openalex_W7220373777 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Shunyuan Wu, Wenli Yue, Wanjun Chai, Jilong Cheng, Ge Guo, Dongheng Hui, Lili Huang, Gongyou Chen, Xueren Yin, Yue Huang, Pu Liu
Are you one of these authors? Claim your profile
Journal Plant physiology and biochemistry : PPB
Year 2026
DOI
10.1093/plphys/kiag737
URL
https://doi.org/10.1093/plphys/kiag737
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.