This journal has not been published yet.

SgPHR1-SgPAE1 module modulates root growth and increases low phosphorus tolerance in Stylosanthes guianensis

Clicks: 19
ID: 328497
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 #409 of 653 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 653 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
Phosphorus (P) deficiency severely limits agricultural productivity in tropical acid soils. Stylosanthes guianensis (stylo), a vital forage legume in the tropics, exhibits high tolerance to low P stress. While numerous phosphate (Pi) starvation response genes have been documented in stylo, its underlying regulatory mechanisms remain unclear. In this study, a coordinated root morphological plasticity was observed in the response of P-tolerant stylo genotypes to P deficiency, achieved through enhanced root growth. SgPHR1 (Phosphate Starvation Response 1) was characterized as a Pi-starvation-induced MYB transcription factor localized to the nucleus. Transgenic studies revealed that SgPHR1 overexpression increased plant dry weight and Pi uptake, especially under low-P conditions, whereas SgPHR1 knockdown suppressed these traits in stylo, likely by modulating root growth. RNA-seq analysis identified many downstream targets of SgPHR1, including SgPAE1, which encodes a pectin acetylesterase. Biochemical analyses confirmed SgPHR1 activated the transcription of SgPAE1 by directly binding to the P1BS cis-element in its promoter region. Furthermore, SgPAE1 overexpression enhanced low-P tolerance by promoting root growth and P accumulation, while its suppression impaired these adaptive responses. Further analysis demonstrated that SgPAE1 mediates pectin deacetylation, likely contributing to root cell wall modification. Notably, genes encoding cell wall-modifying enzymes were significantly enriched in roots of SgPAE1-overexpressing plants under P deficiency. Collectively, this study establishes the SgPHR1-SgPAE1 transcriptional module as a key regulatory framework for low-P adaptation in stylo, which is probably through linking Pi signaling to root cell wall remodeling, thereby optimizing root growth and Pi acquisition.
Reference Key
openalex_W7212235120 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Jifu Li, Liting Liu, 周红明, Ye Miao, Linjie Wang, Pandao Liu, Rongshu Dong, Guodao Liu, Xiaohui Mo, Zhijian Chen
Are you one of these authors? Claim your profile
Journal Plant physiology and biochemistry : PPB
Year 2026
DOI
10.1093/plphys/kiag676
URL
https://doi.org/10.1093/plphys/kiag676
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.