Rice phosphate transporter reduces the low phosphate response through jasmonate signaling

Clicks: 1
ID: 314747
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

Ranked #57 of 94 articles by views in plant and cell physiology

Most read Least read

Bar heights use a square-root scale.

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
Abstract Phosphorus (P) is an essential macronutrient for plant growth, and its deficiency severely limits crop productivity. The PHOSPHATE1 (PHO1) protein family, defined by an N-terminal SPX domain, four transmembrane (4TM) domains, and a C-terminal EXS domain, mediates phosphate (Pi) loading into the xylem for root-to-shoot transport. In rice, OsPHO1;2 is critical for Pi export, and loss-of-function mutants exhibit severe growth retardation and Pi deficiency symptoms despite sufficient external Pi. To dissect the functional contributions of PHO1 domains beyond Pi transport, we generated CRISPR/Cas9 rice lines expressing either the EXS domain containing part of the SPX domain (S-EXS) or the 4TM+EXS domains (T-EXS) of OsPHO1;2. Phenotypic analyses under Pi-sufficient and Pi-deficient conditions revealed that S-EXS lines displayed improved early growth compared to ospho1;2 mutants, despite similar shoot Pi levels. These plants exhibited reduced jasmonic acid accumulation and attenuated phosphate starvation responses, resembling wild-type hormone profiles. In contrast, T-EXS lines mirrored the growth defects of ospho1;2 mutants. Transcriptome profiling confirmed that defense and phosphate starvation pathways were less activated in S-EXS lines relative to mutants. However, both S-EXS and T-EXS lines retained seed development defects and reduced seed phosphorus content, consistent with ospho1;2 phenotypes. Heterozygous plants carrying one functional OsPHO1;2 allele exhibited normal growth and seed development, confirming the recessive nature of the mutation. Collectively, these findings demonstrate that the S-EXS domain of OsPHO1;2 promotes plant growth independently of Pi transport by modulating jasmonate signaling and suppressing phosphate starvation responses. This highlights a signaling role for PHO1 domains, offering new insights into Pi homeostasis and potential strategies for breeding Pi-efficient crops
Reference Key
openalex_W7162197152 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Balaji Mani, Kanika Maurya, Lokesh Verma, Priya Gupta, Pawandeep Singh Kohli, Gagan Gupta, Aime Jaskolowski, Yves Poirier, Jitender Giri
Journal plant and cell physiology
Year 2026
DOI
10.1093/pcp/pcag070
URL
https://doi.org/10.1093/pcp/pcag070
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.