Low Dosage of <scp>ABA</scp> Enhances Arbuscule Formation and Recovers the Inhibitory Effect of Low <scp>pH</scp> on This Process
M identified as the optimal concentration for maximizing mycorrhizal colonization. (3) Both low pH and ABA-deficient mutants significantly inhibited mycorrhizal colonization, alkaline phosphatase activity, and the expression of genes related to arbuscular development. However, exogenous ABA did not significantly affect the expression of genes associated with arbuscular function. Low concentrations of ABA could restore the inhibition of arbuscule development and function caused by low pH and ABA-deficient mutants. Additionally, low pH significantly inhibited the ABA content in mycorrhizae, while exogenous ABA treatment significantly increased the ABA content in mycorrhizae. Our research results indicate that low dosage of ABA enhances arbuscule formation and function, and recovers the inhibitory effect of low pH on this process. Low pH may regulate arbuscule development and function by modulating ABA in roots, and ABA may regulate mycorrhizal development by affecting lipid synthesis and transport.
Authors
- Qing Yao (ORCID: https://orcid.org/0000-0003-3449-6166)
- Ning Wang (ORCID: https://orcid.org/0000-0001-5406-4286)
- Zengwei Feng (ORCID: https://orcid.org/0000-0002-8222-5427)
- Wei Zhang
- Xiaodi Liu
Institutions
- South China Agricultural University (CN)
- Guangdong Research Institute of Water Resources and Hydropower (CN)
- Ministry of Agriculture (FJ)
Publication Details
- Journal
- Plant-Environment Interactions
- Published
- 2026-04-01
- DOI
- https://doi.org/10.1002/pei3.70124
- Primary Topic
- Mycorrhizal Fungi and Plant Interactions
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Department of Education of Guangdong Province