ArticlePlant communications2025
ABA promotes fatty acid biosynthesis and transport to boost arbuscular mycorrhizal symbiosis in apple roots.
Article in Plant communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Strigolactone (GR24) promotes arbuscular mycorrhizal colonization and wheat root growth.Planta · 2026Article
- Transcriptomic Profiling Identifies Symbiosis-Induced GDSL Lipase Genes Associated with Soybean-Arbuscular Mycorrhizal Symbiosis.International journal of molecular sciences · 2026Article
- Low Dosage of ABA Enhances Arbuscule Formation and Recovers the Inhibitory Effect of Low pH on This Process.Plant-environment interactions (Hoboken, N.J.) · 2026Article
- Abscisic acid at the crossroad of abiotic stress responses and plant-microbe interactions.PLoS pathogens · 2026Article
- Mediator subunit MED25 represses ABI5-dependent activation of erucic acid biosynthetic geneFrontiers in plant science · 2026Article
- Molecular regulation of fatty acid biosynthesis and oil composition during olive drupe ripening.Plant cell reports · 2025Article
- Molecular characteristics and regulatory effects of dwarfing Rht genes in Triticum aestivum L.BMC plant biology · 2025Article
- Funneliformis mosseae Modulates Root 14-3-3 Gene Expression to Enhance Drought Tolerance in Trifoliate Orange: A Molecular-Physiological Integration.Physiologia plantarumArticle
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Authors and funding
12 authors.
Funding
Abstract
The roots of most land plants form symbioses with arbuscular mycorrhizal (AM) fungi. The fungus promotes nutrient uptake from the soil while receiving plant-derived photosynthates as lipids and sugars. Nutrient exchange must be regulated by both partners; however, the mechanisms underlying the regulation of lipid supply from the plant to the AM fungus remain unclear. Here, we performed a molecular study on the role of elevated abscisic acid (ABA) levels during AM fungal infection in apple (Malus spp.) roots. AM fungal colonization induced the expression of two ABA biosynthesis genes, MdNCED3.1 and MdNCED3.2, in apple roots and increased ABA content, which promoted AM fungal growth. The effect of ABA on symbiosis was confirmed in transgenic apple roots overexpressing or silencing MdNCED3.1 or MdNCED3.2. Transcriptome analysis and transgenic experiments revealed that the transcription factor MdABF2 plays a key role in ABA-mediated symbiosis during AM infection and regulates the expression of genes associated with fatty acid (FA) biosynthesis (e.g., MdKASIII) and transport (such as MdSTR2) in apple roots. Activation of these genes increased FA levels in roots and enhanced AM fungal colonization and arbuscule development. These findings identify a molecular pathway in which ABA signaling positively regulates FA biosynthesis and transport, thereby increasing lipid supply to AM fungi and promoting AM symbiosis.
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