ArticleFrontiers in plant science2025
Genotype-specific responses of maize plants to
Article in Frontiers in plant science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- The Effect of Mycorrhization with Fungi of Different Efficiency on the Root Metabolome ofInternational journal of molecular sciences · 2026Article
- Decoupling the Good from the Bad: Translational Strategies for Strigolactone Application in Agriculture.Biology · 2026Review
- Species-Specific Effects of Humic Substances and Mycorrhiza on Antioxidant Defense and Metal Stress Tolerance inInternational journal of molecular sciences · 2026Article
- MaizePlants (Basel, Switzerland) · 2026Article
- Illumina RNA-seq data of Genotype-specific responses of maize plants to Funneliformis mosseae.Data in brief · 2026Article
- Systemic decoupling of trait coordination: network-based identification of multi-stress resilient maize ideotypes.Frontiers in plant science · 2026Article
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Abstract
Introduction: Drought is a major abiotic constraint limiting maize productivity, yet the genotype-specific mechanisms through which arbuscular mycorrhizal fungi (AMF) enhance drought resilience remain poorly understood. This study aimed to elucidate how AMF modulate drought tolerance, root plasticity, and heterosis in maize genotypes with contrasting drought sensitivity. Methods: Two maize inbred lines differing in drought tolerance (K1, tolerant; K2, sensitive) and their hybrid (KH) were grown under controlled pot conditions at either well-watered (60% soil moisture) or drought-stressed (30% soil moisture) levels, with or without inoculation with Results: AMF induced distinct, genotype-dependent responses under drought stress. In K1 plants, AMF maintained drought tolerance by stabilizing photosynthetic performance, supported by sustained expression of PSI, PSII, LHCb, and Calvin-cycle genes, alongside the activation of CYP450 71A1 and CONSTANS-like 3, suggesting auxin-associated regulation of stress adaptation. In contrast, drought strongly suppressed photosynthetic gene expression in K2 plants, while AMF promoted pronounced root system expansion accompanied by the induction of indole-3-acetaldehyde oxidase, auxin-binding protein 1, CORONATINE-INSENSITIVE 1, and tasselseed-2, indicating hormone-driven root plasticity and modified reproductive signaling. In the hybrid KH, selective activation of RbcX and heterosis-associated genes supported biomass stability and consistent flowering, although AMF had limited effects on hybrid vigor. Discussion: These findings reveal distinct molecular strategies underlying AMF-mediated drought resilience in maize, demonstrating that drought-sensitive genotypes primarily benefit through enhanced root plasticity, whereas drought-tolerant genotypes maintain photosynthetic stability. Overall, the results highlight the potential of targeted AMF-genotype combinations to improve water-use efficiency and promote sustainable maize production under drought stress.
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