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001-es BibID:	BIBFORM134409
Első szerző:	Virág Eszter (biológus)
Cím:	Genotype-specific responses of maize plants to Funneliformis mosseae under drought stress : phenomic and transcriptomic insights / Eszter Virág, Zoltán Zombori, Miklós Hóvári, Géza Hegedűs, László Sass, Györgyi Ferenc, Dénes Dudits, Katalin Posta
Dátum:	2025
ISSN:	1664-462X
Megjegyzések:	Drought is one of the most critical abiotic constraints limiting maize productivity, yet the host genotype-specific mechanisms through which arbuscular mycorrhizal fungi (AMF) influence drought resilience remain insufficiently defined. To address this gap, we examined how Funneliformis mosseae (BEG12) modulates drought tolerance, root plasticity, and heterosis in two contrasting maize inbreds (tolerant K1, sensitive K2) and their hybrid (KH). Maize plants were grown under controlled pot conditions at well-watered (60% moisture content) or drought-stressed (30% moisture content) soil conditions, with or without AMF inoculation. Integrated phenomic, biomass, and transcriptomic analyses revealed distinct, plant genotype-dependent AMF-triggered responses. In K1plants, AMF maintained drought tolerance by stabilizing photosynthetic performance via sustained expression of PSI, PSII, LHCb, and Calvin-cycle genes, together with the activation of CYP450 71A1 and CONSTANS-like 3, implicating auxin-linked regulation in stress adaptation. In K2 plants, drought markedly suppressed photosynthetic gene expression, whereas AMF triggered a strong 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 altered reproductive signaling. In KH plants, selective activation of RbcX and heterosis-related genes supported biomass stability and consistent flowering, although AMF exerted limited modulation of hybrid vigor. These findings uncover distinct, genotype-specific molecular strategies by which AMF enhance drought resilience, revealing that sensitive inbreed genotypes benefit primarily through root plasticity, while tolerant ones sustain photosynthetic stability. Our results highlight the potential of This is a provisional file, not the final typeset article targeted AMF?plant genotype combinations to improve water-use efficiency and sustainable maize production under drought stress.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk arbuscular mycorrhizae genotype specificity transcriptomics drought tolerance
Megjelenés:	Frontiers in Plant Science. - 16 (2026). -
További szerzők:	Zombori Zoltán Hóvári Miklós Hegedűs Géza Sass László Ferenc Györgyi (1980-) (molekuláris biológus) Dudits Dénes Posta Katalin (1961-) (biológia-kémia szakos tanár)
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