Regulation of mycorrhizal colonization under stress in tomato depends on symbiotic efficiency
Metadatos
Mostrar el registro completo del ítemAutor
Lidoy Logroño, Javier; López García, Álvaro; Amate, Clara; Garcia Ramirez, Juan Manuel; García Garrido, José Manuel; Azcón Aguilar, Concepción; López Ráez, Juan Antonio; María José, PozoEditorial
Elsevier
Materia
Plant defenses Nutrient exchange Transcriptional regulation Carbon reward Symbiotic efficiency Phytohormone signaling Salt stress
Fecha
2023-08-21Referencia bibliográfica
J. Lidoy et al. Regulation of mycorrhizal colonization under stress in tomato depends on symbiotic efficiency. Environmental and Experimental Botany 215 (2023) 105479[https://doi.org/10.1016/j.envexpbot.2023.105479]
Patrocinador
RTI2018-094350-B-C31 and PID2021-124813OB-C31 from the Spanish National R&D Plan of the Ministry of Science; Innovation and Universities (MICIU; European Regional Development Fund (ERDF) ‘a way a making EuropeResumen
The mutualistic symbiosis between plants and arbuscular mycorrhizal (AM) fungi is based on a balanced nutrient
exchange between both partners, with the plant achieving improved nutrition and stress tolerance. The symbiosis
is finely-tuned according to plant’s needs and surrounding conditions, usually through phytohormonal signaling.
Thus, environmental conditions or stress factors modulating phytohormone signaling may influence the symbiosis.
This study compares the colonization abilities of 2 AM fungal species, Funneliformis mosseae and Rhizophagus
irregularis, independently or in combination, in tomato plants subjected to different stress conditions.
These included salt stress and systemic defense activation by aboveground application of the defense-related
hormones methyl jasmonate, abscisic acid and salicylic acid. The results show that root colonization by the
two fungal species differs depending on the stress treatment. Nutrient and transcriptional analyses revealed that
changes in colonization correlated with differential regulation of nutrient exchange, plant defensive responses,
and symbiosis regulatory genes. Specifically, under salt stress R. irregularis colonization decreased, while
F. mosseae colonization was promoted. These differential regulation of colonization under stress positively
correlated with changes in the functionality of the symbiosis. Overall, the results support that the benefits
provided by each AM fungi influence carbon reward and determines the control of root colonization by the host
plant.