Interplay between secondary metabolites and plant hormones in silver nitrate-elicited Arabidopsis thaliana plants
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comunitat-uji-handle2:10234/197672
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INVESTIGACIONMetadata
Title
Interplay between secondary metabolites and plant hormones in silver nitrate-elicited Arabidopsis thaliana plantsAuthor (s)
Date
2024-03-01Publisher
Elsevier Masson s.r.l.ISSN
0981-9428Bibliographic citation
Eva Cañizares, Juan Manuel Acién, Berivan Özlem Gumuş, Vicente Vives-Peris, Miguel González-Guzmán, Vicent Arbona, Interplay between secondary metabolites and plant hormones in silver nitrate-elicited Arabidopsis thaliana plants, Plant Physiology and Biochemistry, Volume 208, 2024, 108483, ISSN 0981-9428, https://doi.org/10.1016/j.plaphy.2024.108483.Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0981942824001517Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Plants produce a myriad of specialized compounds in response to threats such as pathogens or pests and different abiotic factors. The stress-related induction of specialized metabolites can be mimicked using silver ... [+]
Plants produce a myriad of specialized compounds in response to threats such as pathogens or pests and different abiotic factors. The stress-related induction of specialized metabolites can be mimicked using silver nitrate (AgNO3) as an elicitor, which application in conservation agriculture has gained interest. In Arabidopsis thaliana, AgNO3 triggers the accumulation of indole glucosinolates (IGs) and the phytoalexin camalexin as well as pheylpropanoid-derived defensive metabolites such as coumaroylagmatins and scopoletin through a yet unknown mechanism. In this work, the role of jasmonic (JA) and salicylic acid (SA) signaling in the AgNO3-triggered specialized metabolite production was investigated. To attain this objective, AgNO3, MeJA and SA were applied to A. thaliana lines impaired in JA or SA signaling, or affected in the endogenous levels of IGs and AGs. Metabolomics data indicated that AgNO3 elicitation required an intact JA and SA signaling to elicit the metabolic response, although mutants impaired in hormone signaling retained certain capacity to induce specialized metabolites. In turn, plants overproducing or abolishing IGs production had also an altered hormonal signaling response, both in the accumulation of signaling molecules and the molecular response mechanisms (ORA59, PDF1.2, VSP2 and PR1 gene expression), which pointed out to a crosstalk between defense hormones and specialized metabolites. The present work provides evidence of a crosstalk mechanism between JA and SA underlying AgNO3 defense metabolite elicitation in A. thaliana. In this mechanism, IGs would act as retrograde feedback signals dampening the hormonal response; hence, expanding the signaling molecule concept. [-]
Is part of
Plant Physiology and Biochemistry, Volume 208, 2024.Funder Name
European Union NextGenerationEU/PRTR | Generalitat Valenciana | Agencia Estatal de Investigación
Project code
PID 2020-118126RB-I00, UJI-B2019-24, UJI-B2022-23 | CIACIF/2022/241, CIGRIS/2021/014, MCIN/ AEI /10.13039/501100011033, RYC-2016-19325
Rights
© 2024 The Authors
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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