Identification of ABA-Mediated Genetic and Metabolic Responses to Soil Flooding in Tomato (Solanum lycopersicum L. Mill)
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Altres documents de l'autoria: de Ollas, Carlos; González-Guzmán, Miguel; Pitarch Sánchez, Zara; Matus, José Tomás; Candela, Héctor; Rambla, José L.; Granell, Antonio; Gomez-Cadenas, Aurelio; Arbona, Vicent
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Títol
Identification of ABA-Mediated Genetic and Metabolic Responses to Soil Flooding in Tomato (Solanum lycopersicum L. Mill)Autoria
Data de publicació
2021-03-05Editor
Frontiers MediaISSN
1664-462XCita bibliogràfica
De Ollas C, González-Guzmán M, Pitarch Z, Matus JT, Candela H, Rambla JL, Granell A, Gómez-Cadenas A and Arbona V (2021) Identification of ABA-Mediated Genetic and Metabolic Responses to Soil Flooding in Tomato (Solanum lycopersicum L. Mill). Front. Plant Sci. 12:613059. doi: 10.3389/fpls.2021.613059Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://www.frontiersin.org/articles/10.3389/fpls.2021.613059/fullVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Soil flooding is a compound abiotic stress that alters soil properties and limits atmospheric gas diffusion (O2 and CO2) to the roots. The involvement of abscisic acid (ABA) in the regulation of soil flooding-specific ... [+]
Soil flooding is a compound abiotic stress that alters soil properties and limits atmospheric gas diffusion (O2 and CO2) to the roots. The involvement of abscisic acid (ABA) in the regulation of soil flooding-specific genetic and metabolic responses has been scarcely studied despite its key importance as regulator in other abiotic stress conditions. To attain this objective, wild type and ABA-deficient tomatoes were subjected to short-term (24 h) soil waterlogging. After this period, gas exchange parameters were reduced in the wild type but not in ABA-deficient plants that always had higher E and gs. Transcript and metabolite alterations were more intense in waterlogged tissues, with genotype-specific variations. Waterlogging reduced the ABA levels in the roots while inducing PYR/PYL/RCAR ABA receptors and ABA-dependent transcription factor transcripts, of which induction was less pronounced in the ABA-deficient genotype. Ethylene/O2-dependent genetic responses (ERFVIIs, plant anoxia survival responses, and genes involved in the N-degron pathway) were induced in hypoxic tissues independently of the genotype. Interestingly, genes encoding a nitrate reductase and a phytoglobin involved in NO biosynthesis and scavenging and ERFVII stability were induced in waterlogged tissues, but to a lower extent in ABA-deficient tomato. At the metabolic level, flooding-induced accumulation of Ala was enhanced in ABA-deficient lines following a differential accumulation of Glu and Asp in both hypoxic and aerated tissues, supporting their involvement as sources of oxalacetate to feed the tricarboxylic acid cycle in waterlogged tissues and constituting a potential advantage upon long periods of soil waterlogging. The promoter analysis of upregulated genes indicated that the production of oxalacetate from Asp via Asp oxidase, energy processes such as acetyl-CoA, ATP, and starch biosynthesis, and the lignification process were likely subjected to ABA regulation. Taken together, these data indicate that ABA depletion in waterlogged tissues acts as a positive signal, inducing several specific genetic and metabolic responses to soil flooding. [-]
Publicat a
Frontiers in Plant Science 12:613059Entitat finançadora
Ministerio de Economía y Competitividad | Universitat Jaume I | Generalitat Valenciana/Fondo Europeo de Desarrollo Regional (FEDER)
Codi del projecte o subvenció
AGL2016-76574-R | UJI-B2016- 23 | UJI-B2016-24 | IDIFEDER/2018/010 | UJI-B2019-24 | RYC-2016-19325 | RYC-2017-23645 | FJCI-2016-28601
Drets d'accés
info:eu-repo/semantics/openAccess
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