Transcription factor TGA2 is essential for UV-B stress tolerance controlling oxidative stress in Arabidopsis

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dc.catalogadorgjm
dc.contributor.authorHerrera Vásquez, Ariel Esteban
dc.contributor.authorFonseca Cárdenas, Alejandro Alfredo
dc.contributor.authorUgalde Valdivia, José Manuel
dc.contributor.authorLamig Giannini, Liliana Andrea
dc.contributor.authorSeguel Avello, Aldo Luis
dc.contributor.authorMoyano Yugovic, Tomás Custodio
dc.contributor.authorGutiérrez Ilabaca, Rodrigo Antonio
dc.contributor.authorSalinas, Paula
dc.contributor.authorVidal, Elena A.
dc.contributor.authorHoluigue Barros, Loreto
dc.date.accessioned2024-01-30T15:23:29Z
dc.date.available2024-01-30T15:23:29Z
dc.date.issued2020
dc.description.abstractPlants possess a diversity of Reactive Oxygen Species (ROS)-processing enzymes involved in sensing and controlling ROS levels under basal and stressful conditions. There is little information on the transcriptional regulators that control the expression of these ROS-processing enzymes, particularly at the onset of the defense response to abiotic stress. Filling this gap, this paper reports a critical role for Arabidopsis TGA class II factors (TGA2, TGA5, and TGA6) in the tolerance response to UV-B light and photooxidative stress, by activating the expression of genes with antioxidative roles. We identified two clusters of genes responsive to UV-B and activated by TGA2/5/6 were identified using RNAseq and clustering analysis. The GSTU gene family, which encodes glutathione transferase enzymes from the Tau subclass, was overrepresented in these clusters. We corroborated the TGA2-mediated activation in response to UV-B for three model genes (GSTU7, GSTU8, and GSTU25) using RT-qPCR and ChIP analyses. Interestingly, using tga256 mutant and TGA2- and GSTU7-complemented mutant plants, we demonstrated that TGA2-mediated induction of GSTU genes is essential to control ROS levels and oxidative damage after UV-B and MeV treatments. This evidence positions TGA class II factors, particularly TGA2, as a key players in the redox signaling network of Arabidopsis plants.
dc.fuente.origenORCID
dc.identifier.doi10.1101/2020.05.24.113589
dc.identifier.urihttps://doi.org/10.1101/2020.05.24.113589
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/81057
dc.information.autorucFacultad de Ciencias Biológicas; Herrera Vásquez, Ariel Esteban; 0000-0003-4313-8475; 142395
dc.information.autorucFacultad de Ciencias Biológicas; Fonseca Cárdenas, Alejandro Alfredo; S/I; 1031204
dc.information.autorucFacultad de Ciencias Biológicas; Ugalde Valdivia, José Manuel; S/I; 217895
dc.information.autorucFacultad de Ciencias Biológicas; Lamig Giannini, Liliana Andrea; S/I; 221018
dc.information.autorucFacultad de Ciencias Biológicas; Seguel Avello, Aldo Luis; S/I; 163573
dc.information.autorucFacultad de Ciencias Biológicas; Moyano Yugovic, Tomás Custodio; S/I; 149778
dc.information.autorucFacultad de Ciencias Biológicas; Gutiérrez Ilabaca, Rodrigo Antonio; 0000-0002-5961-5005; 86782
dc.information.autorucFacultad de Ciencias Biológicas; Holuigue Barros, Loreto; S/I; 50349
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.subjectArabidopsis
dc.subjectGlutathione transferase
dc.subjectGSTU7
dc.subjectPhotooxidative stress
dc.subjectRedox-signaling
dc.subjectROS
dc.subjectTGA class II
dc.subjectTGA2
dc.subjectTranscription factor
dc.subjectUV-B stress
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.titleTranscription factor TGA2 is essential for UV-B stress tolerance controlling oxidative stress in Arabidopsis
dc.typepreprint
sipa.codpersvinculados142395
sipa.codpersvinculados1031204
sipa.codpersvinculados217895
sipa.codpersvinculados221018
sipa.codpersvinculados163573
sipa.codpersvinculados149778
sipa.codpersvinculados86782
sipa.codpersvinculados50349
sipa.trazabilidadORCID;2024-01-15
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