skip to main content
Idioma:

Regulation of Arabidopsis gene expression by low fluence rate UV-B independently of UVR8 and stress signaling

O'Hara, Andrew ; Headland, Lauren R ; Díaz-Ramos, L. Aranzazú ; Morales, Luis O ; Strid, Åke ; Jenkins, Gareth I

Photochemical & photobiological sciences, 2019, Vol.18 (7), p.1675-1684 [Periódico revisado por pares]

Cham: Springer International Publishing

Texto completo disponível

Citações Citado por
  • Título:
    Regulation of Arabidopsis gene expression by low fluence rate UV-B independently of UVR8 and stress signaling
  • Autor: O'Hara, Andrew ; Headland, Lauren R ; Díaz-Ramos, L. Aranzazú ; Morales, Luis O ; Strid, Åke ; Jenkins, Gareth I
  • Assuntos: Acclimation ; Acclimatization ; Arabidopsis ; Biochemistry ; Biomaterials ; Chemistry ; Exposure ; Fluence ; Gene expression ; Genes ; Photoreceptors ; Physical Chemistry ; Phytochromes ; Plant Sciences ; Signal transduction ; Signaling ; Stress ; Wavelengths
  • É parte de: Photochemical & photobiological sciences, 2019, Vol.18 (7), p.1675-1684
  • Notas: 10.1039/c9pp00151d
    Electronic supplementary information (ESI) available. See DOI
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: UV-B exposure of plants regulates expression of numerous genes concerned with various responses. Sudden exposure of non-acclimated plants to high fluence rate, short wavelength UV-B induces expression via stress-related signaling pathways that are not specific to the UV-B stimulus, whereas low fluence rates of UV-B can regulate expression via the UV-B photoreceptor UV RESISTANCE LOCUS 8 (UVR8). However, there is little information about whether non-stressful, low fluence rate UV-B treatments can activate gene expression independently of UVR8. Here, transcriptomic analysis of wild-type and uvr8 mutant Arabidopsis exposed to low fluence rate UV-B showed that numerous genes were regulated independently of UVR8. Moreover, nearly all of these genes were distinct to those induced by stress treatments. A small number of genes were expressed at all UV-B fluence rates employed and may be concerned with activation of eustress responses that facilitate acclimation to changing conditions. Expression of the gene encoding the transcription factor ARABIDOPSIS NAC DOMAIN CONTAINING PROTEIN 13 (ANAC13) was studied to characterise a low fluence rate, UVR8-independent response. ANAC13 is induced by as little as 0.1 μmol m −2 s −1 UV-B and its regulation is independent of components of the canonical UVR8 signaling pathway COP1 and HY5/HYH. Furthermore, UV-B induced expression of ANAC13 is independent of the photoreceptors CRY1, CRY2, PHOT1 and PHOT2 and phytochromes A, B, D and E. ANAC13 expression is induced over a range of UV-B wavelengths at low doses, with maximum response at 310 nm. This study provides a basis for further investigation of UVR8 and stress independent, low fluence rate UV-B signaling pathway(s). Exposure of Arabidopsis to a low fluence rate of UV-B regulates a set of genes independently of UVR8 and stress signaling.
  • Editor: Cham: Springer International Publishing
  • Idioma: Inglês
Links
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.