Role of arabidopsis UV RESISTANCE LOCUS 8 in plant growth reduction under osmotic stress and low levels of UV-B (Articolo in rivista)

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  • Role of arabidopsis UV RESISTANCE LOCUS 8 in plant growth reduction under osmotic stress and low levels of UV-B (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1093/mp/ssu002 (literal)
Alternative label
  • Fasano R.; Gonzalez N.; Tosco A.; Dal Piaz F.; Docimo T.; Serrano R.; Grillo S.; Leone A.; Inze D. (2014)
    Role of arabidopsis UV RESISTANCE LOCUS 8 in plant growth reduction under osmotic stress and low levels of UV-B
    in Molecular Plant (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Fasano R.; Gonzalez N.; Tosco A.; Dal Piaz F.; Docimo T.; Serrano R.; Grillo S.; Leone A.; Inze D. (literal)
Pagina inizio
  • 773 (literal)
Pagina fine
  • 791 (literal)
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  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84900516162&partnerID=q2rCbXpz (literal)
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  • 7 (literal)
Rivista
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  • 5 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Pharmacy, University of Salerno, Fisciano, Italy; Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Gent, Belgium; Max Planck Institute for Chemical Ecology, Jena, Germany; Instituto de Biología Molecular y Celular de Plantas, Universidad Politecnica de Valencia CSIC, Valencia, Spain; National Research Council of Italy, Institute of Plant Genetics, Res. Div. Portici, Portici, Italy (literal)
Titolo
  • Role of arabidopsis UV RESISTANCE LOCUS 8 in plant growth reduction under osmotic stress and low levels of UV-B (literal)
Abstract
  • In high-light environments, plants are exposed to different types of stresses, such as an excess of UV-B, but also drought stress which triggers a common morphogenic adaptive response resulting in a general reduction of plant growth. Here, we report that the Arabidopsis thaliana UV RESISTANCE LOCUS 8 (UVR8) gene, a known regulator of the UV-B morphogenic response, was able to complement a Saccharomyces cerevisiae osmo-sensitive mutant and its expression was induced after osmotic or salt stress in Arabidopsis plants. Under low levels of UV-B, plants overexpressing UVR8 are dwarfed with a reduced root development and accumulate more flavonoids compared to control plants. The growth defects are mainly due to the inhibition of cell expansion. The growth inhibition triggered by UVR8 overexpression in plants under low levels of UV-B was exacerbated by mannitol-induced osmotic stress, but it was not significantly affected by ionic stress. In contrast, uvr8-6 mutant plants do not differ from wild-type plants under standard conditions, but they show an increased shoot growth under high-salt stress. Our data suggest that UVR8-mediated accumulation of flavonoid and possibly changes in auxin homeostasis are the underlying mechanism of the observed growth phenotypes and that UVR8 might have an important role for integrating plant growth and stress signals. © 2014 © The Author 2014. Published by the Molecular Plant Shanghai Editorial Office in association with Oxford University Press on behalf of CSPB and IPPE, SIBS, CAS. (literal)
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