Metabolic response to cold and freezing of Osteospermum Ecklonis overexpressing Osmyb4 (Abstract/Poster in atti di convegno)

Type
Label
  • Metabolic response to cold and freezing of Osteospermum Ecklonis overexpressing Osmyb4 (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Laura M., Consonni R., Locatelli F., Fumagalli E., Allavena A., Coraggio I., Mattana M. (2010)
    Metabolic response to cold and freezing of Osteospermum Ecklonis overexpressing Osmyb4
    in 54° Convegno Socetà Italiana di Genetica Agraria, Matera
    (literal)
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  • Laura M., Consonni R., Locatelli F., Fumagalli E., Allavena A., Coraggio I., Mattana M. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • 27-30 Settembre (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • The constitutive expression of the rice Osmyb4 gene in Arabidopsis plants gives rise to enhanced abiotic and biotic stress tolerance, probably by activating several stress-inducible pathways. However, the effect of Osmyb4 on stress tolerance likely depends on the genetic background of the transformed species. In this study, we explored the potential of Osmyb4 to enhance the cold and freezing tolerance of Osteospermum ecklonis, an ornamental and perennial plant native to South Africa, because of an increasing interest in growing this species in Europe under field condition where winter temperatures are low. Transgenic Osteospermum ecklonis plants were obtained through Agrobacterium transformation with the Osmyb4 rice gene under the control of the CaMV35S promoter and Nos terminator. We examined the phenotypic adaptation of transgenic plants to cold and freezing stress. We also analysed the ability of wild-type and transgenic Osteospermum to accumulate several solutes, such as proline, amino acids and sugars. Using nuclear magnetic resonance, we outlined the metabolic profile of this species under normal growth conditions and under stress for the first time. Indeed, we found that overexpression of Osmyb4 improved the cold and freezing tolerance and produced changes in metabolite accumulation, especially of sugars and proline. Based on our data, it could be of agronomic and economic interest to use this gene to produce Osteospermum plants capable of growing in open field, even during the winter season in climatic zone Z9. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Laura M., Allavena A.: CRA-Sanremo (IM); Consonni R.: CNR-ISMAC Milano; Mattana M., Coraggio I., Fumagalli E.: CNR-IBBA Milano (literal)
Titolo
  • Metabolic response to cold and freezing of Osteospermum Ecklonis overexpressing Osmyb4 (literal)
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