Browsing by Subject "Hordeum vulgare"

Now showing items 1-7 of 7

    • Effect of infestation by aphids on the water status of barley and insect development 
      Marino Cabrera, Hernán; Argandoña Cortés, Victor; Zúñiga Navarro, Gustavo; Corcuera, Luis (1995)
      To compare the effects of aphid infestation with some effects of wounding and drought-stress, several physiological parameters and metabolite concentrations were measured in infested, mechanically wounded or water-stressed ...
    • Ethylene production and peroxidase activity in aphid-infested barley 
      Argandoña, V. H.; Chaman, M.; Cardemil, L.; Muñoz, O.; Zúñiga, G. E.; Corcuera, L. J. (2001)
      The purpose of this work was to investigate whether ethylene is involved in the oxidative and defensive responses of barley to the aphids Schizaphis graminum (biotype C) and Rhopalophum padi. The effect of aphid infestation ...
    • Increase in gramine content in barley infested by the aphid Schizaphis graminum R 
      Velozo, Juan A.; Alvarez, Rodrigo I.; Wächter, Gerald A.; Timmermann, Barbara N.; Corcuera, Luis J. (Elsevier Ltd, 1999)
      The kinetics of accumulation of gramine were measured in three aphid infested and non-infested cultivars of barley (Hordeum vulgare; cvs. Frontera, Libra and Acuario). After 6 days of infestation gramine content increased ...
    • Induction of soluble and cell wall peroxidases by aphid infestation in barley 
      Chaman Medina, Mercedes; Corcuera, Luis; Zúñiga Navarro, Gustavo; Cardemil Oliva, Liliana; Argandoña Cortés, Víctor (2001)
      Peroxidase enzymes have been found in soluble, ionically bound, and covalently bound forms and have been implicated in several physiological processes in plants. This paper investigates the effect of aphid infestation ...
    • Lipid changes in barley seedlings subjected to water and cold stress 
      Zún ̃iga, Gustavo; Fernandez, Julio; Cristi, Raul; Alberdi, Miren; Corcuera, Luis (1990)
      Barley seedlings were subjected to water and cold stress, and the composition of lipid fractions and the accumulation of several low molecular weight metabolites in leaves determined. Proline, glycine-betaine and the total ...
    • Proteinase inhibitor accumulation in aphid-infested barley leaves 
      Casaretto, Jose A.; Corcuera, Luis J. (1998)
      Proteinase inhibitors (chymotrypsin and trypsin inhibitors) accumulation in barley leaves was studied when the plants were infested with the aphids Schizaphis graminum and Rhopalosiphum padi. Aphid infestation resulted ...
    • Relationships between salicylic acid content, phenylalanine ammonia-lyase (PAL) activity, and resistance ... 
      Chaman, Mercedes E.; Copaja, Sylvia V.; Argandoña, Victor H. (2003)
      It has been suggested that salicylic acid (SA) is a signal in acquired resistance to pathogens in several plants. Also, it has been suggested that infestation of plants causes an increase in the activity of phenylalanine ...