Methyl jasmonate promotes the transient reduction of the levels of 2-Cys peroxiredoxin in Ricinus communis plants.
Jasmonates are signaling molecules that play a key role in the regulation of metabolic processes, reproduction and defense against insects and pathogens. This study investigated the effects of methyl jasmonate on the protein pattern of Ricinus communis plants and the activity of guaiacol peroxidase, an antioxidant enzyme. Methyl jasmonate treatment caused a transient reduction in guaiacol peroxidase activity. A similar response was observed for the levels of 2-Cys peroxiredoxin protein. Moreover, the levels of the small and large chains of Rubisco were also reduced. The transient reduction of the levels and activity of antioxidant enzymes could account for the increase in the levels of H2O2, an important signaling molecule in plant defense.
dos Santos Soares
Alexandra Martins
AM
Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense (LQFPP/CBB/UENF), Av. Alberto Lamego, 2000, Horto, Campos dos Goytacazes CEP 28013-602, Brazil.
de Souza
Thiago Freitas
TF
de Souza Domingues
Sarah Jane
SJ
Jacinto
Tânia
T
Tavares Machado
Olga Lima
OL
D000085:Acetates / Q000494:pharmacology*; D000595:Amino Acid Sequence; D002367:Ricinus communis / Q000187:drug effects / Q000201:enzymology*; D003517:Cyclopentanes / Q000494:pharmacology*; D054883:Oxylipins; D010446:Peptide Fragments; D009195:Peroxidase / Q000187:drug effects / Q000378:metabolism; D010544:Peroxidases / Q000187:drug effects / Q000378:metabolism*; D054464:Peroxiredoxins; D010937:Plant Growth Regulators / Q000494:pharmacology*; D010940:Plant Proteins / Q000187:drug effects / Q000302:isolation & purification / Q000378:metabolism; D012273:Ribulose-Bisphosphate Carboxylase / Q000737:chemistry / Q000378:metabolism; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
D000085:Acetates; D003517:Cyclopentanes; D054883:Oxylipins; D010446:Peptide Fragments; D010937:Plant Growth Regulators; D010940:Plant Proteins; C072239:methyl jasmonate; D010544:Peroxidases; C121048:guaiacol peroxidase; D054464:Peroxiredoxins; D009195:Peroxidase; D012273:Ribulose-Bisphosphate Carboxylase