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2015 | 37 | 10 |
Tytuł artykułu

Jasmonic acid-induced hydrogen peroxide activates MEK1/2 in upregulating the redox states of ascorbate and glutathione in wheat leaves

Autorzy
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
We studied the relationship between hydrogen peroxide (H2O2) and MEK1/2 in jasmonic acid (JA) signaling in regulating the redox states of ascorbate (AsA) and glutathione (GSH). JA increased H2O2 production, MEK1/ 2 phosphorylation, the transcription levels and activities of AsA and GSH metabolic enzymes (APX, GR, DHAR, MDHAR, GalLDH and γ-ECS), AsA and GSH contents, and the redox states of AsA and GSH (ratios of AsA/DHA and GSH/GSSG). Above increases were inhibited by applications of H2O2 synthesis inhibitor DPI and scavenger DMTU. However, applications of MEK1/2 inhibitors PD98059 and U0126 had no significant effect on JA-induced H2O2 production. Treatments with exogenous H2O2 also increased MEK1/2 phosphorylation, the transcription levels and activities of AsA and GSH metabolic enzymes, AsA and GSH contents, and the redox states of AsA and GSH. Above increases except the transcription level and activity of γ-ECS were all suppressed by pretreatments with PD98059 and U0126. Our results suggested that Jainduced H2O2 could trigger MEK1/2 phosphorylation and activation leading to the upregulation of AsA and GSH metabolic enzymes.
Słowa kluczowe
EN
Wydawca
-
Rocznik
Tom
37
Numer
10
Opis fizyczny
Article: 200 [6 p.], fig.,ref.
Twórcy
autor
  • Shaanxi Province Key Laboratory of Bio-resources, Shaanxi University of Technology, Hanzhong, 723001, China
autor
  • College of Science, Northwest A and F University, Yangling, 712100, China
autor
  • Henan Institute of Science and Technology, Xinxiang, 453003, China
Bibliografia
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
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