Evidence for a role of Ethylene-Insensitive 2 gene in the regulation of the oxidative stress response in Arabidopsis

• Autorzy: Cao S , Jiang S. , Zhang R.
• Języki publikacji: EN

Abstrakty

EN

The Arabidopsis Ethylene-Insensitive 2 (EIN2) gene has been shown to be involved in mediating the oxidative stress response; however, little is known about the underlying mechanisms involved. In this study, we found that the ethylene-insensitive mutant ein2-1 showed enhanced tolerance to oxidative stresses caused by both paraquat (PQ) and hydrogen peroxide as well as alleviated oxidative damage. Moreover, higher transcript levels of a choroplast Cu/Zn superoxide dismutase gene CSD2 and a catalase gene CAT3 and, consequently, higher activities of superoxide dismutase (SOD) and catalase (CAT), were detected in ein2-1 plants than in wild-type plants in the abtence or presence of PQ. These retults suggest that the ein2-1mutation results in constitutive activation of CSD2 and CAT3 genes and increases in the activities of SOD and CAT and, consequently, enhanced oxidative stress tolerance.

Słowa kluczowe

EN

stress tolerance; hydrogen peroxide; paraquat; reactive oxygen species; stress response; oxidative stress; Arabidopsis; ethylene signalling; ethylene-insensitive 2 gene; antioxidative enzyme; superoxide anion radical

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2006
• Tom: 28
• Numer: 5
• Opis fizyczny: p.417-425,fig.,ref.

Twórcy

autor

Cao S

• Hefei University of Technology, Hefei, Anhui 230009, People's Republic of China

autor

Jiang S.

autor

Zhang R.

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