Antioxidative Potentials as a Protective Mechanism in Catharanthus roseus (L.) G.Don. Plants under Salinity Stress

Cheruth Abdul JALEEL; Ragupathi GOPI; Paramasivam MANIVANNAN; Rajaram PANNEERSELVAM

Makale detayları

Antioxidative Potentials as a Protective Mechanism in Catharanthus roseus (L.) G.Don. Plants under Salinity Stress

Yazarlar:

Cheruth Abdul JALEEL | Ragupathi GOPI | Paramasivam MANIVANNAN | Rajaram PANNEERSELVAM

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Botany 2007 Vol.31 Issue 3, pp.245-251

Belge Tipi:

Makale

Yayın Tarihi:

2/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000723771

Sıklık:

İki Aylık

eISSN:

1303-6106

pISSN:

1300-008X

Özet:

 

Antioxidant responses were analysed in Catharanthus roseus (L.) G.Don. under 0, 50 and 100 mM NaCl in order to investigate the plant´s protective mechanisms against long-term salt-induced oxidative stress. The NaCl treatments were repeated in 4 different stages of growth, i.e. 30, 45, 60 and 75 days after sowing (DAS). The plants were uprooted randomly 90 DAS and the non-enzymatic and enzymatic antioxidant potentials were analysed. High salinity caused a decrease in reduced glutathione (GSH) and an enhancement in total ascorbate (AA) content and the antioxidant enzyme and ascorbate peroxidase (APX, EC 1.11.1.11) activities. Moreover, salinity induced a significant decline in superoxide dismutase (SOD, EC 1.15.1.1) and peroxidase (POX, EC 1.11.1.7) activities. The changes found in catalase (CAT, EC 1.11.1.6) activities may be of great importance in the H2O2 detoxification mechanism under oxidative stress.

 

Antioxidant responses were analysed in Catharanthus roseus (L.) G.Don. under 0, 50 and 100 mM NaCl in order to investigate the plant´s protective mechanisms against long-term salt-induced oxidative stress. The NaCl treatments were repeated in 4 different stages of growth, i.e. 30, 45, 60 and 75 days after sowing (DAS). The plants were uprooted randomly 90 DAS and the non-enzymatic and enzymatic antioxidant potentials were analysed. High salinity caused a decrease in reduced glutathione (GSH) and an enhancement in total ascorbate (AA) content and the antioxidant enzyme and ascorbate peroxidase (APX, EC 1.11.1.11) activities. Moreover, salinity induced a significant decline in superoxide dismutase (SOD, EC 1.15.1.1) and peroxidase (POX, EC 1.11.1.7) activities. The changes found in catalase (CAT, EC 1.11.1.6) activities may be of great importance in the H2O2 detoxification mechanism under oxidative stress.

Makale detayları

Antioxidative Potentials as a Protective Mechanism in Catharanthus roseus (L.) G.Don. Plants under Salinity Stress

Yazarlar: Cheruth Abdul JALEEL | Ragupathi GOPI | Paramasivam MANIVANNAN | Rajaram PANNEERSELVAM

Yayıncı: TUBITAK

Dergi: Turkish Journal of Botany 2007 Vol.31 Issue 3, pp.245-251

Belge Tipi: Makale

Yayın Tarihi: 2/2007

Belge Dili: Türkçe

Document ID (Org No.): 2000723771

Sıklık: İki Aylık

eISSN: 1303-6106

pISSN: 1300-008X

Sayı

Yazarlar:

Cheruth Abdul JALEEL | Ragupathi GOPI | Paramasivam MANIVANNAN | Rajaram PANNEERSELVAM

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Botany 2007 Vol.31 Issue 3, pp.245-251

Belge Tipi:

Makale

Yayın Tarihi:

2/2007

Belge Dili:

Türkçe

Document ID (Org No.):

2000723771

Sıklık:

İki Aylık

eISSN:

1303-6106

pISSN:

1300-008X