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Antioxidant response of a novel Streptomyces sp. M3004 isolated from legume rhizosphere to H2O2 and paraquat

Paper ID Volume ID Publish Year Pages File Format Full-Text
35962 45116 2007 9 PDF Available
Title
Antioxidant response of a novel Streptomyces sp. M3004 isolated from legume rhizosphere to H2O2 and paraquat
Abstract

This paper aims to investigate the effect of H2O2 and paraquat on the activities of superoxide dismutase (SOD) and catalase (CAT), and membrane lipid peroxidation (LPO) levels in newly isolated Streptomyces sp. M3004. SOD activities of Streptomyces sp. M3004, grown in 10 mM and 30 mM H2O2, were significantly lower than the control cultures. On the other hand, as an antioxidant enzyme, CAT activity in both H2O2 treatment conditions increased significantly compared with the control. These activity values in 10 mM and 30 mM H2O2 treatment on the 48th hour of incubation were 3.8- and 6.6-fold higher than the control, respectively. SOD activity decreased significantly with respect to paraquat concentration, which was added at the start of the incubation. CAT activities increased significantly in 1.0 mM and 3.0 mM paraquat treatments compared to control. As an indicative marker of membrane damage, LPO levels of the novel isolate Streptomyces sp. M3004 treated with H2O2, and paraquat stress conditions were significantly higher than the control. Nevertheless, compared with the 30 mM H2O2 in both treatment conditions, LPO levels in 10 mM H2O2 were significantly higher. The decreases in SOD activities in paraquat and H2O2 treatment conditions resulted in the increases in the LPO levels although it increases in CAT activities.

Keywords
Streptomyces sp.; Superoxide dismutase (SOD); Catalase (CAT); Lipid peroxidation (LPO); H2O2; Paraquat
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Antioxidant response of a novel Streptomyces sp. M3004 isolated from legume rhizosphere to H2O2 and paraquat
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 2, February 2007, Pages 235–243
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us