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Title 

Differential levels of antioxidants in paraquat-resistant and -susceptible Erigeron canadensis biotypes in Korea

Authors 

J Y PyonR Z PiaoS W RohS Y ShinSang Soo Kwak

Publisher 

Wiley-Blackwell

Issue Date 

2004

Citation 

Weed Biology and Management, vol. 4, no. 2, pp. 75-80

Keywords 

antioxidant enzymesascorbate peroxidaseerigeron canadensisglutathioneglutathione reductaseparaquatsuperoxide dismutaseconyza canadensis canadensiserigeron

Abstract 

To characterize the biochemical differences in paraquat-resistant and -susceptible biotypes of Erigeron canadensis L. collected from Korea, we investigated the constitutive levels of various antioxidants such as antioxidant enzymes and low molecular weight antioxidants in leaves, as well as after paraquat treatment. The activities of superoxide dismutase, peroxidase, ascorbate peroxidase, and catalase were higher in the paraquat-resistant biotype than in the paraquat-susceptible biotype. Reduced ascorbic acid content was higher in the resistant biotype, but the content of reduced glutathione was higher in the susceptible biotype. These results indicate that one of the paraquat-resistant mechanisms in E. canadensis in the present study might be related to protecting the activities of antioxidant enzymes, such as superoxide dismutase, peroxidase ascorbate peroxidase, and catalase, as well as the contents of low molecular weight antioxidants such as ascorbate and glutathione.

ISSN 

1444-6162

Link 

http://dx.doi.org/10.1111/j.1445-6664.2004.00122.x

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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