Effects of Paraquat-induced oxidative stress on antioxidants and Chlorophyll Fluorescence in stay-green wheat (Triticum aestivum L.) flag leaves

Authors

  • Li Zhang State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130
  • Junbo Chen State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130
  • Huaiyu Zhang State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130
  • Zhenglong Ren State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130
  • Peigao Luo State Key Laboratory of Plant Breeding and Genetics, Sichuan Agricultural University, Chengdu 611130

DOI:

https://doi.org/10.3329/bjb.v42i2.18025

Keywords:

Paraquat, Wheat (Triticum aestivum L.), Reactive oxygen species, Chlorophyll fluorescence, Malondialdehyde

Abstract

Paraquat, a highly toxic herbicide, induces the production of reactive oxygen species in the cell. Paraquat resistance in stay-green wheat (Triticum aestivum L.) was investigated. Two cultivars, CN12 and CN17, were found to have a higher photo-oxidative resistance than that of common wheat MY11, as measured with antioxidant indexes and chlorophyll a fluorescence. The flag leaves of both CN12 and CN17 maintained a relatively high antioxidant enzyme activity, chlorophyll content, and photosynthetic index and a low level of lipid degradation after 24 h of treatment with 10 ?M paraquat. The Stay-green wheat cultivars CN12 and CN17 had a high resistance to paraquat-induced photo-oxidative stress, which can potentially alleviate some of the damage induced by environment pollution.

DOI: http://dx.doi.org/10.3329/bjb.v42i2.18025

Bangladesh J. Bot. 42(2): 239-245, 2013 (December)

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Published

2014-02-18

How to Cite

Zhang, L., Chen, J., Zhang, H., Ren, Z., & Luo, P. (2014). Effects of Paraquat-induced oxidative stress on antioxidants and Chlorophyll Fluorescence in stay-green wheat (Triticum aestivum L.) flag leaves. Bangladesh Journal of Botany, 42(2), 239–245. https://doi.org/10.3329/bjb.v42i2.18025

Issue

Vol. 42 No. 2 (2013)

Section

Articles

License

© Bangladesh Botanical Society

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