Cereal Research Communications

, Volume 44, Issue 4, pp 594–604 | Cite as

Effect of Ozone and Antioxidants on Wheat and its Pathogen — Bipolaris sorokininana

  • U. MinaEmail author
  • A. Fuloria
  • R. Aggarwal
Open Access


Tropospheric ozone (O3) adversely affects growth and productivity of crops and also influences crop–pathogen interactions. Adverse effects of O3 on crops can be mitigated by antioxidants application. In the present study through lab and field experiments impact of O3 and antioxidants treatment to wheat was assessed on growth of Bipolaris sorokiniana (BS-75 strain) pathogen responsible for Spot blotch disease, pathogenesis related (PR) proteins and chitinase content. Results showed that growth of Bipolaris was significantly higher in elevated ozone (EO3) exposed plants as compared to control plants. Antioxidants – ascorbic acid (AA), tagetes extract (T) and quercetin (Q) application on culture media and wheat plants, respectively, retarded the growth of Bipolaris sorokiniana. Among the three antioxidants minimum growth of Bipolaris was observed in AA-treated plants as compared to control plants. Reduction in chitinase activity and PR proteins content due to EO3 treatment in wheat plants was 18% and 78%, respectively, as compared to control plants. Increase in chitinase activity and PR proteins content due to antioxidants treatment in wheat plants was 45% and 60%, respectively, as compared to control plants.


ozone wheat pathogen Bipolaris sorokiniana 


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© Akadémiai Kiadó, Budapest 2016

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Authors and Affiliations

  1. 1.Centre for Environment Science and Climate Resilient AgricultureIndian Agricultural Research InstituteNew DelhiIndia
  2. 2.Division of Plant PathologyIndian Agricultural Research InstituteNew DelhiIndia

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