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Oxidative enzyme changes in sorghum infested by shoot fly.

P G Padmaja1, B L Shwetha2, G Swetha2

  • 1Directorate of Sorghum Research, Rajendranagar, Hyderabad 500 030, India padmaja@sorghum.res.in.

Journal of Insect Science (Online)
|December 7, 2014
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Summary
This summary is machine-generated.

Sorghum plants resistant to shoot fly (Atherigona soccata) show higher levels of defense enzymes like peroxidase and polyphenol oxidase. These enzymes and proteins are key to sorghum

Keywords:
host plant resistanceoxidative enzymeproteinshoot flysorghum

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Area of Science:

  • Agricultural Science
  • Entomology
  • Plant Pathology

Background:

  • Sorghum (Sorghum bicolor) is a vital crop susceptible to shoot fly (Atherigona soccata) infestation.
  • Understanding plant defense mechanisms is crucial for developing resistant sorghum varieties.

Purpose of the Study:

  • To investigate the role of oxidative enzymes in sorghum's defense against Atherigona soccata.
  • To compare enzyme activity and protein content in resistant and susceptible sorghum genotypes.

Main Methods:

  • Assessed polyphenol oxidase and peroxidase activity in sorghum genotypes.
  • Measured total protein content in response to shoot fly feeding.
  • Analyzed isozyme and protein profiles of infested and control plants.

Main Results:

  • Resistant sorghum genotypes exhibited higher peroxidase and polyphenol oxidase activities and total protein content.
  • Enzyme activities and protein levels increased in infested plants compared to controls.
  • Distinct isozyme and protein profiles were observed between infested and uninfested plants.

Conclusions:

  • Peroxidase and polyphenol oxidase activities, along with total protein content, contribute to sorghum's resistance against shoot fly.
  • These defense enzymes and proteins are potential targets for breeding insect-resistant sorghum varieties.