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Related Experiment Video

Updated: Sep 25, 2025

Author Spotlight: Integrating Biochemical Functions of &#946;-Glucanases and Peroxidase Enzymes in Wheat-RWA Interaction
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Wheat spike blast: genetic interventions for effective management.

Hanif Khan1, Shabir Hussain Wani2, Subhash Chander Bhardwaj3

  • 1ICAR-Indian Institute of Wheat and Barley Research, 132001, Karnal, Haryana, India. hanif.khan@icar.gov.in.

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|April 28, 2022
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Summary

Wheat blast, caused by Magnaporthe oryzae pathotype Triticum (MoT), continually evolves, overcoming resistance and fungicides. Managing this global threat requires understanding its genetics, epidemiology, and implementing policy changes for effective control.

Keywords:
Magnaporthe oryzae pathotype TriticumMoTResistance breedingWheat blast

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Area of Science:

  • Plant Pathology
  • Genetics
  • Epidemiology

Background:

  • Wheat blast, caused by Magnaporthe oryzae pathotype Triticum (MoT), was first discovered in Brazil in 1985.
  • MoT continuously evolves, developing new pathotypes that overcome wheat resistance and fungicides.
  • The fungus's compartmentalized genome provides an evolutionary advantage, complicating management strategies.

Purpose of the Study:

  • To review the genetics, race classification, and epidemiology of MoT.
  • To discuss challenges in wheat blast management and international spread.
  • To highlight the potential of genomics and genome editing for developing resistant wheat varieties.

Main Methods:

  • Review of existing literature on MoT genetics, epidemiology, and management.
  • Analysis of MoT's evolutionary dynamics and impact on wheat production.
  • Discussion of policy implications for international seed movement and research collaboration.

Main Results:

  • MoT exhibits rapid evolution, posing a significant threat to global food security.
  • New geographical niches are being established by the airborne fungus.
  • International outbreaks, like those in Bangladesh and Zambia, highlight the risks of pathogen spread.

Conclusions:

  • Effective wheat blast management requires a multi-faceted approach, including genetic understanding, epidemiological surveillance, and policy interventions.
  • Genomics and genome editing offer promising avenues for developing durable resistance in wheat.
  • International collaboration and stringent policies on seed movement are crucial to control the spread of MoT.