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Microbial interaction mediated programmed cell death in plants.

Lakshman Prasad1, Shabnam Katoch1, Shumaila Shahid1

  • 1Present Address: Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi, 110 012 India.

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Summary
This summary is machine-generated.

Understanding plant-microbe interactions is key to sustaining crop yield. This review details microbe-mediated programmed cell death (PCD) and defense induction in plants against various pathogens.

Keywords:
CompatibilityMicrobesNecrosisProgrammed cell deathReactive oxygen speciesResistanceSystemic acquired resistance

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Area of Science:

  • Plant Pathology
  • Microbiology
  • Molecular Biology

Background:

  • Plant-microbe interactions are crucial for crop yield and involve complex parasitic relationships.
  • Microbes are classified as symbionts, biotrophs, necrotrophs, and hemibiotrophs, each with distinct life cycles and host interactions.
  • Plant-microbe communication occurs via host cell receptors and microbial elicitors, leading to compatible or incompatible reactions.

Purpose of the Study:

  • To review the mechanisms of microbe- or symbiont-mediated programmed cell death (PCD) in plants.
  • To explore defense induction in plants against various microbial pathogens.
  • To discuss the potential of beneficial microbes in inducing systemic resistance.

Main Methods:

  • Literature review of plant-microbe interactions and programmed cell death (PCD).
  • Analysis of molecular and biochemical events regulating plant defense responses.
  • Examination of microbial strategies for host colonization and plant defense evasion.

Main Results:

  • Programmed cell death (PCD) is a plant defense mechanism triggered by biotic and abiotic stresses, restricting pathogen growth.
  • PCD regulation involves complex biochemical events including ROS, nitric oxide, and phytohormone biosynthesis.
  • Plant-microbe interactions result in either compatible (susceptible) or incompatible (resistant) outcomes based on host resistance and pathogen virulence.

Conclusions:

  • Understanding microbe-mediated PCD and plant defense mechanisms is vital for agricultural sustainability.
  • Beneficial microbes offer a promising avenue for inducing systemic resistance in plants against pathogens.
  • Harnessing plant-microbe interactions can lead to novel strategies for enhancing crop yield and resilience.