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Related Experiment Video

Updated: Aug 22, 2025

Author Spotlight: Unraveling Plant Responses to Abiotic Stresses Using the PlantScreen Robotic Platform
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ROS generated from biotic stress: Effects on plants and alleviation by endophytic microbes.

Pramod Kumar Sahu1, K Jayalakshmi2, Jyotsana Tilgam1

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|November 10, 2022
PubMed
Summary

Reactive oxygen species (ROS) are vital signaling molecules in plants but can cause damage in excess. Endophytes help plants maintain ROS homeostasis, crucial for managing biotic stress and improving plant health.

Keywords:
ROS - reactive oxygen speciesROS homeostasisbiotic stressendophytesinduced systemic response (ISR)

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Area of Science:

  • Plant Pathology
  • Plant Physiology
  • Microbiology

Background:

  • Aerobic metabolism generates reactive oxygen species (ROS), essential signaling molecules in plants.
  • ROS play a dual role in plant-pathogen interactions, acting as defense signals at low concentrations and causing damage at high concentrations.
  • Plants possess intrinsic mechanisms to manage ROS levels and mitigate oxidative stress.

Purpose of the Study:

  • To review the current understanding of ROS production and signaling in plants.
  • To explore plant endogenous mechanisms for alleviating oxidative stress.
  • To compile recent findings on the role of endophytes in maintaining ROS homeostasis under biotic stress.

Main Methods:

  • Literature review focusing on ROS, plant stress responses, and endophyte-microbe interactions.
  • Analysis of mechanisms by which endophytes influence ROS homeostasis.
  • Synthesis of information on endophyte-mediated ROS scavenging and host plant responses.

Main Results:

  • Endophytes employ diverse strategies, including producing antioxidants and modulating host defenses, to maintain ROS balance.
  • Endophyte-assisted ROS homeostasis is critical for plants facing pathogenic challenges.
  • This review consolidates fragmented knowledge on endophytes' contribution to plant ROS management.

Conclusions:

  • Endophytes are significant players in regulating plant ROS homeostasis, particularly under biotic stress.
  • Harnessing endophytes offers a promising avenue for enhancing plant resilience against pathogens.
  • Further research into endophyte-plant-pathogen interactions is warranted to optimize agricultural applications.