The Oxidative Paradox in Low Oxygen Stress in Plants.

Antioxidants (Basel)

PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.

Published: February 2021

AI Article Synopsis

  • Reactive oxygen species (ROS) are influenced by oxygen availability and play a crucial role in how plants respond to low oxygen environments.
  • Plants have specialized mechanisms that detect low oxygen levels, regulating genes that help them adapt by managing ROS levels and related proteins.
  • Nitric oxide (NO) is also important in signaling low oxygen stress, with both ROS and NO serving as key regulators in plant adaptation to flooding situations.

Article Abstract

Reactive oxygen species (ROS) are part of aerobic environments, and variations in the availability of oxygen (O) in the environment can lead to altered ROS levels. In plants, the O sensing machinery guides the molecular response to low O, regulating a subset of genes involved in metabolic adaptations to hypoxia, including proteins involved in ROS homeostasis and acclimation. In addition, nitric oxide (NO) participates in signaling events that modulate the low O stress response. In this review, we summarize recent findings that highlight the roles of ROS and NO under environmentally or developmentally defined low O conditions. We conclude that ROS and NO are emerging regulators during low O signalling and key molecules in plant adaptation to flooding conditions.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7926446PMC
http://dx.doi.org/10.3390/antiox10020332DOI Listing

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