Dynamic Redox-Dependent Adjustment and Signaling in Plants

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 9046

Special Issue Editors


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Guest Editor
Botanisches Institut und Botanischer Garten, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany
Interests: redox regulation; metabolite shuttling; energy metabolism; alternative electron transport pathways; primary metabolism; adaptation

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Guest Editor
Plant Biotechnology, Faculty of Biology, Bielefeld University, Bielefeld, Germany
Interests: signaling pathways under abiotic stress; signal integration under stress; transcription factor regulation; transcriptional and metabolic adaptation under stress

Special Issue Information

Dear Colleagues,

The sessile lifestyle of plants exposes them to large external variations ranging from drought, high light, floods and salinity to heavy metal stress, nutrient depletion and pathogen attack. These stresses result in the generation of reactive oxygen species (ROS), which, at moderate levels, act as pivotal signaling molecules that initiate acclimation and adaptation responses. In excess, however, they lead to oxidative stress or even cell death. Hence, ROS formation needs to be tightly controlled to balance its beneficial signaling role versus damaging effects. Through the course of evolution, land plants have developed various protective mechanisms to cope with life in a fluctuating environment. These mechanisms rely on the cellular redox network that integrates information from metabolism and the environment to fine‐tune plant growth and defense. Plant cells contain a multitude of enzymes that actively form ROS upon stress to provoke a signaling cascade. Emerging roles for thiol redox regulation of stress-related proteins that detect deviations from redox homeostasis allow for active participation in ROS-dependent signaling events during stress. These signaling cascades not only activate adaptation responses but also focus on maintaining redox homeostasis through the regulation of the antioxidant pathway.

This Special Issue on “Dynamic Redox-Dependent Adjustment and Signaling in Plants” welcomes research articles investigating redox metabolism, redox sensing, and redox signaling in the broadest sense. We also appreciate the submission of full review articles that critically assess and discuss the current state of the art.

Dr. Jennifer Selinski
Prof. Dr. Romy Schmidt
Guest Editors

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Keywords

  • energy metabolism
  • redox homeostasis
  • redox modifications
  • redox regulation
  • stress adaptation
  • transcriptional network
  • signaling component
  • thiol switch

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Published Papers (1 paper)

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Review

30 pages, 1739 KiB  
Review
Try or Die: Dynamics of Plant Respiration and How to Survive Low Oxygen Conditions
by Jay Jethva, Romy R. Schmidt, Margret Sauter and Jennifer Selinski
Plants 2022, 11(2), 205; https://doi.org/10.3390/plants11020205 - 13 Jan 2022
Cited by 30 | Viewed by 8292
Abstract
Fluctuations in oxygen (O2) availability occur as a result of flooding, which is periodically encountered by terrestrial plants. Plant respiration and mitochondrial energy generation rely on O2 availability. Therefore, decreased O2 concentrations severely affect mitochondrial function. Low O2 [...] Read more.
Fluctuations in oxygen (O2) availability occur as a result of flooding, which is periodically encountered by terrestrial plants. Plant respiration and mitochondrial energy generation rely on O2 availability. Therefore, decreased O2 concentrations severely affect mitochondrial function. Low O2 concentrations (hypoxia) induce cellular stress due to decreased ATP production, depletion of energy reserves and accumulation of metabolic intermediates. In addition, the transition from low to high O2 in combination with light changes—as experienced during re-oxygenation—leads to the excess formation of reactive oxygen species (ROS). In this review, we will update our current knowledge about the mechanisms enabling plants to adapt to low-O2 environments, and how to survive re-oxygenation. New insights into the role of mitochondrial retrograde signaling, chromatin modification, as well as moonlighting proteins and mitochondrial alternative electron transport pathways (and their contribution to low O2 tolerance and survival of re-oxygenation), are presented. Full article
(This article belongs to the Special Issue Dynamic Redox-Dependent Adjustment and Signaling in Plants)
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