Redox Signaling and Photorespiration in Abiotic Stress Responses
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 October 2022) | Viewed by 2874
Special Issue Editor
Interests: redox signaling; chemical genetics; histone post-translational modifications, epigenetics, proteomics, metabolomics
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Plants experiencing adverse environmental conditions accumulate reactive oxygen species (ROS) that are partially reduced (superoxide radicals, hydrogen peroxide, and hydroxyl radicals) or excited (singlet oxygen) forms of O2. Historically, excessive ROS levels associated with abiotic stresses have been exclusively seen as triggers of oxidative stress characterized by indiscriminate oxidative attack on proteins, DNA, and lipids. However, apart from their damaging nature, ROS also initiate, integrate, and fine-tune numerous signaling cascades involved in plant growth, development, and defense. Hydrogen peroxide (H2O2) has attracted significant attention due to its relative stability, transmembrane mobility, and direct sensing by receptor proteins. A major source of H2O2 in illuminated leaves is the process of photorespiration, a multistep metabolic pathway initiated by the inefficient and promiscuous nature of Rubisco (D-ribulose 1,5-bisphosphate carboxylase/oxygenase). Photorespiratory H2O2 production is especially pronounced under abiotic stresses that substantially increase the rates of photorespiration.
The modulation of photorespiration and associated redox signaling mechanisms remains a promising avenue to improve crop yield and performance under adverse environmental conditions. In this Special Issue, we will try to capture new knowledge and opinions that contribute to this ongoing effort.
Dr. Pavel Kerchev
Guest Editor
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Keywords
- photorespiration
- redox signaling
- abiotic stress
