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Plant Respiration in the Light and Photorespiration

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 1018

Special Issue Editors


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Guest Editor
Department of Biology, Memorial University of Newfoundland, St. John's, NL, Canada
Interests: plant mitochondria; alternative oxidase; respiratory carbon metabolism; photorespiration; environmental and stress biology; interactions of respiration and photosynthesis; plant responses to global change; plant molecular genetics; plant epigenetics; mitochondrial stress-signaling; reactive oxygen and nitrogen species; anaerobic metabolism; cellular energetics; theoretical biology
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Guest Editor
Department of Plant Physiology, Umea Universitet, Umea, Sweden
Interests: plant sugar metabolism; nucleotide-sugar precursors to polysaccharides; sugar-dependent signal transduction pathways; plant mitochondria; photorespiratory metabolism; respiratory carbon metabolism; environmental and stress biology; interactions of respiration and photosynthesis; plant responses to global change; plant molecular genetics; plant stress-signaling; reactive oxygen and nitrogen species; cellular energetics; theoretical biology

Special Issue Information

Dear Colleagues,

Respiration in the light and photorespiration are two major processes that are closely associated with photosynthetic performance of plants and directly affect their productivity. These pathways function under a wide range of environmental stress conditions and affect plant growth and performance. Their contribution undergoes major alterations in the conditions of global change. A significant body of knowledge describes how photosynthesis responds to changes in key environmental variables such as irradiance, temperature, water and nutrient availability, and elevation of CO2 concentration in the atmosphere. However, the adaptive potential of respiration and its regulation by light and other environmental parameters remains much more uncertain, and the understanding of the molecular mechanism of its interaction with the overall photosynthetic process is generally insufficient. In part, this relates to the complex, diverse, and often-unique roles of respiration and photorespiration in photosynthetic organisms, the presence of non-coupled pathways, metabolic flexibility, and participation of various organelles in the arrangement of respiratory and photorespiratory processes. These include the need to provide extensive substrate for biosynthesis, as well as the need to coordinate and optimize photosynthetic metabolism. In part, these unique roles may rely upon plant-specific respiratory components, found in the cytosol, mitochondrion, peroxisome and vacuole, which introduce various metabolic routes for the processing of respiratory and photorespiratory intermediates.

This Special Issue invites both original research and review articles that advance our understanding of how plant respiration responds to the environment and how the unique components of respiratory metabolism support acclimation to the environment. Contributions that describe interactions between respiration and photosynthesis, or how respiration responds to global change factors, are also welcome.

Prof. Dr. Abir U. Igamberdiev
Prof. Dr. Leszek A. Kleczkowski
Guest Editors

Manuscript Submission Information

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Keywords

  • plant respiratory pathways
  • photorespiration
  • leaf peroxisomes
  • mitochondria in the light
  • acclimation to environment
  • non-coupled respiration
  • electron transport chain
  • plant-specific respiratory components
  • photosynthesis–respiration interactions
  • global change factors
  • plant carbon and nitrogen metabolism
  • plant bioenergetics
  • alternative metabolic pathways

Published Papers (1 paper)

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Review

21 pages, 2044 KiB  
Review
Multiple Roles of Glycerate Kinase—From Photorespiration to Gluconeogenesis, C4 Metabolism, and Plant Immunity
by Leszek A. Kleczkowski and Abir U. Igamberdiev
Int. J. Mol. Sci. 2024, 25(6), 3258; https://doi.org/10.3390/ijms25063258 - 13 Mar 2024
Viewed by 712
Abstract
Plant glycerate kinase (GK) was previously considered an exclusively chloroplastic enzyme of the glycolate pathway (photorespiration), and its sole predicted role was to return most of the glycolate-derived carbon (as glycerate) to the Calvin cycle. However, recent discovery of cytosolic GK revealed metabolic [...] Read more.
Plant glycerate kinase (GK) was previously considered an exclusively chloroplastic enzyme of the glycolate pathway (photorespiration), and its sole predicted role was to return most of the glycolate-derived carbon (as glycerate) to the Calvin cycle. However, recent discovery of cytosolic GK revealed metabolic links for glycerate to other processes. Although GK was initially proposed as being solely regulated by substrate availability, subsequent discoveries of its redox regulation and the light involvement in the production of chloroplastic and cytosolic GK isoforms have indicated a more refined regulation of the pathways of glycerate conversion. Here, we re-evaluate the importance of GK and emphasize its multifaceted role in plants. Thus, GK can be a major player in several branches of primary metabolism, including the glycolate pathway, gluconeogenesis, glycolysis, and C4 metabolism. In addition, recently, the chloroplastic (but not cytosolic) GK isoform was implicated as part of a light-dependent plant immune response to pathogen attack. The origins of glycerate are also discussed here; it is produced in several cell compartments and undergoes huge fluctuations depending on light/dark conditions. The recent discovery of the vacuolar glycerate transporter adds yet another layer to our understanding of glycerate transport/metabolism and that of other two- and three-carbon metabolites. Full article
(This article belongs to the Special Issue Plant Respiration in the Light and Photorespiration)
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