Journal
PLANT PHYSIOLOGY
Volume 191, Issue 4, Pages 2150-2166Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/plphys/kiad054
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Plant respiration is important for supporting cellular processes and the global carbon cycle. Modulating plant respiration can increase plant yield and mitigate climate change effects. Modeling plant respiration has seen less effort compared to photosynthesis, but recent advances have improved the understanding of the process. The review highlights the need for coupling biochemical models of respiration with acclimation and adaptation models for effective usage in breeding and climate scenario modeling.
Plant respiration not only provides energy to support all cellular processes, including biomass production, but also plays a major role in the global carbon cycle. Therefore, modulation of plant respiration can be used to both increase the plant yield and mitigate the effects of global climate change. Mechanistic modeling of plant respiration at sufficient biochemical detail can provide key insights for rational engineering of this process. Yet, despite its importance, plant respiration has attracted considerably less modeling effort in comparison to photosynthesis. In this update review, we highlight the advances made in modeling of plant respiration, emphasizing the gradual but important change from phenomenological to models based on first principles. We also provide a detailed account of the existing resources that can contribute to resolving the challenges in modeling plant respiration. These resources point at tangible improvements in the representation of cellular processes that contribute to CO2 evolution and consideration of kinetic properties of underlying enzymes to facilitate mechanistic modeling. The update review emphasizes the need to couple biochemical models of respiration with models of acclimation and adaptation of respiration for their effective usage in guiding breeding efforts and improving terrestrial biosphere models tailored to future climate scenarios.
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