Mechanistic understanding of photorespiration paves the way to a new green revolution

Photorespiration is frequently considered a wasteful and inefficient process. However, mutant analysis demonstrated that photorespiration is essential for recycling of 2-phosphoglycolate in C₃ and C₄ land plants, in algae, and even in cyanobacteria operating carboxysome-based carbon (C) concentratin...

Full description

Saved in:
Bibliographic Details
Published in:The New phytologist 2019-09, Vol.223 (4), p.1762-1769
Main Authors: Eisenhut, Marion, Roell, Marc-Sven, Weber, Andreas P. M.
Format: Article
Language:English
Subjects:
Algae
Arabidopsis - physiology
Arabidopsis - radiation effects
Assimilation
C1 metabolism
Cell Respiration - radiation effects
Chloroplasts
CO2 assimilation
Crop yield
Cyanobacteria
Cytoplasm
Glycolates - metabolism
Green revolution
Light
metabolic interdependency
Metabolism
Mitochondria
Mutants
Nitrogen - metabolism
Oxidoreductions
oxygenation
Peroxisomes
Phenotypes
Photochemical Processes
Photorespiration
Photosynthesis
photosynthetic efficiency
RubisCO
Sulfur
Sulphur
synthetic bypass
Tansley insight
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Photorespiration is frequently considered a wasteful and inefficient process. However, mutant analysis demonstrated that photorespiration is essential for recycling of 2-phosphoglycolate in C₃ and C₄ land plants, in algae, and even in cyanobacteria operating carboxysome-based carbon (C) concentrating mechanisms. Photorespiration links photosynthetic C assimilation with other metabolic processes, such as nitrogen and sulfur assimilation, as well as C₁ metabolism, and it may contribute to balancing the redox poise between chloroplasts, peroxisomes, mitochondria and cytoplasm. The high degree of metabolic interdependencies and the pleiotropic phenotypes of photorespiratory mutants impedes the distinction between core and accessory functions. Newly developed synthetic bypasses of photorespiration, beyond holding potential for significant yield increases in C₃ crops, will enable us to differentiate between essential and accessory functions of photorespiration.
ISSN:0028-646X
1469-8137
DOI:10.1111/nph.15872