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How is auxin linked with cellular energy pathways to promote growth?
Author(s) -
Tivendale Nathan D.,
Millar A. Harvey
Publication year - 2022
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/nph.17946
Subject(s) - auxin , biogenesis , photosynthesis , biology , microbiology and biotechnology , cellular respiration , plant hormone , plastid , respiration , biochemistry , metabolism , mitochondrion , botany , chloroplast , gene
Summary Auxin is the ‘growth hormone’ and modulation of its concentration correlates with changes in photosynthesis and respiration, influencing the cellular energy budget for biosynthesis and proliferation. However, the relative importance of mechanisms by which auxin directly influences photosynthesis and respiration, or vice versa, are unclear. Here we bring together recent evidence linking auxin with photosynthesis, plastid biogenesis, mitochondrial metabolism and retrograde signalling and through it we propose three hypotheses to test to unify current findings. These require delving into the control of auxin conjugation to primary metabolic intermediates, translational control under auxin regulation and post‐translational influences of auxin on primary metabolic processes.