Abstract
Auxin is a major phytohormone involved in most aspects of plant growth and development. Generally, auxin is perceived by three distinct receptors: TRANSPORT INHIBITOR RESISTANT1-Auxin/INDOLE ACETIC ACID, S-Phase Kinase-Associated Protein 2A and AUXIN-BINDING PROTEIN1. The auxin perception is regulated by a variety of secondary messenger molecules, including nitric oxide, reactive oxygen species, calcium, cyclic GMP, cyclic AMP, inositol triphosphate, diacylglycerol and by physiological pH. In addition, some small organic molecules, including inositol hexakisphosphate, yokonolide B, p-chlorophenoxyisobutyric acid, toyocamycin and terfestatin A, are involved in auxin signaling. In this review, we summarize and discuss the recent progress in understanding the functions of these secondary messengers and small organic molecules, which are now thoroughly demonstrated to be pervasive and important in auxin perception and signal transduction.
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This work was supported by grants from the Chinese National Science Foundation (31030045 and 31371431) and the Fundamental Research Funds for the Central Universities (223000-861123).
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Communicated by N. Stewart.
D.-W. Di and C. Zhang contribute equally to this work.
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Di, DW., Zhang, C. & Guo, GQ. Involvement of secondary messengers and small organic molecules in auxin perception and signaling. Plant Cell Rep 34, 895–904 (2015). https://doi.org/10.1007/s00299-015-1767-z
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DOI: https://doi.org/10.1007/s00299-015-1767-z