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Review
. 2019 Jul 3:10:851.
doi: 10.3389/fpls.2019.00851. eCollection 2019.

Indole 3-Butyric Acid Metabolism and Transport in Arabidopsis thaliana

Suresh Damodaran  1 , Lucia C Strader  1   2   3
Affiliations
Review

Indole 3-Butyric Acid Metabolism and Transport in Arabidopsis thaliana

Suresh Damodaran et al. Front Plant Sci. .

Abstract

Auxin is a crucial phytohormone involved in multiple plant developmental processes. Spatiotemporal regulation of auxin levels is necessary to achieve development of organs in the proper place and at the proper time. These levels can be regulated by conversion of auxin [indole 3-acetic acid (IAA)] from its conjugated forms and its precursors. Indole 3-butyric acid (IBA) is an auxin precursor that is converted to IAA in a peroxisomal β-oxidation process. In Arabidopsis, altered IBA-to-IAA conversion leads to multiple plant defects, indicating that IBA contributes to auxin homeostasis in critical ways. Like IAA, IBA and its conjugates can be transported in plants, yet many IBA carriers still need to be identified. In this review, we discuss IBA transporters identified in Arabidopsis thus far, including the pleiotropic drug resistance (PDR) members of the G subfamily of ATP-binding cassette transporter (ABCG) family, the TRANSPORTER OF IBA1 (TOB1) member of the major facilitator superfamily (MFS) family and hypothesize other potential IBA carriers involved in plant development.

Keywords: ATP-binding cassette transporter; TRANSPORTER OF IBA1; auxin; indole-3-butyric acid; phytohormone; transporters.

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Figures

Figure 1
Figure 1
Cellular model of IAA and IBA transporters. IAA and IBA are indolic compounds with two and four carbon side chains, respectively. Graphical representation of a cell with different transport proteins involved in transport of IAA and IBA.
See this image and copyright information in PMC

References

    1. Adham A. R., Zolman B. K., Millius A., Bartel B. (2005). Mutations in Arabidopsis acyl-CoA oxidase genes reveal distinct and overlapping roles in beta-oxidation. Plant J. 41, 859–874. 10.1111/j.1365-313X.2005.02343.x, PMID: - DOI - PubMed
    1. Bartel B., Fink G. R. (1995). ILR1, an amidohydrolase that releases active indole-3-acetic acid from conjugates. Science 268, 1745–1748. 10.1126/science.7792599, PMID: - DOI - PubMed
    1. Blommaert K. L. J. (1954). Growth and inhibiting substances in relation to the rest period of the potato tuber. Nature 174, 970–972. 10.1038/174970b0 - DOI - PubMed
    1. Brumos J., Robles L. M., Yun J., Vu T. C., Jackson S., Alonso J. M., et al. . (2018). Local auxin biosynthesis is a key regulator of plant development. Dev. Cell 47, 306–318.e305. 10.1016/j.devcel.2018.09.022, PMID: - DOI - PubMed
    1. Campanella J. J., Bakllamaja V., Restieri T., Vomacka M., Herron J., Patterson M., et al. (2003a). Isolation of an ILR1 auxin conjugate hydrolase homolog from Arabidopsis suecica. Plant Growth Regul. 39, 175–181. 10.1023/A:1022528318188 - DOI