Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Shih Feng Fu, Jyuan Yu Wei, Hung Wei Chen, Yen Yu Liu, Hsueh Yu Lu, Jui Yu Chou

Research output: Contribution to journalReview articlepeer-review

61 Citations (Scopus)


Plants as well as microorganisms, including bacteria and fungi, produce indole-3-acetic acid (IAA). IAA is the most common plant hormone of the auxin class and it regulates various aspects of plant growth and development. Thus, research is underway globally to exploit the potential for developing IAA-producing fungi for promoting plant growth and protection for sustainable agriculture. Phylogenetic evidence suggests that IAA biosynthesis evolved independently in bacteria, microalgae, fungi, and plants. Present studies show that IAA regulates the physiological response and gene expression in these microorganisms. The convergent evolution of IAA production leads to the hypothesis that natural selection might have favored IAA as a widespread physiological code in these microorganisms and their interactions. We summarize recent studies of IAA biosynthetic pathways and discuss the role of IAA in fungal

Original languageEnglish
JournalPlant Signaling and Behavior
Issue number8
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Plant Science

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