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Trichoderma Virens, a Plant Beneficial Fungus, Enhances Biomass Production and Promotes Lateral Root Growth Through an Auxin-dependent Mechanism in Arabidopsis

Overview
Journal Plant Physiol
Specialty Physiology
Date 2009 Jan 30
PMID 19176721
Citations 206
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Abstract

Trichoderma species belong to a class of free-living fungi beneficial to plants that are common in the rhizosphere. We investigated the role of auxin in regulating the growth and development of Arabidopsis (Arabidopsis thaliana) seedlings in response to inoculation with Trichoderma virens and Trichoderma atroviride by developing a plant-fungus interaction system. Wild-type Arabidopsis seedlings inoculated with either T. virens or T. atroviride showed characteristic auxin-related phenotypes, including increased biomass production and stimulated lateral root development. Mutations in genes involved in auxin transport or signaling, AUX1, BIG, EIR1, and AXR1, were found to reduce the growth-promoting and root developmental effects of T. virens inoculation. When grown under axenic conditions, T. virens produced the auxin-related compounds indole-3-acetic acid, indole-3-acetaldehyde, and indole-3-ethanol. A comparative analysis of all three indolic compounds provided detailed information about the structure-activity relationship based on their efficacy at modulating root system architecture, activation of auxin-regulated gene expression, and rescue of the root hair-defective phenotype of the rhd6 auxin response Arabidopsis mutant. Our results highlight the important role of auxin signaling for plant growth promotion by T. virens.

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References
1.
Reed R, Brady S, Muday G . Inhibition of auxin movement from the shoot into the root inhibits lateral root development in Arabidopsis. Plant Physiol. 1998; 118(4):1369-78. PMC: 34753. DOI: 10.1104/pp.118.4.1369. View

2.
Leyser H, Lincoln C, Timpte C, Lammer D, Turner J, Estelle M . Arabidopsis auxin-resistance gene AXR1 encodes a protein related to ubiquitin-activating enzyme E1. Nature. 1993; 364(6433):161-4. DOI: 10.1038/364161a0. View

3.
Chung K, Shilts T, Erturk U, Timmer L, Ueng P . Indole derivatives produced by the fungus Colletotrichum acutatum causing lime anthracnose and postbloom fruit drop of citrus. FEMS Microbiol Lett. 2003; 226(1):23-30. DOI: 10.1016/S0378-1097(03)00605-0. View

4.
Gray W, Kepinski S, Rouse D, Leyser O, Estelle M . Auxin regulates SCF(TIR1)-dependent degradation of AUX/IAA proteins. Nature. 2001; 414(6861):271-6. DOI: 10.1038/35104500. View

5.
Pickett F, Wilson A, Estelle M . The aux1 Mutation of Arabidopsis Confers Both Auxin and Ethylene Resistance. Plant Physiol. 1990; 94(3):1462-6. PMC: 1077399. DOI: 10.1104/pp.94.3.1462. View