Fig. 6: A working model for Om19-enhanced rooting of microcuttings. | Horticulture Research

Fig. 6: A working model for Om19-enhanced rooting of microcuttings.

From: Ericoid mycorrhizal fungus enhances microcutting rooting of Rhododendron fortunei and subsequent growth

Fig. 6

Microcuttings of Rhododendron fortunei stuck in a sterilized peat-based substrate inoculated with Om19. Om19 was able to produce a high concentration of tryptophan (Trp), which was used for synthesizing indole-3-acetic acid (IAA) through indole-3-pyruvate (IPA) to promote mycelium growth. The IAA may also induce AR formation in microcuttings. Meanwhile, the high Trp may catalyze biosynthesis of IAA in plant cells as YUC3, a key gene in plant biosynthesis of IAA, was highly induced. IAA produced by Om19 and plant could enhance AR formation

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