Title: Host plant stimulates hypaphorine accumulation in <i>Pisolithus tinctorius</i> hyphae during ectomycorrhizal infection while excreted fungal hypaphorine controls root hair development
Abstract:summary The hypaphorine concentration in Pisolithus tinctorius Coker & Couch hyphae colonizing Eucalyptus roots was 3 to 5 times higher than in adjacent parts of the fungal colony. This phenomenon...summary The hypaphorine concentration in Pisolithus tinctorius Coker & Couch hyphae colonizing Eucalyptus roots was 3 to 5 times higher than in adjacent parts of the fungal colony. This phenomenon, observed 24 h after inoculation, was also recorded in several‐month‐old, well‐established ectomycorrhizas. Accumulation was controlled by specific root‐derived diffusible molecules: it can be induced through a membrane, but not by non‐host plants. In pure culture, high hypaphorine concentration was found only in the youngest mycelium, i.e. the outer 2 mm of the colony. Fungal hypaphorine had no IAA‐like activity on Eucalyptus root development and therefore could not be considered as an auxin analogue; instead, a strong reduction of root hair elongation was recorded.Read More
Publication Year: 1997
Publication Date: 1997-07-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 86
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