Record ID No. |
5199 |
Author(s) |
Erika Sabella; Eliana Nutricati; Alessio Aprile; Antonio Miceli; Carlo Sorce , 2015 |
Affiliation |
Department of Biological and Environmental Sciences and Technologies, University of Salento, via Prov. le Lecce – Monteroni, 73100 Lecce, Italy |
Title |
Arthrinium phaeospermum isolated from Tuber borchii ascomata: the first evidence for a “Mycorrhization Helper Fungus”? |
Source. Vol.(no):Page |
Mycol Progress 14: 59 |
Categories |
Ectomycorrhiza Mycorrhiza General |
Subjects |
General |
Country |
Italy |
Abstracts |
A filamentous fungus was isolated from Tuber borchii Vitt. fruiting bodies, and it was identified as an Arthrinium phaeospermum (Corda) M.B. Ellis strain, an “endophyte” that forms various associations with healthy leaves, stems, and roots of plants. Molecular analysis confirmed the association of this filamentous fungus with the ascocarps of all collection sites in Salento, Apulia (South Italy). An in vitro symbiosis system between Cistus creticus L. and T. borchii was set up; A. phaeospermum appears to be able to promote
mycorrhiza formation in Cistus seedlings, inducing primary
root shortening and an increase of secondary roots, similar to
the effect of Mycorrhization Helper Bacteria (MHB).
Compartmented and uncompartmented bioassays were carried
out to investigate the effects of exudates/volatiles released
by the truffle-hosted fungus on root architecture; the results showed root shortening in compartmented bioassay suggesting that volatiles released by the fungus alone are sufficient to
alter root morphology in early phase of interaction before the mycorrhiza formation. The first evidence for an influence of a truffle-hosted fungus on ectomycorrhizal symbiosis establishment is reported. |