1,721,153 research outputs found
La valutazione di convenienza alla realizzazione del piano d’impresa: aspetti di valutazione delle Joint-Venture
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Investments in Innovation and Knowledge in Agri-Food Firms: Performance and Financial Sustainability in the Pork Meat Processing Sector
No full textA quick and precise technique for identifying ectomycorrhizas by PCR
No full textA rapid procedure was developed to amplify ITS fragments directly from Tuber ectomycorrhizas either synthesized in a greenhouse or collected from the field. The addition of Bovine Serum Albumin (BSA) to the reaction mixtures overcame the presence of reaction inhibitors present in fungal and root cells, and enabled the amplification of the ITS regions directly from ectomycorrhizal tissues. This method is cheaper and less time-consuming than conventional procedures, and reduces the time required from 1-4 h to a few minutes. It is also much more sensitive, allowing the identification of just a small fragment of a mycorrhizal root tip. Because of this it is possible to select only the target fungal tissue and hence minimise the risk of contamination by saprobic or other mycorrhizal species. The method also avoids the use of toxic or hazardous substances. This method could have a wider application in other areas of applied mycology. © 2005 The British Mycological Society
Effects of fungicides on tuber borchii and hebeloma sinapizans ectomycorrhizas
No full textCompeting ectomycorrhizal fungi can cause problems during the commercial production of edible Tuber species infected plants in greenhouses and later when infected plants are transplanted to the field. We investigated the effect of selective fungicides on Tuber borchii, in the presence of Hebeloma sinapizans, both in vitro and during the production of T. borchii infected Quercus pubescens. Oxycarboxin completely suppressed the growth of H. sinapizans but had only a weak fungitoxic effect on the growth of T. borchii both in vitro and on Q. pubescens roots. In contrast, other fungicides either suppressed both fungi or T. borchii more than H. sinapizans
Il check up finanziario delle PMI reggiane: capire i numeri e la sostenibilità del ciclo gestionale d’impresa
No full textCharacterization of Tuber borchii and Arbutus unedo mycorrhizas
No full textFor the first time, arbutoid mycorrhizas established between Tuber borchii and Arbutus unedo were described. Analyzed mycorrhizas were from one T. borchii natural truffle ground, dominated by Pinus pinea, as well as synthesized in greenhouse conditions. A. unedo mycorrhizas presented some typical characteristics of ectomycorrhizas of T. borchii. However, as in arbutoid mycorrhizas, ramification was cruciform and intracellular colonization in epidermal cells was present. The ability of T. borchii to form ectomycorrhizas with A. unedo opens up the possibility to also use this fruit plant for truffle cultivation. This represents an important economic opportunity in Mediterranean areas by combining both the cultivation of precious truffles and the production of edible fruits which are used fresh or in food delicacies
Isolamento, identificazione e attività cellulosolitica di microrganismi fungini associati al biodeterioramento di un dipinto su tela del XIXesimo secolo
No full textDa un dipinto ad olio del XIX secolo che presentava diversi danni di natura microbiologica sulla tela di supporto, sono stati ottenuti 21 isolati fungini ed un attinomicete. Gli isolati sono stati identificati in base a caratteri biometrici e morfologici e/o biomolecolari. E' stato, inoltre, condotto un test in vitro per verificarne il grado di attività deteriogena su cellulosa. Oltre il 50% degli isolati possedeva tale attività, un isolato di Penicllium citrinum ed uno di P. griseofulvum hanno evidenziato l'attività deteriogena più elevata
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