Two new cellulolytic fungal species isolated from a 19th-century art collection

 

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Yazarlar: Coronado Ruiz, Carolina, Avendaño Vega, Roberto, Escudero Leyva, Efraín, Conejo Barboza, Geraldine, Chaverri Echandi, Priscila, Chavarría Vargas, Max
Materyal Türü: artículo original
Yayın Tarihi:2018
Diğer Bilgiler:The archive of the Universidad de Costa Rica maintains a nineteenth-century French collection of drawings and lithographs in which the biodeterioration by fungi is rampant. Because of nutritional conditions in which these fungi grew, we suspected that they possessed an ability to degrade cellulose. In this work our goal was to isolate and identify the fungal species responsible for the biodegradation of a nineteenth-century art collection and determine their cellulolytic activity. Fungi were isolated using potato-dextrose-agar (PDA) and water-agar with carboxymethyl cellulose (CMC). The identifcation of the fungi was assessed through DNA sequencing (nrDNA ITS and α-actin regions) complemented with morphological analyses. Assays for cellulolytic activity were conducted with Gram’s iodine as dye. Nineteen isolates were obtained, of which seventeen were identifed through DNA sequencing to species level, belonging mainly to genera Arthrinium, Aspergillus, Chaetomium, Cladosporium, Colletotrichum, Penicillium and Trichoderma. For two samples that could not be identifed through their ITS and α-actin sequences, a morphological analysis was conducted; they were identifed as new species, named Periconia epilithographicola sp. nov. and Coniochaeta cipronana sp. nov. Qualitative tests showed that the fungal collection presents important cellulolytic activity.
Ülke:Kérwá
Kurum:Universidad de Costa Rica
Repositorio:Kérwá
Dil:Inglés
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/89584
Online Erişim:https://www.nature.com/articles/s41598-018-24934-7
https://hdl.handle.net/10669/89584
Anahtar Kelime:SPECIES
FUNGI
BIOLOGY