Journal
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
Volume 99, Issue 3, Pages 635-642Publisher
SPRINGER
DOI: 10.1007/s10482-010-9536-z
Keywords
New yeast species; Candida queiroziae; Cellobiose-fermenting yeast; Rotting wood; Atlantic Rain Forest
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Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fundacao do Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG)
- Natural Science and Engineering Research Council of Canada
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Eight strains of a novel yeast species were isolated from rotting wood and wood-boring insects in Atlantic Rain Forest ecosystems in Brazil. Sequences of the D1/D2 domains of the large subunit of the rRNA gene showed that the yeast belongs to the Scheffersomyces clade and that it is related to Candida lignicola and Candida coipomoensis. The new species was isolated from rotting wood of three different localities and a wood-boring insect suggesting that these substrates are its ecological niche. This new yeast species is able to assimilate cellobiose and other compounds related to rotting wood. Strong fermentation of cellobiose in Durham tubes was observed for the strains of this new yeast. The new species produced an intracellular beta-glucosidase responsible for cellobiose hydrolysis. The novel species, Candida queiroziae sp. nov., is proposed to accommodate these isolates. The type strain of C. queiroziae is UFMG-CLM 5.1(T) (=CBS 11853(T) = NRRL Y-48722(T)).
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