d -Xylose fermentation, xylitol production and xylanase activities by seven new species of Sugiyamaella

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2016
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Abstract
Sixteen yeast isolates identified as belonging to the genus Sugiyamaella were studied in relation to D-xylose fermentation, xylitol production, and xylanase activities. The yeasts were recovered from rotting wood and sugarcane bagasse samples in different Brazilian regions. Sequence analyses of the internal transcribed spacer (ITS) region and the D1/D2 domains of large subunit rRNA gene showed that these isolates belong to seven new species. The species are described here as Sugiyamaella ayubii f.a., sp. nov. (UFMG-CM-Y607T = CBS 14108T), Sugiyamaella bahiana f.a., sp. nov. (UFMG-CM-Y304T = CBS 13474T), Sugiyamaella bonitensis f.a., sp. nov. (UFMG-CM-Y608T = CBS 14270T), Sugiyamaella carassensis f.a., sp. nov. (UFMG-CM-Y606T = CBS 14107T), Sugiyamaella ligni f.a., sp. nov. (UFMG-CM-Y295T = CBS 13482T), Sugiyamaella valenteae f.a., sp. nov. (UFMG-CM-Y609T = CBS 14109T) and Sugiyamaella xylolytica f.a., sp. nov. (UFMG-CM-Y348T = CBS 13493T). Strains of the described species S. boreocaroliniensis, S. lignohabitans, S. novakii and S. xylanicola, isolated from rotting wood of Brazilian ecosystems, were also compared for traits relevant to xylose metabolism. S. valenteae sp. nov., S. xylolytica sp. nov., S. bahiana sp. nov., S. bonitensis sp. nov., S. boreocarolinensis, S. lignohabitans and S. xylanicola were able to ferment d-xylose to ethanol. Xylitol production was observed for all Sugiyamaella species studied, except for S. ayubii sp. nov. All species studied showed xylanolytic activity, with S. xylanicola, S. lignohabitans and S. valenteae sp. nov. having the highest values. Our results suggest these Sugiyamaella species have good potential for biotechnological applications.
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Authors Letícia M. F. Sena;Camila G. Morais;Mariana R. Lopes;Renata O. Santos;Ana P. T. Uetanabaro;Paula B. Morais;Marcos J. S. Vital;Marcos A. de Morais;Marc-André Lachance;Carlos A. Rosa;Letícia M. F. Sena;Camila G. Morais;Mariana R. Lopes;Renata O. Santos;Ana P. T. Uetanabaro;Paula B. Morais;Marcos J. S. Vital;Marcos A. de Morais;Marc-André Lachance;Carlos A. Rosa;
Journal antonie van leeuwenhoek
Year 2016
DOI
doi:10.1007/s10482-016-0775-5
URL
https://link.springer.com/article/10.1007/s10482-016-0775-5
Keywords
Microbiology plant sciences medical microbiology soil science & conservation

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