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Sugiyamaella mastotermitis sp. nov. and Papiliotrema odontotermitis f.a., sp. nov. from the gut of the termites Mastotermes darwiniensis and Odontotermes obesus.

Two novel yeast species were isolated from the guts of two different termite species. A new member of the genus Sugiyamaella was isolated from the hindgut and nest material of the lower Australian termite Mastotermes darwiniensis. The second novel yeast species, isolated from the higher termite Odontotermes obesus, was identified as a member of the genus Papiliotrema. Both yeast species were able to hydrolyse xylan, methylumbelliferyl β-xylobiose and methylumbelliferyl β-xylotriose. The ability to debranch different hemicellulose side chains and growth without the addition of external vitamins was observed. A symbiotic role of the novel yeast species is indicated, especially in respect to xylan degradation and the production of vitamins. Here, we describe these species as Sugiyamaella mastotermitis sp. nov., MycoBank 816574 (type strain MD39VT=DSM 100793T=CBS 14182T), and Papiliotrema odontotermitis f.a., sp. nov., MycoBank 816575 (type strain OO5T=DSM 100791T=CBS 14181T). Additionally, we transfer Candida qingdaonensis to the genus Sugiyamaella and propose the following combination: Sugiyamaella qingdaonensis f.a., comb. nov., MycoBank 816576.