1887

Abstract

Fourteen novel lipomycetaceous yeasts species were isolated from soil samples collected from the Hokkaido, Chiba and Okinawa prefectures of Japan. Phylogenetic analyses of the D1/D2 domains of the large subunit rRNAs and translation elongation factor 1 alpha genes () revealed that five strains of two species from the soil in Furano-shi, Hokkaido were related to and 29 strains representing 12 species from soils in Kamogawa-shi, Chiba and Iriomote Island, Okinawa were in the clade. The two species of form globose or ellipsoid ascospores in their sac-like ascus and pseudohyphae. Furthermore, these species produce ascospores in their pseudohyphae and do not produce an acicular ascus, which is common among the three species including . Therefore, we propose transferring to the genus and amending . Two novel species were described and included in the genus : sp. nov. (holotype NBRC 111233; MycoBank no. MB 829051) and sp. nov. (holotype NBRC 112965; MycoBank no. MB 829053). The 12 species in the clade produce neither ascospores nor pseudohyphae and have different characteristics in assimilating several carbon sources from each other. Thus, we propose that the novel species of be classified as forma asexualis (f.a.). From Kamogawa-shi, Chiba (19 strains representing five species): f.a., sp. nov. (holotype NBRC 111411; MycoBank no. MB 829034), f.a., sp. nov. (holotype NBRC 111424; MycoBank no. MB 829035), f.a., sp. nov. (holotype NBRC 111413; MycoBank no. MB 829036), f.a., sp. nov. (holotype NBRC 112967; MycoBank no. MB 829037), f.a., sp. nov. (holotype NBRC 111420; MycoBank no. MB 829041). From Iriomote island, Okinawa (10 strains representing seven species): f.a., sp. nov. (holotype NBRC 112966; MycoBank no. MB 829042), f.a., sp. nov. (holotype NBRC 110433; MycoBank no. MB 829050), f.a., sp. nov. (holotype NBRC 110436; MycoBank no. MB 829045), f.a., sp. nov. (holotype NBRC 110435; MycoBank no. MB 829046), f.a., sp. nov. (holotype NBRC 110440; MycoBank no. MB 829047), f.a., sp. nov. (holotype NBRC 110434; MycoBank no. MB 829048), f.a., sp. nov. (holotype NBRC 110439; MycoBank no. MB 829049).

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2020-01-16
2020-02-28
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