Aspergillus atacamensis and A. salisburgensis: two new halophilic species from hypersaline/arid habitats with a phialosimplex-like morphology

Extremophiles : Life Under Extreme Conditions
Livia MartinelliGuadalupe Piñar

Abstract

Halophilic fungal strains isolated from historical wooden staircase in a salt mine in Austria, and from wall biofilm and soil of a cave in the Coastal Range of the hyperarid Atacama Desert in Chile were characterised and described newly as Aspergillus salisburgensis and Aspergillus atacamensis. Morphological characters including solitary phialides producing solitary conidia and conidia in chains and/or heads suggested affinity to Aspergillus subgenus Polypaecilum. Strains required salt for growth, grew optimally on media with 10-25% NaCl and at 15-28 °C. These values are similar to those observed for Aspergillus salinarus comb. nov. (Phialosimplex salinarum), while the ex-type strains of Aspergillus sclerotialis, Aspergillus chlamydosporus and Aspergillus caninus (all belonging to Aspergillus subgen. Polypaecilum) grew optimally at 0-5% NaCl and showed fastest growth at 28-37 °C. Phylogenetic analyses on the basis of rDNA sequences, RAPD-PCR fingerprint patterns, and cellobiohydrolase gene (cbh-I) polymorphism clustered the strains into three groups and supported their taxonomic recognition as A. salinarus, A. atacamensis and A. salisburgensis. On the basis of phylogenetic inferences, also Sagenomella keratitidis is newly combi...Continue Reading

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Citations

Mar 9, 2018·Antonie van Leeuwenhoek·Iara F SantiagoLuiz H Rosa
Jul 17, 2019·Journal of Applied Microbiology·A M SayedM E Rateb
Jun 23, 2019·Extremophiles : Life Under Extreme Conditions·Sophia González-MartínezAmelia Portillo-López
Jul 14, 2018·Computational and Structural Biotechnology Journal·Chi-Ching TsangPatrick C Y Woo
Jan 11, 2018·Studies in Mycology·J B TanneyK A Seifert

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Datasets Mentioned

BETA
AY373864
KF274689
GU973651
KF815665
KX900623
KX900613
KX900629
EXF-10244
KX900621
KX900610

Methods Mentioned

BETA
PCR
electrophoresis
scanning electron microscopy
genotyping

Software Mentioned

ClustalW
MEGA
BLAST

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