Two new amycelial Candida isolated from decayed wood in the evergreen rainy Valdivian forest of southern Chile

Ramírez, Carlos; González, Aldo

doi:10.1007/bf00436438

Cited by 15 publications

(2 citation statements)

References 8 publications

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“…Like the latter species, C. rancensis is another yeast that was present only in the nectar, on the proboscis and in the digestive tract of bumblebees (Table 2) in the current study. The species was described in 1984 by Ramirez and Gonzales [62] and later suspected to be synonymous with M. reukaufii [60]. Only in a very recent study [63] C. rancensis was shown to be a separate species.…”

Section: Candida Rancensismentioning

confidence: 97%

Ecology of yeasts in plantâbumblebee mutualism in Central Europe

Brysch‐Herzberg

2004

FEMS Microbiology Ecology

220

283

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Yeast community involved in plant-bumblebee mutualism was investigated in three successive years. Yeasts were isolated from floral nectar, bumblebee queens after hibernation, bumblebee workers, and the honey provisions in nests. From the distribution of yeast species in the various microhabitats in the course of the year their ecology was assessed. Nectar of numerous plant species belonging to various plant families was analyzed in order to uncover possible impacts on the yeasts present in the nectar. Only ascomycetous yeasts were autochthonous members of the communities in the plant-bumblebee mutualism. Species in the Metschnikowia clade, the Starmarella clade, and the genera Debaryomyces and Zygosaccharomyces were associated with the mutualism. Some species appeared highly specialized, whereas others had a broader distribution. While physical and chemical properties of nectar had only limited influence on the abundance of nectar yeasts, the attractiveness of plants to the flower-visiting insects appears to have had a greater impact on the abundance and frequency of yeasts in the nectar of different plant species.

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Section: Candida Rancensismentioning

confidence: 97%

Ecology of yeasts in plantâbumblebee mutualism in Central Europe

Brysch‐Herzberg

2004

FEMS Microbiology Ecology

220

283

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“…filamentosus has been reported in another member of K. quercitrusa , strain NRRL Y-5392, although described as pseudohyphae ( Kurtzman et al 2011c ). In addition, other members of the Kurtzmaniella clade, such as Candida railenensis , also show hyphae formation under certain conditions ( Ramírez and González 1984 ; Kurtzman et al 2011c ). We observed that this phenotype is highly variable and dependent on factors that are common, for example, among Candida species, namely: carbon source and concentration, pH, and aeration level ( Caplice and Moran 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Isolation, characterization, and genome assembly of Barnettozyma botsteinii sp. nov. and novel strains of Kurtzmaniella quercitrusa isolated from the intestinal tract of the termite Macrotermes bellicosus

Arrey

Murphy

et al. 2021

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Bioconversion of hemicelluloses into simpler sugars leads to production of a significant amount of pentose sugars, such as D-xylose. However, efficient utilization of pentoses by conventional yeast production strains remains challenging. Wild yeast strains can provide new industrially relevant characteristics and efficiently utilize pentose sugars. To explore this strategy, we isolated gut-residing yeasts from the termite Macrotermes bellicosus collected in Comoé National Park, Côte d´Ivoire. The yeasts were classified through their ITS/LSU sequence, their genomes were sequenced and annotated. We identified a novel yeast species, which we name Barnettozyma botsteinii sp. nov. 1118T (MycoBank: 833563, CBS 16679T and IBT 710) and two new strains of Kurtzmaniella quercitrusa: var. comoensis (CBS 16678, IBT 709) and var. filamentosus (CBS 16680, IBT 711). The two K. quercitrusa strains grow 15% faster on synthetic glucose medium than Saccharomyces cerevisiae CEN.PKT in acidic conditions (pH = 3.2) and both strains grow on D-xylose as the sole carbon source at a rate of 0.35 h−1. At neutral pH, the yeast form of K. quercitrusa var. filamentosus, but not var. comoensis, switched to filamentous growth in a carbon source dependent manner. Their genomes are 11.0-13.2 Mb in size and contain between 4888 and 5475 predicted genes. Together with closely related species, we did not find any relationship between gene content and ability to grow on xylose. Besides its metabolism, K. quercitrusa var. filamentosus also has a large potential as a production organism, because of its capacity to grow at low pH and to undergo a dimorphic shift.

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