Metschnikowia gruessii sp. nov., the Teleomorph of Nectaromyces reukaufii but not of Candida reukaufii

Giménez-Jurado, Gabriella

doi:10.1016/s0723-2020(11)80218-3

Cited by 18 publications

(14 citation statements)

References 16 publications

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“…In this study, we tested the hypothesis that phenotypic trait divergence explains co‐occurrence of two congeneric yeast species in floral nectar of European plant species. In Western Europe, microbial communities in individual nectar samples are generally species poor (average of 1.3 culturable yeast species), and about 90% of the culturable yeast isolates obtained from floral nectar belong to the ascomycetous yeasts Metschnikowia reukaufii and M. gruessii (Giménez‐Jurado, ; Brysch‐Herzberg, ; Pozo et al ., ; Alvarez‐Perez and Herrera, ). Preliminary evidence indicates that these two species frequently co‐occur in floral nectar, as they often have been found simultaneously in nectar of the same host species and individual plants, and often even in the same floral nectar sample (Pozo et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Species coexistence in simple microbial communities: unravelling the phenotypic landscape of co‐occurring Metschnikowia species in floral nectar

Pozo

Herrera

Lachance

et al. 2015

Environmental Microbiology

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Identifying the ecological processes that underlie the distribution and abundance of species in microbial communities is a central issue in microbial ecology and evolution. Classical trade-off based niche theories of resource competition predict that co-occurrence in microbial communities is more likely when the residing species show trait divergence and complementary resource use. We tested the prediction that niche differentiation explained the co-occurrence of two yeast species (Metschnikowia reukaufii and M. gruessii) in floral nectar. Assessment of the phenotypic landscape showed that both species displayed a significantly different physiological profile. Comparison of utilization profiles in single versus mixed cultures indicated that these two species did not compete for most carbon and nitrogen sources. In mixed cultures, M. reukaufii grew better in sucrose solutions and in the presence of the antimicrobial compound digitonin than when grown as pure culture. M. gruessii, on the other hand, grew better in mixed cultures in glucose and fructose solutions. Overall, these results provide clear evidence that M. reukaufii and M. gruessii frequently co-occur in nectar and that they differ in their phenotypic response to variation in environmental conditions, suggesting that niche differentiation and resource partitioning are important mechanisms contributing to species co-occurrence in nectar yeast communities.

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Section: Introductionmentioning

confidence: 99%

Species coexistence in simple microbial communities: unravelling the phenotypic landscape of co‐occurring Metschnikowia species in floral nectar

Pozo

Herrera

Lachance

et al. 2015

Environmental Microbiology

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“…U๙der co๙trolled laboratory co๙ditio๙s, commercial Bombus terrestris L. workers are able to discrimi๙ate betwee๙ ๙ectars co๙-tai๙i๙g the two yeast species, bei๙g more attracted to ๙ectars co๙tai๙i๙g M. reukaufii tha๙ those co๙tai๙i๙g M. gruessii . These two yeast species are disti๙ct phe๙otypically, differi๙g i๙ cell a๙d ascus morphology a๙d physiology, e.g., assimilatio๙ of trehalose, osmotolera๙ce ra๙ge a๙d maximum temperature for growth (Bar๙ett & al., 2000;Gimé๙ez-Jurado, 1992;Lacha๙ce 2011).…”

Section: Introductionmentioning

confidence: 99%

Comparative effects of two species of floricolous <em>Metschnikowia</em> yeasts on nectar

Canto¹,

Herrera²,

García³

et al. 2015

Anal. Jard. Bot. Madr.

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Canto, A., Herrera, C.M., García, I.M., García, M., Bazaga, P. 2015.Comparative effects of two species of floricolous Metschnikowia yeasts on nectar. Anales Jard. Bot. Madrid 72(1): e019Nectar yeast communities in southern Spain are dominated by two closely-related species, Metschnikowia reukaufii Pitt & M.W. Mill. and M. gruessii Gim.-Jurado (Ascomycota, Saccharomycetales), although they tend to be distributed differentially across different host plants. We explore here the possibility that the two yeasts play different functional roles in floral nectar by differing in their impact on sugar concentration and composition of nectar. Experiments were undertaken under controlled conditions using bumblebees caught foraging on the flowers of two different host plants each of which is known to harbor predominantly one of the two yeasts. Bumblebees were used as sources of inocula to obtain two groups of samples from the nectar of Helleborus foetidus L. (Ranunculaceae): nectar samples inoculated with M. gruessii and samples inoculated with M. reukaufii. Metschnikowia gruessii was poorly represented in nectar samples, while M. reukaufii was by far the most common and had the highest cell density. Although the two yeasts caused relatively similar changes in nectar sugar composition, which involved increasing fructose and decreasing sucrose proportions, they marginally differed in their quantitative impact on total nectar sugar concentration. Results suggest that differential yeast occurrence across host plants may lead to yeast specialization and modify the outcomes of the plant-pollinator interface. . Ambas levaduras son especies muy cercanas entre sí, pero se distribuyen diferencialmente entre las especies de plantas cuyo néctar las hospeda. En este trabajo se explora la posibilidad de que las levaduras tengan funciones distintas impactando diferencialmente la concentración y composición del néctar. Para esto se realizaron experimentos bajo condiciones controladas usando individuos de abejorros que fueron capturados cuando visitaban flores que albergan predominantemente una de las dos posibles levaduras mencionadas. Los abejorros fueron utilizados como agentes inoculantes naturales en el néctar de Helleborus foetidus L. para obtener dos grupos de muestras, unas con M. reukaufii y otras con M. gruessii. Los resultados mostraron que M. gruessii estuvo pobremente representada en las muestras; en contraste, M. reukaufii fue la más frecuente y de mayor densidad en el néctar. Aun cuando ambas levaduras tuvieron un efecto similar en la composición proporcional de los azúcares en el néctar, aumento de la fructosa y decremento de la sacarosa, las dos especies difieren marginalmente en su impacto en la concentración total de azúcares. Los resultados sugieren que la ocurrencia diferencial de las especies de levaduras entre sus plantas hospederas, puede conducir a una modificación en las interacciones entre las plantas y sus visitantes florales y también a una especialización de levaduras por hospedero.

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“…and honey bees (Apis mellifera L.). The descriptions, drawings and micrographs of characteristic airplane cell configurations (Giménez-Jurado, 1992) in earlier studies suggest that M. gruessii is the most abundant species in nectar. The presence of Metschnikowia in honeys was reported by Magyar et al (2005).…”

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confidence: 82%

Fungal diversity in honeys from northwest Spain and their relationship to the ecological origin of the product

Seijo

Escuredo

Fernández-González

2011

Grana

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Metschnikowia gruessii sp. nov., the Teleomorph of Nectaromyces reukaufii but not of Candida reukaufii

Cited by 18 publications

References 16 publications

Species coexistence in simple microbial communities: unravelling the phenotypic landscape of co‐occurring Metschnikowia species in floral nectar

Species coexistence in simple microbial communities: unravelling the phenotypic landscape of co‐occurring Metschnikowia species in floral nectar

Comparative effects of two species of floricolous <em>Metschnikowia</em> yeasts on nectar

Fungal diversity in honeys from northwest Spain and their relationship to the ecological origin of the product

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