Yeast communities in two Atlantic rain Forest fragments in Southeast Brazil

Pimenta, Raphael Sanzio; Alves, Priscila D. D.; Almeida, Gabriel Marchesan; Silva, Juliana F.M.; Morais, Paula B.; Corrêa, Angelita Duarte; Rosa, Carlos A.

doi:10.1590/s1517-83822009000100015

Cited by 11 publications

(5 citation statements)

References 20 publications

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“…The soil yeast species composition differed along the altitude gradient in the Brazilian forest domain. Basidiomycetous yeasts were found more often than ascomycetes in the studied soils, which is in agreement with previous reports on yeast species from forest soils (Sláviková and Vadkertiová, 2000;Stringini et al, 2008;Pimenta et al, 2009;Yurkov et al, 2012a;Mestre et al, 2014;Moreira and Vale, 2018). It has been suggested that basidiomycetous yeasts may be dominant in forest soils due to strategies and adaptations such as the production of polysaccharide capsules and stronger ability to use a wide range of carbon sources, including complex compounds (Vishniac, 2006;Connell et al, 2008;Yurkov 2018).…”

Section: Discussionsupporting

confidence: 91%

Yeast species and strains differing along an altitudinal gradient in the Brazilian forest domain

Moreira

Mangaravite

Vieira

et al. 2020

Revista Brasileira De Ciência Do Solo

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Soil microbiota is an important component of the forest biomes, playing important roles in the soil aggregation and cycling of nutrients. Among the soil microorganisms stand out the yeasts, which are unicellular fungi involved in important soil ecological processes. The Brazilian Atlantic Forest is one of the main biodiversity hotspots in the world, and the effect of altitudinal gradient on the distribution patterns of yeast species across this ecosystem has not yet been addressed. Thus, this study aimed to investigate the occurrence and distribution of yeast species in soils along an altitude gradient (404; 1,016; 1,658; and 2,124 m above the sea level) of Serra dos Órgãos National Park located at Rio de Janeiro State, Brazil. Yeast species were described using a culture-based method. Species identification was performed using the fungal barcode locus, the D1/D2 region of 26S rRNA, and the gene genealogy was used to access the intraspecific distribution of strains along the altitudinal gradient. We isolated and identified a total of 76 yeasts including ten species belonging to eight genera. Basidiomycetes predominated over ascomycetes. Saitozyma podzolica and Meyerozyma guilliermondii were isolated at all altitudes. The principal component analysis showed that 88 % of sample distribution is explained by soil properties. For S. podzolica, the genetic genealogy suggested that intraspecific distribution is likely related to similar altitudes. Overall, the species composition and soil properties were modified as altitude was increasing, being more heterogeneous and richness in high altitudes.

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Section: Discussionsupporting

confidence: 91%

Yeast species and strains differing along an altitudinal gradient in the Brazilian forest domain

Moreira

Mangaravite

Vieira

et al. 2020

Revista Brasileira De Ciência Do Solo

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“…H. uvarum and S. cerevisiae have been already isolated from fruits and tree bark, respectively, in Amazonian and Atlantic Rainforests (Morais et al, 1995; Pimenta et al, 2009; Barbosa et al, 2016) as well as from crops of several Drosophila species (see Da Cunha, Shehata & De Oliveira, 1957; Morais et al, 1992; Morais, Pagnocca & Rosa, 2006; Batista et al, 2016). Species such as D. paraguayensis (see Batista et al, 2016) and D. maculifrons (see Da Cunha, Shehata & De Oliveira, 1957), which belong to D. tripunctata and D. guarani groups respectively, both of the Drosophila subgenus, had S. cerevisiae isolated from their crops.…”

Section: Discussionmentioning

confidence: 99%

“…Pimenta et al (2009) states that Drosophila may be a major vector of yeasts in Atlantic Rainforest. Our data shows that species of D. tripunctata and D. guarani groups are preferentially attracted to S. cerevisiae , reflecting their natural association in the wild; while species of subgenus Sophophora such as D. melanogaster , which is preferentially attracted to baits with H. uvarum may be naturally associated with apiculate yeasts.…”

Section: Discussionmentioning

confidence: 99%

Differential attraction of drosophilids to banana baits inoculated withSaccharomyces cerevisiaeandHanseniaspora uvarumwithin a Neotropical forest remnant

Batista

Uno

Chaves

et al. 2017

PeerJ

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BackgroundYeasts are a necessary requisite in the diet of most Drosophila species that, in turn, may vector their dispersal in natural environments. Differential attractiveness experiments and the isolation of yeasts consumed by Drosophila may be informative for characterizing this association. Hanseniaspora uvarum is among the most common yeast species isolated from Drosophila crops, with high attractiveness to drosophilids. Saccharomyces cerevisiae has been widely used to collect flies, and it allows broad sampling of almost all local Drosophila species. Pronounced differences in the field concerning Drosophila attractivity to baits seeded with these yeast species have been previously reported. However, few explicit generalizations have been set. Since late fifties, no field experiments of Drosophila attractivity were carried out in the Neotropical region, which is facing shifts in abiotic and biotic factors. Our objective is to characterize preference behavior that mediates the interaction in the wild among Neotropical Drosophila species and yeasts associated with them. We want to set a broad generalization about drosophilids attracted to these yeasts. Here we present the results of a differential attractiveness experiment we carried out in a natural Atlantic Rainforest fragment to assess the preferences of Drosophila species groups to baits inoculated with H. uvarum and S. cerevisiae.MethodsBoth yeast species were cultured in GYMP broth and separately poured in autoclaved mashed banana that was left fermenting. In the field, we collected drosophilids over five arrays of three different baits: non-inoculated autoclaved banana and banana inoculated with each yeast. In the laboratory the drosophilids were sorted to five sets according to their external morphology and/or genitalia: tripunctata; guarani; willistoni; exotic; and the remaining flies pooled in others.Results and ConclusionsUninoculated banana baits attracted virtually no flies. We found significant departures from random distribution over the other two baits (1:1 proportion) for all sets, except the pooled others. Flies of the sets willistoni and exotic preferred H. uvarum over S. cerevisiae, while the remaining sets were more attracted to S. cerevisiae. Previously, various authors reported similar patterns in attraction experiments with S. cerevisiae and H. uvarum. It is also noteworthy that both yeast species have been isolated from natural substrates and crops of Drosophila species. Taken together, these results suggest that the preferences among Drosophila species groups may be reflecting deep and stable relations with yeast species in natural environments. They can be summarized as: forest dwelling species from subgenus Drosophila (such as tripunctata and guarani groups) are attracted to banana baits seeded with S. cerevisiae; while exotic (as D. melanogaster) and subgenus Sophophora species are preferentially attracted to baits seeded with H. uvarum.

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“…The physiological abilities and species composition of D. fasciola yeast communities differed from those of other forest‐inhabiting Drosophila , and the narrow feeding niches of these flies suggested the use of only part of the substrates available to the flies as food in the forest environment. Pimenta et al (2009) studied the yeast communities associated with fruits, mushrooms, tree exudates, and flies of the genus Drosophila , in two Atlantic Rain Forest fragments. A total of 608 yeast isolates were obtained, belonging to 71 species.…”

Section: Yeast Diversity In Tropical Forests and Related Forest Biome...mentioning

confidence: 99%

Yeasts from tropical forests: Biodiversity, ecological interactions, and as sources of bioinnovation

Rosa,

Lachance,

Limtong

et al. 2023

Yeast

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Tropical rainforests and related biomes are found in Asia, Australia, Africa, Central and South America, Mexico, and many Pacific Islands. These biomes encompass less than 20% of Earth's terrestrial area, may contain about 50% of the planet's biodiversity, and are endangered regions vulnerable to deforestation. Tropical rainforests have a great diversity of substrates that can be colonized by yeasts. These unicellular fungi contribute to the recycling of organic matter, may serve as a food source for other organisms, or have ecological interactions that benefit or harm plants, animals, and other fungi. In this review, we summarize the most important studies of yeast biodiversity carried out in these biomes, as well as new data, and discuss the ecology of yeast genera frequently isolated from tropical forests and the potential of these microorganisms as a source of bioinnovation. We show that tropical forest biomes represent a tremendous source of new yeast species. Although many studies, most using culture‐dependent methods, have already been carried out in Central America, South America, and Asia, the tropical forest biomes of Africa and Australasia remain an underexplored source of novel yeasts. We hope that this review will encourage new researchers to study yeasts in unexplored tropical forest habitats.

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Yeast communities in two Atlantic rain Forest fragments in Southeast Brazil

Cited by 11 publications

References 20 publications

Yeast species and strains differing along an altitudinal gradient in the Brazilian forest domain

Yeast species and strains differing along an altitudinal gradient in the Brazilian forest domain

Differential attraction of drosophilids to banana baits inoculated withSaccharomyces cerevisiaeandHanseniaspora uvarumwithin a Neotropical forest remnant

Yeasts from tropical forests: Biodiversity, ecological interactions, and as sources of bioinnovation

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