Diversity of yeasts associated with the sea surface microlayer and underlying water along the northern coast of Taiwan

Chang, Chin‐Feng; Lee, Ching-Fu; Lin, Kao-Yung; Liu, Shiu‐Mei

doi:10.1016/j.resmic.2015.08.005

Cited by 13 publications

(7 citation statements)

References 30 publications

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“…This ballast water is released en route or at the destination port to correct for fluctuations in cargo weight ( 37 ). Cryptococcus has been shown to survive in vitro in saline ( 8 ), has been isolated from seawater ( 38 , 39 ), and is known to cause significant morbidity and mortality in marine mammals ( 40 – 42 ), particularly in the PNW ( 43 – 45 ). Again, while only hypothetical, it is possible that a limited number of ships with contaminated ballast water could have transported these pathogens unknowingly to PNW ports and beyond.…”

Section: Discussionmentioning

confidence: 99%

Dating the Cryptococcus gattii Dispersal to the North American Pacific Northwest

Roe

Bowers

Oltean

et al. 2018

mSphere

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The recent emergence of the pathogenic fungus Cryptococcus gattii in the Pacific Northwest (PNW) resulted in numerous investigations into the epidemiological and enzootic impacts, as well as multiple genomic explorations of the three primary molecular subtypes of the fungus that were discovered. These studies lead to the general conclusion that the subtypes identified likely emerged out of Brazil. Here, we conducted genomic dating analyses to determine the ages of the various lineages seen in the PNW and propose hypothetical causes for the dispersal events. Bayesian evolutionary analysis strongly suggests that these independent fungal populations in the PNW are all 60 to 100 years old, providing a timing that is subsequent to the opening of the Panama Canal, which allowed for more direct shipping between Brazil and the western North American coastline, a possible driving event for these fungal translocation events.

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Section: Discussionmentioning

confidence: 99%

Dating the Cryptococcus gattii Dispersal to the North American Pacific Northwest

Roe

Bowers

Oltean

et al. 2018

mSphere

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“…The role of yeast cells in the sea is still unclear although a positive correlationbetween their density and water pollution has been demonstrated long ago(Hagler and Mendonça- Hagler, 1981). Strains of R. diobovata and R. mucilaginosa have been found in the sea surface microlayer, where levels of UV and concentrations of pollutants are particularly high(Chang et al, 2016). Moreover,Wang et al (2016), showed the ability of a marine strain of R. mucilaginosa (Mar-Y3) to degrade dimethyl phthalate esters (DMPE), used in plastic products, cosmetics and insecticides.…”

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confidence: 99%

Basidiomycota isolated from the Mediterranean Sea – Phylogeny and putative ecological roles

et al. 2018

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Basidiomycota are an ecologically and taxonomically diverse fungal phylum, colonizing all terrestrial ecosystems, with 30,000 described species. By contrast, in marine habitats Basidiomycota are underrepresented when compared to the more abundant Ascomycota. Recently, we investigated the marine mycobiota mainly in the Mediterranean Sea, confirming the scarcity of Basidiomycota. However, a low rank taxonomic identification based on morphological features, proved impossible, since most of the strains remained sterile in axenic culture. Nevertheless, considering the great potential and biotechnological value of Basidiomycota, it would be useful to define their precise taxonomic placement. To this end, 34 marine Basidiomycota isolated from different marine substrates underwent molecular analyses and 123 newly generated sequences were obtained and deposited in GenBank. Sequencing of the Internal Transcribed Spacer (nrITS) regions allowed us to affiliate the 34 strains with six classes, but a lower taxonomic identification was reached with a multi-locus phylogenetic analysis.

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“…According to Chang et al (2016), 64.5% of all yeasts isolated from the Taiwanese sea coast contain Rhodotorula. After the yeast URM 7409 was selected, an experimental design (CCD) was carried out, evaluating the operational cultivation factors as presented in Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, not all microorganisms have the desired production capacity. The use of prospecting techniques allows for the discovery of new microorganisms with this potential (Chang et al, 2016;Singh et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the process conditions for the production of microbial carotenoids by the recently isolated Rhodotorula mucilaginosa URM 7409

Machado

Silva

Lago-Vanzela

et al. 2019

Braz. J. Food Technol.

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This study aimed to improve the physical and nutritional process conditions for the production of carotenoids by the newly isolated Rhodotorula mucilaginosa, a red basidiomycete yeast. The carotenoid bioproduction was improved using an experimental design technique, changing the process characteristics of agitation (130 rpm to 230 rpm) and temperature (25 °C to 35 °C) using seven experiments, followed by a 25-1 fractional design to determine the relevant factors that constitute the culture medium (glucose, malt extract, yeast extract, peptone and initial pH). A complete second order experimental design was then carried out to optimize the composition of the culture medium, the variables being yeast extract (0.5 to 3.5 g/L), peptone (1 to 5 g/L) and the initial pH (5.5 to 7.5), with 17 experiments. The maximum carotenoid production was 4164.45 μg/L (252.99 μg/g), obtained in 144 h in YM (yeast malt) medium with 30 g/L glucose, 10 g/L malt extract, 2 g/L yeast extract, 3 g/L peptone, an initial pH 6, 130 rpm and 25 °C, demonstrating the potential of this yeast as a source of bio-pigments. In this work, the nitrogen sources were the factors that most influenced the intracellular accumulation of carotenoids. The yeast R. mucilaginosa presented high production at a bench level and may be promising for commercial production.

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Diversity of yeasts associated with the sea surface microlayer and underlying water along the northern coast of Taiwan

Cited by 13 publications

References 30 publications

Dating the Cryptococcus gattii Dispersal to the North American Pacific Northwest

Dating the Cryptococcus gattii Dispersal to the North American Pacific Northwest

Basidiomycota isolated from the Mediterranean Sea – Phylogeny and putative ecological roles

Evaluation of the process conditions for the production of microbial carotenoids by the recently isolated Rhodotorula mucilaginosa URM 7409

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