Debaryomyces
Dongyou Liu in Handbook of Foodborne Diseases, 2018
The genus Debaryomyces comprises generalist species of salt- and cold-tolerant ascomycetous yeasts able to colonize extreme environments, diverse ecological niches (e.g., soil, fruits, seawater, plants, insects, and air) and also the base of Arctic polythermal glaciers as well as a variety of fermented food products.1,2 The most representative species is Debaryomyces hansenii with its anamorph Candida famata. D. hansenii is extremophilic, due to its osmo-, xero-, and halo-tolerance, showing remarkable phenotypic plasticity and robust genotypes that allow it to persist in highly contrasting environments without needing to adapt to local conditions. D. hansenii is the most frequently encountered species of the genus in extreme cold, dry, salty, acidic, and deep-sea habitats.1–4
Preparation and Health Benefits of Rice Beverages From Ethnomedicinal Plants: Case Study in North-East of India
Megh R. Goyal, Arijit Nath, Rasul Hafiz Ansar Suleria in Plant-Based Functional Foods and Phytochemicals, 2021
Saccharomyces cereviseae in all traditional fermented drinks [60], Wickerhamomyces anomalus inchubitchi and wanti in Garo hills [42] were also identified. A metagenomic approach in xaj-pitha of Assam revealed the presence of fungi Mucor circinelloides, Rhizopus delemar and Aspergillus sp., budding yeast Wickerhamomyces ciferrii, Meyerozyma guilliermondii, and Debaryomyces hansenii, yeasts Dekkera bruxellensis and Ogataea parapolymorpha besides the dominance of LAB, like Lactobacillus plantarum, Lactobacillus brevis, Lactobacillus pseudomesenteroides, Leuconostoc lactis, Lactococcus lactis, Weissella paramesenteroides, and Weissella cibaria[11]. A study reported the isolation of Enterococcus sp. from fermented fish in Meghalaya [86], which produces bioactive compounds with antimicrobial properties [6].
Candida
Dongyou Liu in Laboratory Models for Foodborne Infections, 2017
Since the Candida genus is integrated by asexual yeast species, several other genera have Candida anamorphs. Thus, some Candida anamorphs are frequently found in some food such as Debaryomyces hansenii (anamorph C. famata) or Kluyveromyces marxianus (anamorph C. kefyr). It should be noted that both species are used as commercial starter cultures and are included in the QPS (Qualified Presumption of Safety) list developed by the European Food Safety Authority (EFSA).23C. kefyr appears to be an emerging pathogen.3 Nevertheless, until now, there are no safety concerns about the use of K. marxianus because of the history of its apparent safe use and the rarity of its infections in human beings.24C. famata, found in food products such as cheese and meat products,12,18,25 has been associated with occasional infections.3,8,9,23–25
Exogenous fungal quorum sensing molecules inhibit planktonic cell growth and modulate filamentation and biofilm formation in the Sporothrix schenckii complex
Published in Biofouling, 2020
Raimunda Sâmia Nogueira Brilhante, Vandbergue Santos Pereira, Augusto Feynman Dias Nobre, Jonathas Sales de Oliveira, Mirele Rodrigues Fernandes, Anderson da Cunha Costa, Anderson Messias Rodrigues, Zoilo Pires de Camargo, Waldemiro Aquino Pereira-Neto, José Júlio Costa Sidrim, Marcos Fábio Gadelha Rocha
Tyrosol is another QSM that plays a role in stimulating germ tube, pseudohypha and biofilm formation in C. albicans (Sebaa et al. 2019) as well as showing antifungal activity against Candida spp. (Cordeiro et al. 2015), H. capsulatum and C. posadasii (Brilhante et al. 2016a). 2-Phenylethanol inhibits biofilm formation by Aspergillus fumigatus and Penicillium spp. (Liu et al. 2014; Wongsuk and Luplertlop 2020). Tryptophol regulates the germination of Aspergillus sp. and adhesion of Debaryomyces hansenii, and reduced the filament and virulence of Candida spp. in an in vivo model (Mehmood et al. 2019; Singkum et al. 2019). However, the effect of these QSMs on biofilm formation by Sporothrix spp. is not clearly understood.
Role of IgA in the early-life establishment of the gut microbiota and immunity: Implications for constructing a healthy start
Published in Gut Microbes, 2021
Jielong Guo, Chenglong Ren, Xue Han, Weidong Huang, Yilin You, Jicheng Zhan
Similar to gut virome, interactions among the bacterial microbiota, mycobiome, and gut immunity have been reported. Clusters IV and XIVa of Clostridia resist the colonization of Candida albicans via the hypoxia-inducible factor-1α-mediated generation of LL-37 in mice.42 The administration of anti-fungal agents exaggerated dextran sulfate sodium (DSS)-induced colitis and house dust mite-induced allergic airway disease, along with bacterial dysbiosis, including a decline in Bacteroides and Clostridium and an increase in Streptococcus.43 Unlike bacterial microbiota, fungal diversity changes moderately over time, with a slight increase in alpha-diversity while beta-diversity remains virtually unchanged.44 A transformation from Debaryomyces hansenii to Saccharomyces cerevisiae was evident in Saccharomycetales during the first year of life.44 Balanced mycobiota in adults mainly include Candida, Malassezia, and Saccharomyces.45
Biological detoxification of ochratoxin A in plants and plant products
Published in Toxin Reviews, 2019
Mahmoud Sheikh-Zeinoddin, Mohammadreza Khalesi
A few types of microorganisms may inhibit the OTA biosynthesis. A simple example of this approach is observed during the fermentation process, where the molds grown in the culture are eliminated in favor of yeasts, consequently, the OTA formation is inhibited (Amézqueta et al. 2009). Debaryomyces hansenii and Saccharomyces cerevisiae have been reported to prevent OTA production by Aspergilli sp. (Gil-Serna et al. 2011, Cubaiu et al. 2012).
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