Geography and environmental pressure are predictive of class‐specific radioresistance in black fungi

Aureli, Lorenzo; Coleine, Claudia; Delgado‐Baquerizo, Manuel; Ahren, Dag; Cemmi, Alessia; Di Sarcina, Ilaria; Onofri, Silvano; Selbmann, Laura

doi:10.1111/1462-2920.16510

Cited by 2 publications

(1 citation statement)

References 70 publications

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“…Other molecular studies have similarly revealed the presence of this genus in soils (Canini et al, 2021;Czechowski et al, 2016), suggesting that it could be among a small number of resilient taxa that are frequently found in rocks but which also survive in soils. Cryomyces antarcticus, which shows remarkable resistance to salinity, desiccation, toxic compounds, and ionising radiation (Aureli et al, 2020(Aureli et al, , 2023Onofri et al, 2007;Pacelli et al, 2017bPacelli et al, , 2018, survives extraterrestrial exposure in low Earth orbit (Onofri et al, 2019), and Cryomyces and other black yeasts are thus considered to be model organisms for studies investigating the lifeforms that might be able to colonise planets with characteristics similar to hyper-arid Antarctic deserts, such as Mars (Selbmann et al, 2015b, Zucconi, et al, 2015Simões et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

Wide divergence of fungal communities inhabiting rocks and soils in a hyper‐arid Antarctic desert

Canini,

Borruso,

Newsham

et al. 2023

Environmental Microbiology

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Highly simplified microbial communities colonise rocks and soils of continental Antarctica ice‐free deserts. These two habitats impose different selection pressures on organisms, yet the possible filtering effects on the diversity and composition of microbial communities have not hitherto been fully characterised. We hence compared fungal communities in rocks and soils in three localities of inner Victoria Land. We found low fungal diversity in both substrates, with a mean species richness of 28 across all samples, and significantly lower diversity in rocks than in soils. Rock and soil communities were strongly differentiated, with a multinomial species classification method identifying just three out of 328 taxa as generalists with no affinity for either substrate. Rocks were characterised by a higher abundance of lichen‐forming fungi (typically Buellia, Carbonea, Pleopsidium, Lecanora, and Lecidea), possibly owing to the more protected environment and the porosity of rocks permitting photosynthetic activity. In contrast, soils were dominated by obligate yeasts (typically Naganishia and Meyerozyma), the abundances of which were correlated with edaphic factors, and the black yeast Cryomyces. Our study suggests that strong differences in selection pressures may account for the wide divergences of fungal communities in rocks and soils of inner Victoria Land.

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Section: Discussionmentioning

confidence: 99%

Wide divergence of fungal communities inhabiting rocks and soils in a hyper‐arid Antarctic desert

Canini,

Borruso,

Newsham

et al. 2023

Environmental Microbiology

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Investigation the nutritional properties of Auricularia auricula pulp fermented with Lactobacillus strains and their effects on gut microbiota

Li,

Tan,

Lei

et al. 2023

J Sci Food Agric

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BACKGROUNDAuricularia auricula is rich in bioactive components, and microbial fermentation can further dramatically increase its content and bioavailability. However, there are few studies on the relationship between fermented A. auricula pulp (FAAP) and gut microbiota. In this study, standard strains Lactobacillus plantarum 21801 and 21805 purchased from the China Center of Industrial Culture Collection were used to ferment A. auricula pulp at a ratio of 2:1, with an inoculum of 5%, a fermentation temperature of 31 °C, and a fermentation time of 22 h. The nutritional properties, aroma, and color of FAAP and their effects on the body characteristics of mice and the structure and abundance of gut microbiota are discussed.RESULTSThe results showed that, compared with A. auricula pulp, FAAP significantly increased the nutritional properties while maintaining favorable sensory quality and flavor profiles. Among them, the content of total polyphenols and total flavonoids reached 22.04 μg mL−1 and 20.56 μg mL−1 respectively, and the 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid free‐radical scavenging rate increased to 73.21%. The consumption of FAAP had no negative effects on weight or liver and kidney function in mice and dramatically enhanced the antioxidant capacity in the liver and serum. The production of short‐chain fatty acids in the gut was promoted, the relative abundance of beneficial bacteria (Lactobacillus, Bifidobacterium, norank_f__Muribaculaceae and unclassified_f__Lachnospiraceae) increased, and the growth of some pathogenic bacteria (Helicobacter, Mucispirillum, and Alloprevotella) was inhibited.CONCLUSIONThese findings demonstrate that FAAP is rich in nutrients and has unique functional properties that promote host health and regulate the gut microbiota. © 2023 Society of Chemical Industry.

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Geography and environmental pressure are predictive of class‐specific radioresistance in black fungi

Cited by 2 publications

References 70 publications

Wide divergence of fungal communities inhabiting rocks and soils in a hyper‐arid Antarctic desert

Wide divergence of fungal communities inhabiting rocks and soils in a hyper‐arid Antarctic desert

Investigation the nutritional properties of Auricularia auricula pulp fermented with Lactobacillus strains and their effects on gut microbiota

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