Bioactive Compounds Produced by Antarctic Filamentous Fungi

Vaca, Inmaculada; Chávez, Renato

doi:10.1007/978-3-030-18367-7_12

Cited by 12 publications

(6 citation statements)

References 57 publications

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“…Previously unknown species are frequently encountered, often with potential biotechnological interest. For example, unusual biochemical pathways have been reported from Antarctic strains, allowing them to generate new antimicrobial, herbicidal, and antitumor compounds [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Growth Forms and Functional Guilds Distribution of Soil Fungi in Coastal Versus Inland Sites of Victoria Land, Antarctica

Canini

Buzzini

Turchetti

et al. 2021

Biology

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In Victoria Land, Antarctica, ice-free areas are restricted to coastal regions and dominate the landscape of the McMurdo Dry Valleys. These two environments are subjected to different pressures that determine the establishment of highly adapted fungal communities. Within the kingdom of fungi, filamentous, yeasts and meristematic/microcolonial growth forms on one side and different lifestyles on the other side may be considered adaptive strategies of particular interest in the frame of Antarctic constraints. In this optic, soil fungal communities from both coastal and Dry Valleys sites, already characterized thorough ITS1 metabarcoding sequencing, have been compared to determine the different distribution of phyla, growth forms, and lifestyles. Though we did not find significant differences in the richness between the two environments, the communities were highly differentiated and Dry Valleys sites had a higher evenness compared to coastal ones. Additionally, the distribution of different growth forms and lifestyles were well differentiated, and their diversity and composition were likely influenced by soil abiotic parameters, among which soil granulometry, pH, P, and C contents were the potential main determinants.

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Section: Introductionmentioning

confidence: 99%

Growth Forms and Functional Guilds Distribution of Soil Fungi in Coastal Versus Inland Sites of Victoria Land, Antarctica

Canini

Buzzini

Turchetti

et al. 2021

Biology

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“…In addition to enzymes, fungi are a rich reservoir of different classes of secondary metabolites, such as terpenoids, polyketides, alkaloids, polyacetylenes with demonstrated antiviral, antibacterial, antifungal, antitumoral, herbicidal and antiprotozoal activities. These molecules play a pivotal role in the inter-and intra-specific interactions within the soil microbial communities and provide them competitive advantages over other microorganisms [11,51]. A list of bioactive compounds retrieved from Antarctic soil fungi, grouped according to their biological activity is reported in Table 2.…”

Section: Other Bioactive Compoundsmentioning

confidence: 99%

Extracellular Enzymes and Bioactive Compounds from Antarctic Terrestrial Fungi for Bioprospecting

Zucconi

Canini

Temporiti

et al. 2020

IJERPH

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Antarctica, one of the harshest environments in the world, has been successfully colonized by extremophilic, psychrophilic, and psychrotolerant microorganisms, facing a range of extreme conditions. Fungi are the most diverse taxon in the Antarctic ecosystems, including soils. Genetic adaptation to this environment results in the synthesis of a range of metabolites, with different functional roles in relation to the biotic and abiotic environmental factors, some of which with new biological properties of potential biotechnological interest. An overview on the production of cold-adapted enzymes and other bioactive secondary metabolites from filamentous fungi and yeasts isolated from Antarctic soils is here provided and considerations on their ecological significance are reported. A great number of researches have been carried out to date, based on cultural approaches. More recently, metagenomics approaches are expected to increase our knowledge on metabolic potential of these organisms, leading to the characterization of unculturable taxa. The search on fungi in Antarctica deserves to be improved, since it may represent a useful strategy for finding new metabolic pathways and, consequently, new bioactive compounds.

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“…Microorganisms that live in extreme climate habitats are promising research directions because they show high viability and resistance to adverse abiotic factors [2]. At the same time, most of these studies have been carried out mainly on Antarctic bacterial strains, while almost no attention has been paid to the activity of micromycetes of Antarctic substrates [3,4].…”

Section: Introductionmentioning

confidence: 99%

Psychrotolerant Strains of Phoma herbarum with Herbicidal Activity

Trigubovich,

Mandryk-Litvinkovich,

Valakhanovich

et al. 2023

Agronomy

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The search for stress-tolerant producer strains is a key factor in the development of biological mycoherbicides. The aim of the study was to assess the herbicidal potential of phoma-like fungi. Morphological and physiological features of two Antarctic psychrotolerant strains 20-A7-1.M19 and 20-A7-1.M29 were studied. Multilocus sequence analysis was used to identify these strains. They happened to belong to Phoma herbarum Westend. The psychrotolerant properties of these strains were suggested not only by ecology, but also by their capability to grow in a wide temperature range from 5 °C to 35 °C, being resistant to high insolation, UV radiation, aridity, and other extreme conditions. It was shown that treatment with their cell-free cultural fugate, crude mycelium extract, and culture liquid significantly reduced the seed germination of troublesome weeds such as dandelion and goldenrod. Cell-free cultural fugate and culture liquid also led to the formation of chlorosis and necrotic spots on leaves. Thus, psychrotolerant strains P. herbarum 20-A7-1.M19 and 20-A7-1.M29 demonstrate high biotechnological potential. Our next step is to determine the structures of biologically active substances and to increase their biosynthesis, as well as the development of biological and biorational mycoherbicides. New mycoherbicides can reduce the chemical load on agroecosystems and increase the effectiveness of applied chemicals.

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Bioactive Compounds Produced by Antarctic Filamentous Fungi

Cited by 12 publications

References 57 publications

Growth Forms and Functional Guilds Distribution of Soil Fungi in Coastal Versus Inland Sites of Victoria Land, Antarctica

Growth Forms and Functional Guilds Distribution of Soil Fungi in Coastal Versus Inland Sites of Victoria Land, Antarctica

Extracellular Enzymes and Bioactive Compounds from Antarctic Terrestrial Fungi for Bioprospecting

Psychrotolerant Strains of Phoma herbarum with Herbicidal Activity

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