Fungi isolated from Antarctic mosses

Tosi, Solveig; Casado, Begoña; Gerdol, Renato; Caretta, G.

doi:10.1007/s00300-001-0337-8

Cited by 151 publications

(54 citation statements)

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“…Zand. in Antarctica (Tosi et al, 2002). However, this is the first description of D. tassiana as an endophyte of C. quitensis leaves.…”

Section: Discussionmentioning

confidence: 71%

“…Fungal studies conducted in Antarctica have mainly included species living in the soil or in historic wood brought into Antarctica (Arenz et al, 2006;Fell et al, 2006;Ruisi et al, 2007). As for plants occurring in Antarctica, some fungal species have been obtained from mosses (Bradner et al, 2000;Tosi et al, 2002) and others have been associated with the roots of the two native Antarctic vascular plant species Deschampsia antarctica Desv. (Poaceae) and Colobanthus quitensis (Kunth) Bartl.…”

Section: Introductionmentioning

confidence: 99%

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Endophytic fungi community associated with the dicotyledonous plant Colobanthus quitensis (Kunth) Bartl. (Caryophyllaceae) in Antarctica

Rosa¹,

Vieira²,

Santiago³

et al. 2010

FEMS Microbiology Ecology

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This work describes the distribution and diversity of fungal endophytes associated with leaves of Colobanthus quitensis, a dicotyledonous plant that lives in Antarctica. A total of 188 fungal isolates were obtained from six different sites located across a 25.5-km transect through Admiralty Bay, at King George Island. The ITS1-5.8S-ITS2 nuclear ribosomal gene was sequenced and the endophytic fungi were identified as species belonging to the genera Aspergillus, Cadophora, Davidiella, Entrophospora, Fusarium, Geomyces, Gyoerffyella, Microdochium, Mycocentrospora, and Phaeosphaeria. Davidiella tassiana was the prevalent species with 20.2% abundance. The endophytic fungal community showed low richness and high dominance indexes. Eleven endophytic taxa (58%) were fungi able to produce melanin in their hyphae, which may confer resistance against freezing temperatures and high rates of UV radiation and may increase their fitness in the extreme conditions of the Antarctic environment. In addition, phytopathogenic and decomposer species associated with healthy leaves of C. quitensis were found. The results obtained in this work show that C. quitensis is an interesting reservoir of saprobic and pathogenic fungal species, and could be a community model for further ecological and evolutionary studies, as well as studies of the adaptation mechanisms these microorganisms have to the extreme conditions in Antarctica.

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“…Zand. in Antarctica (Tosi et al, 2002). However, this is the first description of D. tassiana as an endophyte of C. quitensis leaves.…”

Section: Discussionmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Endophytic fungi community associated with the dicotyledonous plant Colobanthus quitensis (Kunth) Bartl. (Caryophyllaceae) in Antarctica

Rosa¹,

Vieira²,

Santiago³

et al. 2010

FEMS Microbiology Ecology

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“…Geomyces pannorum is a keratinophilic and psychrophilic fungus that has a ubiquitous distribution in the soils of Arctic, Alpine, temperate and Antarctic regions (Mercantini et al, 1989). In Antarctica, G. pannorum was isolated from thalli of seaweeds Adenocystis utricularis and Desmarestia anceps (Loque et al, 2010), as an endophyte of Colobanthus quitensis , and is associated with mosses (Tosi et al, 2002). According to Vishniac (1996) and Arenz et al (2011), this fungus occurs in many places of Antarctica.…”

Section: Discussionmentioning

confidence: 99%

“…According to Kirk et al (2001), the Mortierella genus (subphylum Mortierellomycotina) occurs mainly in the soil of different ecosystems, including terrestrial habitats of Antarctica (Adams et al, 2006). In Antarctica, Mortierella species have been detected in soil (Bridge & Newsham, 2009) and associated with mosses (Tosi et al, 2002). The significance of fungi in Antarctic lakes is not fully clear, because data on the numbers of species in natural habitats are limited.…”

Section: Discussionmentioning

confidence: 99%

Diversity and distribution of fungal communities in lakes of Antarctica

Gonçalves

Vaz

Rosa

et al. 2012

FEMS Microbiol Ecol

117

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This study assessed the diversity and distribution of filamentous fungi obtained from water sampled from six lakes in the Antarctic Peninsula. One hundred and twenty-eight fungal isolates were purified and identified by analysis of nuclear rDNA ITS region sequences as belonging to 31 fungal different operational taxonomic units (OTUs). The most frequently isolated fungi were Geomyces pannorum and Mortierella sp.; these species occurred in six and three of the lakes sampled, respectively, and displayed the highest total colony-forming unit per L. Different species that have not been found to these lakes and/or had adapted to cold conditions were found. In general, the fungal community displayed low richness and high dominance indices. The species Cadophora cf. luteo-olivacea, Cadophora malorum, Davidiella tassiana, G. pannorum, Mortierella cf. alpina and Thelebolus cf. microsporus that were found in the lakes in question were also previously found in other cold ecosystems, such as Arctic, temperate and Alpine regions. The results of this study suggest the presence of an interesting aquatic fungal web, including symbionts, weak and strong saprophytes and parasite/pathogen fungal species. This aquatic web fungal may be a useful community model for further ecological and evolutionary studies of extreme habitats.

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“…These last 12 strains corresponding to a single fungal species (identical 18S, ITS and 28S rRNA sequences) were isolated from two different hydrothermal sites: Menez-Gwen (6) and Rainbow (6) and thus support the ecological significance of this species in the deep-sea vents. Cadophora malorum has been reported largely in Antarctica on mosses (Azmi and Seppelt, 1998;Tosi et al, 2002), which demonstrated their wide distribution on the Antarctic continent. A recent study has physiologically demonstrated that Cadophora sp.…”

Section: Diversity and Potential Role In Deep-sea Ecosystemsmentioning

confidence: 99%

Diversity of culturable marine filamentous fungi from deep‐sea hydrothermal vents

Burgaud

Calvez

Arzur

et al. 2009

Environmental Microbiology

148

116

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As now very few studies have been carried out on deep-sea marine fungi, this field remains relatively unknown. However, their presence inside benthic microbial eukaryotes at deep-sea vents was recently pointed out from molecular microbial ecology studies. We report here an attempt to describe the culturable part of mycological communities in deep-sea vent ecosystems that is an important step in understanding their diversity, abundance and function. Physiological characterization revealed strains that are more or less adapted to deep-sea conditions. Those results suggest the presence of true marine organisms and other more ubiquitous. Phylogenetical characterization highly correlated to physiological data revealed the presence of fungi that have been previously described and unknown ones until now, belonging to new taxonomic groups. This survey encourages for further work in order to complete descriptions and also to describe the ecological role of these organisms in such extreme environments.

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Fungi isolated from Antarctic mosses

Cited by 151 publications

References 0 publications

Endophytic fungi community associated with the dicotyledonous plant Colobanthus quitensis (Kunth) Bartl. (Caryophyllaceae) in Antarctica

Endophytic fungi community associated with the dicotyledonous plant Colobanthus quitensis (Kunth) Bartl. (Caryophyllaceae) in Antarctica

Diversity and distribution of fungal communities in lakes of Antarctica

Diversity of culturable marine filamentous fungi from deep‐sea hydrothermal vents

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