A psychrophilic and halotolerant strain of Thelebolus microsporus from Pangong Lake, Himalaya

Anupama, PD

doi:10.5943/mycosphere/2/5/10

Cited by 13 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most species in these studies, however, are psychrotolerant, and only a few were documented as psychrophiles such as Thelebolus microsporus , Mucor strictus , Phoma herbarum , Humicola marvinii , Pseudogymnoascus destructans , and some snow molds (e.g. Sclerotinia borealis , Microdochium nivale , Coprinus psychromorbidus ) ( Schipper 1967 , Dejardin & Ward 1971 , Traquair & Smith 1982 , Richard et al 1997 , Hsiang et al 1999 , Tronsmo et al 2001 , Singh et al 2006 , Gargas et al 2009 , Hoshino et al 2010 , Anupama et al 2011 , Minnis & Lindner 2013 ). Species in several yeast genera including Mrakia , Mrakiella and Rhodotorula were usually described as psychrophilic.…”

Section: Introductionmentioning

confidence: 99%

Psychrophilic fungi from the world's roof

Wang

Jiang²,

Wu³

et al. 2015

Pers - Int Mycol J

View full text Add to dashboard Cite

During a survey of cold-adapted fungi in alpine glaciers on the Qinghai-Tibet Plateau, 1 428 fungal isolates were obtained of which 150 species were preliminary identified. Phoma sclerotioides and Pseudogymnoascus pannorum were the most dominant species. Psychrotolerant species in Helotiales (Leotiomycetes, Ascomycota) were studied in more detail as they represented the most commonly encountered group during this investigation. Two phylogenetic trees were constructed based on the partial large subunit nrDNA (LSU) to infer the taxonomic placements of these strains. Our strains nested in two well-supported major clades, which represented Tetracladium and a previously unknown lineage. The unknown lineage is distant to any other currently known genera in Helotiales. Psychrophila gen. nov. was therefore established to accommodate these strains which are characterised by globose or subglobose conidia formed from phialides on short or reduced conidiophores. Our analysis also showed that an LSU-based phylogeny is insufficient in differentiating strains at species level. Additional analyses using combined sequences of ITS+TEF1+TUB regions were employed to further investigate the phylogenetic relationships of these strains. Together with the recognisable morphological distinctions, six new species (i.e. P. antarctica, P. lutea, P. olivacea, T. ellipsoideum, T. globosum and T. psychrophilum) were described. Our preliminary investigation indicates a high diversity of cold-adapted species in nature, and many of them may represent unknown species.

show abstract

Section: Introductionmentioning

confidence: 99%

Psychrophilic fungi from the world's roof

Wang

Jiang²,

Wu³

et al. 2015

Pers - Int Mycol J

View full text Add to dashboard Cite

show abstract

“…Various fungi representing different genera and species e.g. Thelebolus microspores, Lemonniera, Tetracladium, have been isolated from different regions of Himalaya, India (Sati et al, 2014;Anupama et al, 2011).The fungi in cold environments are facing numerous extreme limiting factors, including frequent freeze-thaw cycles, high salt concentration, low moisture content, extreme UV radiation and low nutrient availability (Robinson, 2001, McKenzie et al, 2003. To face such harsh conditions, fungi adapt themselves through various physiological and ecological mechanisms (Anupama et al, 2011).…”

mentioning

confidence: 99%

“…Thelebolus microspores, Lemonniera, Tetracladium, have been isolated from different regions of Himalaya, India (Sati et al, 2014;Anupama et al, 2011).…”

mentioning

confidence: 99%

Potential of Psychrotrophic Fungi Isolated From Siachen Glacier, Pakistan, to Produce Antimicrobial Metabolites

Hassan¹

2017

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract. This is the first study of recovery and characterization of fungi from ice, sediments and water samples collected from Siachen glacier, Himalaya Range, Pakistan. The isolation and Total Viable count (CFU/ml or g) was carried out by spread plate technique at 4°C and 15°C. Seventeen fungal isolates were obtained and identified by analysis of 18S rRNA ITS region. Most frequently isolated fungal isolates were Leotiomycetes sp., followed by Thelebolus, Penicillium, Cladosporium, Trichoderma, Periconia, Geomyces, Cryptococcus and Pueraria. All isolates were found halophilic and they were able to tolerate NaCl concentration up to 10-20%. Some isolates showed viability at 45°C and most of the isolates were able to grow at pH 1-13. All isolates were screened for their antimicrobial activity against clinically isolated bacterial and fungal strains but they showed good antimicrobial activity against Gram (+) bacteria. None of the fungal isolates inhibited Gram negative clinically isolated Escherichia coli and Klebsiella pneumonia but few were able to inhibit Gram positive bacterial and fungal strains. Fungal isolates were also screened for production of extracellular enzymes (amylase, cellulase, deoxyribonuclease, lipase, phosphatase and protease). Various isolates were good producers of cellulase, lipase and protease whereas only 2 out of 17 produced DNase and 4 produced phosphatase. Keywords: non-polar glacier, psychrophilic fungi, enzymes, halophilic IntroductionPsychrophilic fungi grow optimally at 15°C or lower but can also grow at temperature around 20°C or below, while psychrotrophic fungi grow well at temperature above 20°C (Maheswari, 2005;Robinson, 2001). Such type of fungi have been found and investigated in all major cold habitats, such as Antarctica (Blanchette et al., 2010), Arctic regions (Sonjak et al., 2006) and cold deep sea environments (Damare et al., 2006). Various fungi representing different genera and species e.g. Thelebolus microspores, Lemonniera, Tetracladium, have been isolated from different regions of Himalaya, India (Sati et al., 2014;Anupama et al., 2011).The fungi in cold environments are facing numerous extreme limiting factors, including frequent freeze-thaw cycles, high salt concentration, low moisture content, extreme UV radiation and low nutrient availability (Robinson, 2001, McKenzie et al., 2003. To face such harsh conditions, fungi adapt themselves through various physiological and ecological mechanisms (Anupama et al., 2011). Although, several cold adaptive mechanisms of psychrophilic fungi have been described but it is assumed that a mixture of such mechanisms are employed by psychrophiles including production (Robinson, 2001;Ruisi et al., 2007). Psychrophilic and psychrotrophic fungi are capable of providing a large number of biotechnological and pharmaceutical applications. Psychrophilic fungi are capable of synthesizing secondary metabolites that are very unique to cold ecosystems (Rosa et al., 2008). Psychrophilic fungi are producers of cold shock and cold-acclimati...

show abstract

“…According to their geographic distribution, Thelebolus genus is known for its cryophilic nature and for its association with dung and guano 72 . Some species such as T. globosus and T. ellipsoideus are endemic to Antarctica, while others such as T. microsporus have a wider habitat, including Antarctica 16,[72][73][74] . The genus Antarctomyces includes only two species, both native to the Antarctic continent 16,61,75 .…”

Section: Discussionmentioning

confidence: 99%

Antarctic fungi with antibiotic potential isolated from Fort William Point, Antarctica

Ordóñez-Enireb

Cucalón

Cárdenas

et al. 2022

Sci Rep

View full text Add to dashboard Cite

The Antarctic continent is one of the most inhospitable places on earth, where living creatures, mostly represented by microorganisms, have specific physiological characteristics that allow them to adapt to the extreme environmental conditions. These physiological adaptations can result in the production of unique secondary metabolites with potential biotechnological applications. The current study presents a genetic and antibacterial characterization of four Antarctic fungi isolated from soil samples collected in Pedro Vicente Maldonado Scientific Station, at Fort William Point, Greenwich Island, Antarctica. Based on the sequences of the internal transcribed spacer (ITS) region, the fungi were identified as Antarctomyces sp., Thelebolus sp., Penicillium sp., and Cryptococcus gilvescens. The antibacterial activity was assessed against four clinical bacterial strains: Escherichia coli, Klebsiella pneumoniae, Enterococcus faecalis, and Staphylococcus aureus, by a modified bacterial growth inhibition assay on agar plates. Results showed that C. gilvescens and Penicillium sp. have potential antibiotic activity against all bacterial strains. Interestingly, Thelebolus sp. showed potential antibiotic activity only against E. coli. In contrast, Antarctomyces sp. did not show antibiotic activity against any of the bacteria tested under our experimental conditions. This study highlights the importance of conservation of Antarctica as a source of metabolites with important biomedical applications.

show abstract

A psychrophilic and halotolerant strain of Thelebolus microsporus from Pangong Lake, Himalaya

Cited by 13 publications

References 24 publications

Psychrophilic fungi from the world's roof

Psychrophilic fungi from the world's roof

Potential of Psychrotrophic Fungi Isolated From Siachen Glacier, Pakistan, to Produce Antimicrobial Metabolites

Antarctic fungi with antibiotic potential isolated from Fort William Point, Antarctica

Contact Info

Product

Resources

About