Diversity and physiology of marine lignicolous fungi in Arctic waters: a preliminary account

Pang, Ka−Lai; Chow, Raymond K.K.; Chan, Chi-Wong; Vrijmoed, L. L. P.

doi:10.3402/polar.v30i0.5859

Cited by 30 publications

(16 citation statements)

References 20 publications

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“…The wood-inhabiting marine fungi in Tromsø (mainland Norway) were found to be similar to those reported in this paper but those that occurred in Longyearbyen (Svalbard, an Arctic archipelago) were very diverse with many new species (Pang et al 2011). The dominant orders of marine fungi in Sweden included the Pleosporales, Microascales (all in the Halosphaeriaceae), Lulworthiales and Helotiales.…”

Section: Discussionsupporting

confidence: 79%

A conspectus of the filamentous marine fungi of Sweden

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Pang

et al. 2019

Botanica Marina

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Marine filamentous fungi have been little studied in Sweden, which is remarkable given the depth and width of mycological studies in the country since the time of Elias Fries. Seventy-four marine fungi are listed for Sweden based on historical records and recent collections, of which 16 are new records for the country. New records for the country are based on morphological identification of species mainly from marine wood, and most of them from the Swedish West Coast. In some instances, the identifications have been made by comparisons of sequences obtained from cultures with reference sequences in GenBank. Corollospora angusta, Corollospora filiformis, and Corollospora pulchella, previously known from tropical/subtropical areas, are recorded for the first time for Sweden. The arctic Havispora longyearbyensis was also found. Kalmusia longispora and Neocamarosporium calvescens were reported for the first time from marine habitats.

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Section: Discussionsupporting

confidence: 79%

A conspectus of the filamentous marine fungi of Sweden

Tibell

Pang

et al. 2019

Botanica Marina

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“…Cellulose breakdown is likely of bacterial origin as illustrated by the presence of cellulose degrading Clostridiales (Ljungdahl and Eriksson, 1985;Shiratori et al, 2006), but fungi, the major wood degrader in terrestrial environment (Ljungdahl and Eriksson, 1985;Raghukumar, 2008), could also participate in the process. We were able to directly detect fungi and to assign them to fungal groups without using long incubations (Azevedo et al, 2010;Pang et al, 2011) or culture methods (Rämä et al, 2014). Whether these were able to degrade cellulose remains to be shown, as none of our ITS sequences had perfect match to cultivated strains.…”

Section: Discussionmentioning

confidence: 93%

Temporal and spatial constraints on community assembly during microbial colonization of wood in seawater

et al. 2015

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Wood falls on the ocean floor form chemosynthetic ecosystems that remain poorly studied compared with features such as hydrothermal vents or whale falls. In particular, the microbes forming the base of this unique ecosystem are not well characterized and the ecology of communities is not known. Here we use wood as a model to study microorganisms that establish and maintain a chemosynthetic ecosystem. We conducted both aquaria and in situ deep-sea experiments to test how different environmental constraints structure the assembly of bacterial, archaeal and fungal communities. We also measured changes in wood lipid concentrations and monitored sulfide production as a way to detect potential microbial activity. We show that wood falls are dynamic ecosystems with high spatial and temporal community turnover, and that the patterns of microbial colonization change depending on the scale of observation. The most illustrative example was the difference observed between pine and oak wood community dynamics. In pine, communities changed spatially, with strong differences in community composition between wood microhabitats, whereas in oak, communities changed more significantly with time of incubation. Changes in community assembly were reflected by changes in phylogenetic diversity that could be interpreted as shifts between assemblies ruled by species sorting to assemblies structured by competitive exclusion. These ecological interactions followed the dynamics of the potential microbial metabolisms accompanying wood degradation in the sea. Our work showed that wood is a good model for creating and manipulating chemosynthetic ecosystems in the laboratory, and attracting not only typical chemosynthetic microbes but also emblematic macrofaunal species.

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“…Although some reports related to enzyme production by marine-derived fungi appeared in the 1980s, studies on this subject started to be published more frequently after 1999–2000 ( Velmurugan and Lee, 2012 ). Salinity, high pressure, low temperature, oligotrophic conditions, pH extremes, widely ranging mineral content in seawater, and special lighting conditions contribute to the differences between the enzymes generated by marine microorganisms and homologous enzymes from terrestrial microorganisms ( Booth and Kenkel, 1986 ; Jones, 2000 ; Gomes et al, 2008 ; Madhu et al, 2009 ; Pang et al, 2011 ; Intriago, 2012 ; Passarini et al, 2013 ; Rämä et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Marine-derived fungi: diversity of enzymes and biotechnological applications

et al. 2015

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The ocean is considered to be a great reservoir of biodiversity. Microbial communities in marine environments are ecologically relevant as intermediaries of energy, and play an important role in nutrient regeneration cycles as decomposers of dead and decaying organic matter. In this sense, marine-derived fungi can be considered as a source of enzymes of industrial and/or environmental interest. Fungal strains isolated from different substrates, such as invertebrates, decaying wood, seawater, sediments, and mangrove detritus, have been reported to be producers of hydrolytic and/or oxidative enzymes, with alginate lyase, amylase, cellulase, chitinase, glucosidase, inulinase, keratinase, ligninase, lipase, nuclease, phytase, protease, and xylanase being among the enzymes produced by fungi of marine origin. These enzymes present temperature and pH optima ranging from 35 to 70∘C, and 3.0 to 11.0, respectively. High-level production in bioreactors is mainly performed using submerged-state fermentation. Certain marine-derived fungal strains present enzymes with alkaline and cold-activity characteristics, and salinity is considered an important condition in screening and production processes. The adaptability of marine-derived fungi to oceanic conditions can be considered an attractive point in the field of fungal marine biotechnology. In this review, we focus on the advances in discovering enzymes from marine-derived fungi and their biotechnological relevance.

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Diversity and physiology of marine lignicolous fungi in Arctic waters: a preliminary account

Cited by 30 publications

References 20 publications

A conspectus of the filamentous marine fungi of Sweden

A conspectus of the filamentous marine fungi of Sweden

Temporal and spatial constraints on community assembly during microbial colonization of wood in seawater

Marine-derived fungi: diversity of enzymes and biotechnological applications

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