Ecosystem services provided by fungi in freshwaters: a wake-up call

Seena, Sahadevan; Baschien, Christiane; Barros, Juliana; Sridhar, Kandikere R.; Graça, Manuel A. S.; Mykrä, Heikki; Bundschuh, Mirco

doi:10.1007/s10750-022-05030-4

Cited by 11 publications

(8 citation statements)

References 119 publications

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“…Freshwater fungi provide essential ecosystem services in aquatic systems ( Seena et al 2023 ). Besides their key functional adaptations to leaf material degradation, they promise to be potent sources of compounds such as peptides, polyketides, terpenes, and alkaloids, although, very much of their biology and chemistry are still to be known ( Hernández-Carlos and Gamboa-Angulo 2011 ; Bills and Gloer 2017 ; El-Elimat et al 2021 ).…”

Section: Discussionmentioning

confidence: 99%

“…Ecological—and in particular enzymatic—studies showed that freshwater fungi perform differently because they are equipped with different sets of enzymes ( Suberkropp et al 1983 ). The microbiological composition and extracellular enzymatic activity are also affected by an increase in temperature in freshwater environments ( Fenoy et al 2022 ), which can also be promoted by climate change ( Seena et al 2023 ) and likely prejudiced ecosystem functioning ( Parain et al 2019 ). On the other hand, fungal communities were functionally richer in the colder subregions ( Fenoy et al 2022 ) and are capable of decomposing leaf litter at lower temperatures ( Taylor and Chauvet 2014 ; Pérez et al 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Comparative genome analysis of the freshwater fungus Filosporella fistucella indicates potential for plant-litter degradation at cold temperatures

Vasconcelos Rissi,

Ijaz,

Baschien

2023

G3: Genes, Genomes, Genetics

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Freshwater fungi play an important role in the decomposition of organic matter of leaf-litter in rivers and streams. They also possess the necessary mechanisms to endure lower temperatures caused by habitat and weather variations. This includes the production of cold-active enzymes and antifreeze proteins. To better understand the physiological activities of freshwater fungi in their natural environment, different methods are being applied, and genome sequencing is one in the spotlight. In our study, we sequenced the first genome of the freshwater fungus Filosporella fistucella (45.7 Mbp) and compared the genome with the evolutionary close-related species Tricladium varicosporioides (48.2 Mpb). The genomes were annotated using the carbohydrate-active enzymes database where we then filtered for leaf-litter degradation-related enzymes (cellulase, hemicellulase, laccase, pectinase, cutinase, amylase, xylanase, and xyloglucanase). Those enzymes were analyzed for antifreeze properties using a machine-learning approach. We discovered that Filosporella fistucella has more enzymes to participate in the breakdown of sugar, leaf, and wood than Tricladium varicosporioides (855 and 719, respectively). F. fistucella shows a larger set of enzymes capable to resist cold temperatures than T. varicosporioides (75 and 66 respectively). Our findings indicate that in comparison with T. varicosporioides, F. fistucella has a greater capacity for aquatic growth, adaptability to freshwater environments, and resistance to low temperatures.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative genome analysis of the freshwater fungus Filosporella fistucella indicates potential for plant-litter degradation at cold temperatures

Vasconcelos Rissi,

Ijaz,

Baschien

2023

G3: Genes, Genomes, Genetics

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“…Aquatic hyphomycetes are crucial components of freshwater food webs as they decompose plant material, thereby releasing nutrients that can be utilised by other organisms in the ecosystem. The role of these fungi in nutrient cycling and organic matter decomposition is critical for the functioning of freshwater ecosystems (Barros and Seena, 2022;Seena et al, 2022b). Aquatic hyphomycetes are sensitive to a variety of anthropogenic stressors that can negatively impact their growth and decomposition activities.…”

Section: Discussionmentioning

confidence: 99%

Does Functionalised Nanoplastics Modulate the Cellular and Physiological Responses of Aquatic Fungi to Metals?

Barros¹,

Kumar

Seena³

2023

Preprint

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“…Slides for microscopical observation were prepared during the incubation period and were observed using an Olympus CX 41 optical microscope. The fungal taxa were mainly identified based on their unique characteristic conidial morphology as they produce conidiophores and conidiogenous cells according to the relevant taxonomical keys [ 1 , 2 , 9 , 22 , 36 , 37 ]. Photographs were taken using an optical microscope coupled with a camera (Olympus SC30 U-TV1X-2, T2 Tokyo, Japan).…”

Section: Methodsmentioning

confidence: 99%

“…Various effluents are increasingly being considered not only for the more feasible use in irrigation but also to produce quality water for urban and drinking [ 8 ]. Ingoldian fungi are generally associated with clean and well-aerated freshwaters and are believed to be sensitive to pollution [ 9 ]. A decline in aquatic hyphomycetes diversity has been found in streams affected by organic pollution [ 10 ] or heavy metals [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Seasonal fluctuations and diversity of Ingoldian mycobiota in two water bodies receiving different effluents at Assiut Governorate (Upper Egypt)

et al. 2023

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In the current study, fifty-eight Ingoldain fungal species assignable to forty-one genera were recovered from two water bodies receiving the treated sewage and the effluents of oils and soaps factory at Assiut Governorate (Upper Egypt), of which Anguillospora, Amniculicola, Flagellospora, and Mycocentrospora were the most prevalent genera. The most widespread identified species were Anguillospora furtive, Amniculicola longissima and Flagellospora fusarioides. Forty-three species were identified for the first time in Egypt. The most Ingoldain taxa were estimated for El-Zinnar canal, with the highest recorded taxa in winter. Whereas, the highest dominance of Ingoldian fungi was estimated for the El-Ibrahimia canal. The highest Simpson and Shannon diversity indexes were estimated for El-Zinnar canal samples recording 0.9683 and 3.741, respectively. The poorest water sites with Ingoldian fungi were those exposed directly to either treated sewage or industrial effluents, with which relatively higher values of water conductivity, cations and anions. Water temperature was the main abiotic factor driving the seasonal occurrence of Ingoldian fungi. It is interesting to isolate some Ingoldian fungal species from the stressful water sites receiving the effluents which provide valuable insights regarding their adaptation, predictive and putative role as bioindicators and their potentiality in pollutants degradation, organic decomposition, and transformation of xenobiotic compounds.

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Ecosystem services provided by fungi in freshwaters: a wake-up call

Cited by 11 publications

References 119 publications

Comparative genome analysis of the freshwater fungus Filosporella fistucella indicates potential for plant-litter degradation at cold temperatures

Comparative genome analysis of the freshwater fungus Filosporella fistucella indicates potential for plant-litter degradation at cold temperatures

Does Functionalised Nanoplastics Modulate the Cellular and Physiological Responses of Aquatic Fungi to Metals?

Seasonal fluctuations and diversity of Ingoldian mycobiota in two water bodies receiving different effluents at Assiut Governorate (Upper Egypt)

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