Influence on mycotal species diversity by different stem parts of submerged aquatic plants that inhibit the growth of aquatic organisms

Czeczuga, B.; Godlewska, Anna; Czeczuga-Semeniuk, Ewa; Semeniuk, A.; Muszyska, Elbieta

doi:10.1127/nova_hedwigia/2015/0230

Cited by 3 publications

(3 citation statements)

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“…For genotype group D, L. caudata and Phoma -like isolates showed a similar pattern to the positive control, but overall sequence difference between the isolates. While Leptolegnia caudata is a widely distributed aquatic phytosaprobiont oomycete (Czeczuga et al ., 2015), the Phoma genus (Ascomycota) includes a wide group of ubiquitous phytopathogenetic organisms, which colonize soil, organic matter, plants and water sources (Bennett et al ., 2018). Due to their ubiquitous presence in water and their ability to opportunistically parasitize aquatic animals and colonize dead animals as necrotrophs (Czeczuga et al ., 2004; Bennett et al ., 2018), cross-reactions of the assays developed in this study with these species and other untested oomycetes or fungi cannot be excluded.…”

Section: Discussionmentioning

confidence: 99%

Improved method for genotyping the causative agent of crayfish plague (Aphanomyces astaci) based on mitochondrial DNA

et al. 2019

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Aphanomyces astaci causes crayfish plague, which is a devastating disease of European freshwater crayfish. The likely first introduction of A. astaci into Europe was in the mid-19th century in Italy, presumably with the introduction of North American crayfish. These crayfish can carry A. astaci in their cuticle as a benign infection. Aphanomyces astaci rapidly spread across Europe causing the decline of the highly susceptible indigenous crayfish species. Random amplified polymorphic DNA-PCR analysis of A. astaci pure cultures characterized five genotype groups (A, B, C, D and E). Current A. astaci genotyping techniques (microsatellites and genotype-specific regions, both targeting nuclear DNA) can be applied directly to DNA extracted from infected cuticles but require high infection levels. Therefore, they are not suitable for genotyping benign infections in North American crayfish (carriers). In the present study, we combine bioinformatics and molecular biology techniques to develop A. astaci genotyping molecular markers that target the mitochondrial DNA, increasing the sensitivity of the genotyping tools. The assays were validated on DNA extracts of A. astaci pure cultures, crayfish tissue extractions from crayfish plague outbreaks and tissue extractions from North American carriers. We demonstrate the presence of A. astaci genotype groups A and B in UK waters.

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Section: Discussionmentioning

confidence: 99%

Improved method for genotyping the causative agent of crayfish plague (Aphanomyces astaci) based on mitochondrial DNA

et al. 2019

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“…They are able to secrete hydrolytic enzymes that mineralize vegetative organic matter [45][46][47]. This group includes Achlya klebsiana, Ac.…”

Section: Discussionmentioning

confidence: 99%

Aquatic Fungi and Straminipilous Organisms in the Lakes of the Ełckie District

Godlewska¹,

Kiziewicz²,

Muszyńska³

et al. 2016

Pol. J. Environ. Stud.

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We analyzed the species composition of fungi and straminipilous organisms in relation to hydrochemical conditions in six lakes within the Ełckie Lake District. The mycological investigations conducted in two vegetative seasons (2014-15) identified 44 species (eight aquatic fungi and 36 straminipilous organisms). The largest number of fungus species were found in lakes Łaśmiady (23), Szarek (22), and Krzywe (20), and the fewest were detected in Ełckie (12), Rajgrodzkie (13), and Dręstwo (14). The diversity of the quantitative and qualitative composition of the mycobiota was probably associated with the content of biogenic compounds and organic substances in the water. The elevated levels of these parameters (lakes: Łaśmiady, Szarek, and Krzywe) stimulated the growth and development of fungi and straminipilous organisms, whereas very high levels of biogenic compounds and organic matter (Lake Ełckie) and their very low content (Lake Dręstwo) had an inhibitory effect.Among the isolated taxa, there were parasites of amphibians and their spawn, and fish and eggs, including Achlya americana, Ac. polyandra, Saprolegnia parasitica, and S. ferax. Some species included pathogens of crayfish and other aquatic crustaceans such as Myzocytium microsporum, M. zoophthorum, Aphanomyces astaci, and Ap. daphniae. Some fungi appeared to be potentially pathogenic to humans, like Aspergillus niger and Candida tropicalis. Such species as Achlya klebsiana, Ac. prolifera, Leptolegnia caudata, Nowakowskiella elegans, N. macrospora, Pythium inflatum, and Saprolegnia litoralis were common phytosaprobionts.Statistical analysis of the results was conducted to determine a correlation in the number of the species of fungi and straminipilous organisms with such hydrochemical parameters as the levels of oxygen, carbon dioxide, and biochemical oxygen demand within a five-day period (BOD 5 ) , chemical oxygen demand (COD), calcium carbohydrate, nitrate nitrogen, phosphates, chlorides, dry mass, dissolved substances, and suspension. The differences noted in the species composition of the mycobiota in the lakes studied resulted from, among other things, the physicochemical properties of water. Such parameters as the contents of oxygen, nitrate nitrogen, phosphates, dry residue, dissolved substances, and suspension showed a positive

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“…It is so called extracellular production (Fogg, 1966). This production may rich up to 50% of photosynthate in freeliving cells of Chlorella vulgaris and changes according to the age of the cells and light conditions (Czeczuga et al, 2015). The chemical composition of extracellular production has been known.…”

Section: Specification Mean Value Range Lightmentioning

confidence: 99%

Stimulatory activity of four green freshwater sponges on aquatic mycotal communities

Czeczuga¹,

Semeniuk²,

Grell³

et al. 2015

Afr. J. Biotechnol.

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The influence of the four species of green sponges (Ephydatia muelleri, Heteromeyenia stepanowii, Spongilla fluviatilis, and Spongilla lacustris) on the occurrence of aquatic mycotal species in the water of three four water bodies of different trophy was investigated in this study. Seeds and snake exuviae were used as baits. For the measurement of the primary and extracellular production by symbiotic algae of green sponges and assimilation of those products by mycota, radioactive carbon (14 C) was used. A total of 75 mycotal species were found to be growing on the baits. The fewest mycota were noted in the containers in water from oligotrophic Lake Hańcza; the most in the containers with eutrophic water from River Supraśl. More mycota were found to grow in the containers with green sponges (Sp) than in the controls (Co) in water from all water bodies. The mean ratio of Sp/Co in green sponges ranged from 2.30 (E. muelleri) to 4.80 (H. stepanowii); in brown colonies (without symbiotic algae) it was 0.90. Mean value of 14 C fixation (primary production) in symbiotic algae of Spogilla fluviatilis was 5.67 mg C g-1 dry weight sponge per hour. The effect of green sponges on the abundance of aquatic mycotal species is caused by dissolved organic matter produced during photosynthesis by symbiotic zoochlorellae, a symbionts of green sponges and excreted into the water environment (S. fluviatilis excreted mean 12.8% of carbon fixation). Those excreted organic substances serve as nutrients for aquatic mycota. The mean value of extracellular products assimilated by mycota was 4.96 mg C g-1 dry weight mycelium per hour.

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Influence on mycotal species diversity by different stem parts of submerged aquatic plants that inhibit the growth of aquatic organisms

Cited by 3 publications

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Improved method for genotyping the causative agent of crayfish plague (Aphanomyces astaci) based on mitochondrial DNA

Improved method for genotyping the causative agent of crayfish plague (Aphanomyces astaci) based on mitochondrial DNA

Aquatic Fungi and Straminipilous Organisms in the Lakes of the Ełckie District

Stimulatory activity of four green freshwater sponges on aquatic mycotal communities

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