Phylogenetic relationships among<i>Rhizophydium</i>isolates from North America and Australia

Letcher, Peter M.; Powell, Martha J.; Chambers, James G.; Holznagel, Wallace E.

doi:10.1080/15572536.2005.11832883

Cited by 25 publications

(6 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Molecular biology techniques have allowed a thorough reconstruction of parasite phylogenies (Letcher et al 2004, James et al 2006 and are increasingly providing more specific tools, primarily oligonucleotide probes, for the ecological study of aquatic parasites (López-García et al 2001, Mangot et al 2009). Fluorescent in situ hybridisation (FISH) is a reliable approach to detect and identify specific parasitic infections, especially for parasites that are difficult to identify under a microscope based only on their phenotypes.…”

Section: Fungal Epidemics and Methodological Limitationsmentioning

confidence: 99%

Parasitic fungi of phytoplankton: ecological roles and implications for microbial food webs

Rasconi¹,

Jobard²,

Sime-Ngando³

2011

Aquat. Microb. Ecol.

View full text Add to dashboard Cite

Microbial parasites typically are characterized by their small size, short generation time, and high rates of reproduction, with a simple life cycle occurring generally within a single host. They are diverse and ubiquitous in aquatic ecosystems, comprising viruses, prokaryotes, and eukaryotes. Recently, environmental 18S rDNA surveys of microbial eukaryotes have unveiled major infecting agents in pelagic systems, consisting primarily of chytrids (Chytridiomycota). Chytrids are external eucarpic parasites that infect diverse prokaryotic and eukaryotic algae, primarily diatoms and filamentous species. They produce specialized rhizoidal systems within host cells, i.e. the nutrient conveying system for the formation of fruit bodies (sporangia) from which propagules (motile uniflagellated zoospores) are released into the environment. In this review, we summarize the ecological potential of parasites of phytoplankton and infer the implications for food web dynamics. We focus on chytrids, together with other parasitic eukaryotes, with special emphasis on (1) the role of microparasites in driving the structure of phytoplankton communities, (2) the role of chytrid zoospores in matter and energy transfer, and (3) the potential consequences of infections for food web dynamics. We raise the question of genetic potential from host -parasite interactions and also of how environmental factors might affect the host -parasite relationships in the pelagic realm.

show abstract

Section: Fungal Epidemics and Methodological Limitationsmentioning

confidence: 99%

Parasitic fungi of phytoplankton: ecological roles and implications for microbial food webs

Rasconi¹,

Jobard²,

Sime-Ngando³

2011

Aquat. Microb. Ecol.

View full text Add to dashboard Cite

show abstract

“…Isolated species were identified based on microscopic observation of the thallus and identification keys (Sparrow 1960). Cultures were grown and DNA extracted as described by Letcher et al (2004a). Partial 28S rDNA was amplified and sequenced with the LROR and LR5 primers.…”

Section: Zoosporic Fungal Isolationmentioning

confidence: 99%

“…Maximum parsimony (MP) and Maximum likelihood (ML) phylogenetic trees were constructed. MP trees were constructed using PAUPRat (Sikes & Lewis 2001); a majority rule consensus tree was constructed, and branch support was determined as described by Letcher et al (2004a). From ModelTest (v.3.7) (Posada & Crandall, 1998), the Akaike information criterion was used to determine the most appropriate model of DNA substitution.…”

Section: Phylogenetic Analysismentioning

confidence: 99%

Temporal variation of the small eukaryotic community in two freshwater lakes: emphasis on zoosporic fungi

Lefèvre¹,

Letcher²,

Powell³

2012

Aquat. Microb. Ecol.

View full text Add to dashboard Cite

“…Members of the Chytridiomycota are known to be widespread in freshwater ecosystems, where they act as parasites and decomposers (Johnson et al, 2006;Kagami et al, 2012). Chytridiomycota were more abundant in the area under anthropogenic impact and were mostly represented by Rhizophidium, members of which are phytopathogens and alga parasites (Letcher et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

Hidden diversity of micro-eukaryotes in Lake Baikal: a metagenomic approach

Mincheva

Peretolchina

Кравцова

et al. 2019

LFWB

View full text Add to dashboard Cite

We have studied the diversity and composition of communities of micro-eukaryotes from two localities: area under anthropogenic impact near the town of Baikalsk and reference area, Irinda Bay, based on high-throughput ITS2 rDNA region sequencing. High taxonomic diversity of micro-eukaryotes has been revealed in both localities studied. However, micro-eukaryotic community from the area under anthropogenic impact is depressed, compared to reference area. Analysis of taxonomic diversity has revealed that community from the area under anthropogenic impact has a trend towards a decrease in diversity. Among the detected taxa, Alveolata, Stramenopiles and Fungi prevailed. Sörensen index of OTUs was 65%, which indicates the similarity of communities studied by taxonomic composition. The spectrum of Alveolata and Stramenopiles taxa identified in the area under the anthropogenic impact and the reference area was similar. The main differences were revealed in spectrum of Fungi taxa.

show abstract

Phylogenetic relationships amongRhizophydiumisolates from North America and Australia

Cited by 25 publications

References 40 publications

Parasitic fungi of phytoplankton: ecological roles and implications for microbial food webs

Parasitic fungi of phytoplankton: ecological roles and implications for microbial food webs

Temporal variation of the small eukaryotic community in two freshwater lakes: emphasis on zoosporic fungi

Hidden diversity of micro-eukaryotes in Lake Baikal: a metagenomic approach

Contact Info

Product

Resources

About