New record and phylogenetic affinities of the oomycete Olpidiopsis feldmanni infecting Asparagopsis sp. (Rhodophyta)

Fletcher, Kyle; uljević, Ante; Tsirigoti, Amerssa; Antolić, Boris; Katsaros, Christos; Nikolić, Vedran; West, Pieter van; Küpper, Frithjof C.

doi:10.3354/dao02930

Cited by 20 publications

(14 citation statements)

References 34 publications

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“…2019; Fletcher et al. 2015). These sequences are 99% similar to Anisolpidium rosenvingei , which is known to infect the brown algae Pylaiella littoralis (Gachon et al.…”

Section: Discussionmentioning

confidence: 99%

Microeukaryotic Communities Associated With the Seagrass Zostera marina Are Spatially Structured

Segóvia

Sanders‐Smith

Adamczyk

et al. 2020

J Eukaryotic Microbiology

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Epibiotic microorganisms link seagrass productivity to higher trophic levels, but little is known about the processes structuring these communities, and which taxa consistently associate with seagrass. We investigated epibiotic microeukaryotes on seagrass (Zostera marina) leaves, substrates, and planktonic microeukaryotes in ten meadows in the Northeast Pacific. Seagrass epibiotic communities are distinct from planktonic and substrate communities. We found sixteen core microeukaryotes, including dinoflagellates, diatoms, and saprotrophic stramenopiles. Some likely use seagrass leaves as a substrate, others for grazing, or they may be saprotrophic organisms involved in seagrass decomposition or parasites; their relatives have been previously reported from marine sediments and in association with other hosts such as seaweeds. Core microeukaryotes were spatially structured, and none were ubiquitous across meadows. Seagrass epibiota were more spatially structured than planktonic communities, mostly due to spatial distance and changes in abiotic conditions across space. Seawater communities were relatively more similar in composition across sites and more influenced by the environmental component, but more variable over time. Core and transient taxa were both mostly structured by spatial distance and the abiotic environment, with little effect of host attributes, further indicating that those core taxa would not show a strong specific association with Z. marina.

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“…2019; Fletcher et al. 2015). These sequences are 99% similar to Anisolpidium rosenvingei , which is known to infect the brown algae Pylaiella littoralis (Gachon et al.…”

Section: Discussionmentioning

confidence: 99%

Microeukaryotic Communities Associated With the Seagrass Zostera marina Are Spatially Structured

Segóvia

Sanders‐Smith

Adamczyk

et al. 2020

J Eukaryotic Microbiology

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“…Em teste de variedade de hospedeiros, Pemberton et al (1990) observaram que vinte espécies de Pythium e duas de Phytophthora foram infectadas por O. gracilis, ampliando consideravelmente a gama de oomicetos hospedeiros do parasita. Observando que, enquanto não se suprir novas descrições com dados genéticos moleculares além dos dados morfológicos (e ecológicos), o que não foi possível neste estudo, é prudente evitar novas descrições fundamentadas apenas em correlações morfológicas com as espécies já descritas e seus hospedeiros conhecidos, como ressaltado por Sekimoto et al (2009);Fletcher et al (2015); Klochkova et al (2016) e Kwak et al (2017).…”

Section: Olpidiopsis Sp1unclassified

“…Para erigir O. indica, Srivastava (1975) Porém, a análise genética tem sido realizada em somente algumas espécies. As poucas espécies terrestres ou de água doce para as quais se tem disponível alguma informação sobre ultraestrutura são O. saprolegnia (Bortinick et al 1985) e O. varians (Martin & Muller 1986a;1986b;1986c), e quatro espécies e uma variedade marinhas, O. prophyarae (Sekimoto et al 2008a), O. bostrychiae (Sekimoto et al 2009), O. feldmanni (Fletcher et al 2015), O. pyropiae (Klochkova et al 2016) e O. porphyrae var. koreanae (Kwak et al 2017).…”

Section: Olpidiopsis Sp1unclassified

“…koreanae (Kwak et al 2017). Todas as seis espécies conhecidas de Olpidiopsis que foram descritas como endoparasitas de algas marinhas vermelhas apresentam morfologia muito simples, são holocárpicas e não oospóricas, nenhum estágio sexual foi relatado para alguma destas espécies de ambiente marinho e a identificação dessas novas espécies requereu estudos filogenéticos moleculares e de microscopia de transmissão visando garantir a identidade das mesmas (Sekimoto et al 2009;Fletcher et al 2015;Klochkova et al 2016;Kwak et al 2017).…”

Section: Olpidiopsis Sp1unclassified

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O gênero Olpidiopsis (Oomycota) no Nordeste do Brasil

et al. 2018

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Resumo Estudos sobre a diversidade de oomicetos foram realizados de 1998 a 2016, na Bahia, Maranhão e Piauí, e parasitas biotróficos holocárpicos zoospóricos de quitrídias, glomeromicetos e oomicetos foram identificados como Olpidiopsis achlyae, O. aphanomycis, O. fusiformis, O. karlingae, Olpidiopsis sp1 e Olpidiopsis sp2. A ocorrência de O. karlingae é novo relato para a América do Sul e de O. aphanomycis, para o Brasil. Os táxons encontrados foram descritos, ilustrados e comentados. A diversidade de termos da literatura especializada para identificação das estruturas morfológicas de Olpidiopsis foi padronizada. São propostas as sinonímias de O. braziliensis (= Pseudolpidium achlyae) com O. fusiformis e de Cornumyces karlingae com O. karlingae.

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“…Interest in these organisms resurged when it was realised that while only few species have a severe adverse effect on economy, their ecological importance in natural ecosystems has been largely underestimated ( Gachon et al 2010 , Beakes et al . 2012 , Fletcher et al . 2015 , Scholz et al .…”

Section: Introductionmentioning

confidence: 99%

Bolbea parasitica gen. et sp. nov., a cultivable holocarpic parasitoid of the early-diverging Saprolegniomycetes

Buaya

Thines

2020

Fungal Systematics and Evolution

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Holocarpic oomycetes convert their entire cytoplasm into zoospores and thus do not form dedicated sporangia or hyphal compartments for asexual reproduction. The majority of holocarpic oomycetes are obligate parasites and parasitoids of a diverse suite of organisms, among them green and red algae, brown seaweeds, diatoms, fungi, oomycetes and invertebrates. Most of them are found among the early diverging oomycetes or the Peronosporomycetes, and some in the early-diverging Saprolegniomycetes (Leptomitales). The obligate parasitism renders it difficult to study some of these organisms. Only a few members of the genus Haliphthoros s. l. have been cultured without their hosts, and of the parasitoid Leptomitales, some transient cultures have been established, which are difficult to maintain. Here, the cultivation of a new holocarpic oomycete genus of the Leptomitales, Bolbea, is presented. Bolbea is parasitic to ostracods, is readily cultivable on malt extract agar, and upon contact with water converts its cytoplasm into zoospores. Its morphology and phylogenetic relationships are reported. Due to the ease of cultivation and the ready triggering of zoospore development, similar to some lagenidiaceous oomycetes, the species could be a promising model to study sporulation processes in detail.

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New record and phylogenetic affinities of the oomycete Olpidiopsis feldmanni infecting Asparagopsis sp. (Rhodophyta)

Cited by 20 publications

References 34 publications

Microeukaryotic Communities Associated With the Seagrass Zostera marina Are Spatially Structured

Microeukaryotic Communities Associated With the Seagrass Zostera marina Are Spatially Structured

O gênero Olpidiopsis (Oomycota) no Nordeste do Brasil

Bolbea parasitica gen. et sp. nov., a cultivable holocarpic parasitoid of the early-diverging Saprolegniomycetes

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