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Martha J. Powell - One of the best experts on this subject based on the ideXlab platform.
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morphology zoospore ultrastructure and phylogenetic position of polyphlyctis willoughbyi a new species in Chytridiales chytridiomycota
Fungal Biology, 2018Co-Authors: Peter M. Letcher, Martha J. PowellAbstract:Abstract The purpose of our research is to investigate the morphology, zoospore ultrastructure, and molecular phylogenetic placement of a chytrid from Australia. From a survey of chytrid fungi in New South Wales, Australia, we isolated strain PL AUS 026 and putatively identified it as Polyphlyctis unispina. Light microscopic evaluation determined strain PL AUS 026 to be similar to two other strains of P. unispina characterized in the literature but to have a more complex thallus than that of the type. Molecular phylogenetic analyses placed our strain as sister of or basal to Chytridiaceae, Chytridiales. Ultrastructural analysis of the zoospore of strain PL AUS 026 revealed unique features. On the basis of our analyses we designate strain PL AUS 026 as a new species, Polyphlyctis willoughbyi. This research extends our concept of Chytridiaceae systematics and ultrastructural variation in the Chytridiales zoospore.
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morphology zoospore ultrastructure and molecular position of taxa in the asterophlyctis lineage Chytridiales chytridiomycota
Fungal Biology, 2018Co-Authors: Peter M. Letcher, Martha J. Powell, William J DavisAbstract:Abstract The purpose of our research is to investigate morphology, zoospore ultrastructure, and molecular placement of six strains in the Asterophlyctis (Chytridiales) lineage. In previous molecular analyses strain JEL 186, putatively Asterophlyctis sarcoptoides, placed as basal in family Chytriomycetaceae. Recent sampling for chytrids resulted in isolation of five strains (WJD 209, MP 058, JEL 524, JEL 857, and JEL 885) molecularly related to strain JEL 186. Our morphological evaluations reveal that strains JEL 186 and WJD 209 are members of Asterophlyctis. Strain WJD 209 is considered representative of the type, A. sarcoptoides, and strain JEL 186 a new species, Asterophlyctis michiganensis. The four strains MP 058, JEL 524, JEL 857, and JEL 885 are distinct from Asterophlyctis, and we consider them as members of a new genus, Wheelerophlyctis, composed of two species, Wheelerophlyctis interior and Wheelerophlyctis interiexterior. Asterophlyctis and Wheelerophlyctis are sister taxa and we demarcate that lineage as Asterophlyctaceae. The two genera also have similar zoospore ultrastructure, which is unique among strains in Chytridiales. In consideration of their molecular position and zoospore ultrastructure, we hypothesize that Asterophlyctis and Wheelerophlyctis represent a bridge between Chytriomycetaceae and Chytridiaceae. This research expands our concepts of systematics and zoospore ultrastructural variation in Chytridiales.
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Zopfochytrium is a new genus in the Chytridiales with distinct zoospore ultrastructure.
Fungal biology, 2018Co-Authors: Martha J. Powell, Joyce E Longcore, Peter M. Letcher, Will H. BlackwellAbstract:Abstract While surveying chytrid diversity in lakes and streams, we found on cellulosic bait a chytrid that had both monocentric and polycentric thallus forms. We brought this chytrid into axenic culture from three sites in eastern North America, studied its thallus development and zoospore ultrastructure, and compared its 28S rDNA sequence with those of other members of the Chytridiomycota. Thallus morphology matched that described for the rare chytrid, Cladochytrium polystomum Zopf. Sporangia were spherical and produced numerous long discharge tubes. After discharge, zoospores remained in spherical clusters at the tips of the inoperculate openings of discharge tubes. After 10–30 min zoospores either swam away or encysted in place. Zoospore ultrastructural features included a cell coat, flagellar plug, and paracrystalline inclusion, features typical of members of the Chytridiales. However, the flagellar apparatus structure and organellar organization differed from that of zoospores previously described. Based on its molecular phylogeny and its zoospore ultrastructural features, we classify C. polystomum as a member of the Chytridiaceae in the Chytridiales. Because its thallus development and its ribosomal DNA sequences diverged decidedly from those of Cladochytrium tenue Nowak, the type species of Cladochytrium, we erected Zopfochytrium as a new genus for this chytrid.
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Ultrastructural and molecular delineation of the Chytridiaceae (Chytridiales)
2016Co-Authors: Peter M. Letcher, Joyce E Longcore, Perry F Churchill, James G Chambers, Martha J. Powell, Phillip M. HarrisAbstract:Abstract: The Chytridiomycota is in need of taxonomic revision, especially the largest order, the Chytridiales. We ana-lyzed 25 isolates in, or allied to, the Chytridium clade of this order. Isolates were selected based on one or more of the fol-lowing criteria: (i) having a large subunit molecular sequence similar to that of the type of the genus Chytriomyces, (ii) having specific zoospore morphology, and (iii) currently classified as a species in the genus Chytriomyces. We examined ultrastructural characters and partial sequences of large subunit and small subunit rDNA and generated a phylogenetic hy-pothesis using maximum parsimony and Bayesian analyses. The sequence analyses strongly supported the Chytridiaceae, Phlyctochytrium, and Chytriomyces angularis clades, and each clade had a specific zoospore type. Developmental mor-phology of the thallus did not mirror the DNA-based phylogeny. Based on the results of phylogenetic analyses of sequen-ces and ultrastructural characters, we emend the Chytridiaceae by including exogenous and polycentric development and define the family on the basis of a single zoospore type. Species identified as being in the genus Chytriomyces occur in several separate, well-supported clades along with species currently classified in seven other genera (Asterophlyctis, Ento-phlyctis, Obelidium, Physocladia, Podochytrium, Rhizoclosmatium, and Siphonaria), indicating that Chytriomyces as cur-rently defined is polyphyletic
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2016Co-Authors: Peter M. Letcher, Martha J. PowellAbstract:- Nova Hedwigia 80: 115-133. Abstract: A new genus for a chytrid member of the Rhizophydium clade is described. Many Rhizophydium clade members exhibit simple and variable thallus morphology, and thus some species may be identical, while others may be members of species complexes and represent distinct genera. A minute chytrid found colonizing pollen grains had zoospore ultrastructure and a sequence of the large subunit ribosomal rRNA gene different from the molecular constitution of 22 isolates in the core Rhizophydium clade. Unlike typical Rhizophydium zoospores, the zoospore of Kappamyces laurelensis gen. et sp. nov. lacked a rumposome, kinetosome-associated electron-opaque spur, and kinetosome-associated microtubular root. Distinct from the typical Rhizophydium zoospore, the kinetosome abutted a single mitochondrion, both the kinetosome and non-flagellated centriole had an electron-opaque core composed of dense material, and a ring of distinct vesicles surrounded the kinetosome. In a parsimony analysis of large subunit rRNA gene sequences, a grouping of K. lau-relensis and two other isolates were sister to the core Rhizophydium clade, and both the K. laurelensis group and the core Rhizophydium clade had 100 % bootstrap support. The zoospore of K. laurelensis may be the simplest type of zoospore in the Chytridiales. Key words: chytrid, large subunit rRNA gene, Rhizophydium, ultrastructure, zoospor
Joyce E Longcore - One of the best experts on this subject based on the ideXlab platform.
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Zopfochytrium is a new genus in the Chytridiales with distinct zoospore ultrastructure.
Fungal biology, 2018Co-Authors: Martha J. Powell, Joyce E Longcore, Peter M. Letcher, Will H. BlackwellAbstract:Abstract While surveying chytrid diversity in lakes and streams, we found on cellulosic bait a chytrid that had both monocentric and polycentric thallus forms. We brought this chytrid into axenic culture from three sites in eastern North America, studied its thallus development and zoospore ultrastructure, and compared its 28S rDNA sequence with those of other members of the Chytridiomycota. Thallus morphology matched that described for the rare chytrid, Cladochytrium polystomum Zopf. Sporangia were spherical and produced numerous long discharge tubes. After discharge, zoospores remained in spherical clusters at the tips of the inoperculate openings of discharge tubes. After 10–30 min zoospores either swam away or encysted in place. Zoospore ultrastructural features included a cell coat, flagellar plug, and paracrystalline inclusion, features typical of members of the Chytridiales. However, the flagellar apparatus structure and organellar organization differed from that of zoospores previously described. Based on its molecular phylogeny and its zoospore ultrastructural features, we classify C. polystomum as a member of the Chytridiaceae in the Chytridiales. Because its thallus development and its ribosomal DNA sequences diverged decidedly from those of Cladochytrium tenue Nowak, the type species of Cladochytrium, we erected Zopfochytrium as a new genus for this chytrid.
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Ultrastructural and molecular delineation of the Chytridiaceae (Chytridiales)
2016Co-Authors: Peter M. Letcher, Joyce E Longcore, Perry F Churchill, James G Chambers, Martha J. Powell, Phillip M. HarrisAbstract:Abstract: The Chytridiomycota is in need of taxonomic revision, especially the largest order, the Chytridiales. We ana-lyzed 25 isolates in, or allied to, the Chytridium clade of this order. Isolates were selected based on one or more of the fol-lowing criteria: (i) having a large subunit molecular sequence similar to that of the type of the genus Chytriomyces, (ii) having specific zoospore morphology, and (iii) currently classified as a species in the genus Chytriomyces. We examined ultrastructural characters and partial sequences of large subunit and small subunit rDNA and generated a phylogenetic hy-pothesis using maximum parsimony and Bayesian analyses. The sequence analyses strongly supported the Chytridiaceae, Phlyctochytrium, and Chytriomyces angularis clades, and each clade had a specific zoospore type. Developmental mor-phology of the thallus did not mirror the DNA-based phylogeny. Based on the results of phylogenetic analyses of sequen-ces and ultrastructural characters, we emend the Chytridiaceae by including exogenous and polycentric development and define the family on the basis of a single zoospore type. Species identified as being in the genus Chytriomyces occur in several separate, well-supported clades along with species currently classified in seven other genera (Asterophlyctis, Ento-phlyctis, Obelidium, Physocladia, Podochytrium, Rhizoclosmatium, and Siphonaria), indicating that Chytriomyces as cur-rently defined is polyphyletic
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fayochytriomyces a new genus within Chytridiales
Mycologia, 2015Co-Authors: William J Davis, Joyce E Longcore, Peter M. Letcher, Martha J. PowellAbstract:Chytriomyces is a complex genus in Chytridiales. The morphological concept of the genus expanded as new taxa were added, and studies of zoospore ultrastructure and molecular phylogenies have revealed the genus to be polyphyletic. One problematic taxon is C. spinosus Fay, a distinctive species characterized by whorls of spines on the zoosporangium and a large accumulation of vesicle material beneath the operculum. With light-, scanning-electron and transmission-electron microscopy, we examined a culture (WJD186) isolated from a muck sample collected from a temporary forest pond. We also analyzed the D1–D2 variable domains of the nuc 28S rDNA (28S) sequences to confirm the phylogenetic placement of the species relative to the type of Chytriomyces, C. hyalinus Karling. The morphology of culture WJD186 is consistent with features Fay described for C. spinosus, and the zoospore ultrastructure is consistent with the Group I-type zoospore characters of Chytriomycetaceae (Chytridiales). In our molecular phylogeny...
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irineochytrium a new genus in Chytridiales having zoospores and aplanospores
Mycologia, 2014Co-Authors: Peter M. Letcher, Joyce E Longcore, Martha J. PowellAbstract:Many described chytrids exhibit distinct morphological features that permit positive identification by light microscopy. Chytriomyces annulatus is one such species. It has a flap-like operculum and its sporangial wall is ornamented with multiple collar-like annulations proximal to the rhizoidal axis, features that, in combination, do not occur in any other described chytrid. Recent molecular phylogenies placed C. annulatus in the Chytridiaceae (Chytridiales) lineage, which is characterized by a Group II zoospore. Here we use light microscopy and transmission electron microscopy to examine thallus morphology of an isolate (JEL 729) of C. annulatus to confirm its identity and transmission electron microscopy to examine zoospore ultrastructure to confirm its phylogenetic placement. Light microscopic examinations confirmed its identity, and transmission electron microscopy analysis revealed both motile spores (zoospores) and nonmotile spores (aplanospores). Zoospores had a unique suite of ultrastructural feat...
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dendrochytridium crassum gen et sp nov a taxon in Chytridiales with unique zoospore ultrastructure
Mycologia, 2014Co-Authors: Peter M. Letcher, Joyce E Longcore, Martha J. PowellAbstract:A water culture of detritus collected from an Australian tree canopy yielded multiple isolates (designated JEL 352, JEL 353, JEL 354) of an unidentified chytrid that grew on pollen bait and encysted spores of a Dictyuchus sp. oomycete. Morphological information from JEL 352 and genetic information from JEL 354 of this unidentified chytrid have been in several publications but the organism has not been named. Because isolates JEL 352 and JEL 354 are no longer viable, we sequenced partial SSU and LSU rDNA of isolate JEL 353, documented its thallus morphology with light microscopy and determined its zoospore ultrastructure via transmission electron microscopy. DNA evidence placed JEL 353 in Chytridiaceae, and its genetic composition was identical to that of JEL 354. Thallus morphology of JEL 353 was similar to that of JEL 352. Its zoospore ultrastructure is less complex compared to other members of Chytridiaceae. In pure culture, the rhizoidal system differed from other members of the family in being unevenly broad and not tapering to fine tips. Based on genetic, morphological and ultrastructural evidence, we place this chytrid in a new genus in Chytridiaceae and describe it as the new species Dendrochytridium crassum.
Peter M. Letcher - One of the best experts on this subject based on the ideXlab platform.
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morphology zoospore ultrastructure and phylogenetic position of polyphlyctis willoughbyi a new species in Chytridiales chytridiomycota
Fungal Biology, 2018Co-Authors: Peter M. Letcher, Martha J. PowellAbstract:Abstract The purpose of our research is to investigate the morphology, zoospore ultrastructure, and molecular phylogenetic placement of a chytrid from Australia. From a survey of chytrid fungi in New South Wales, Australia, we isolated strain PL AUS 026 and putatively identified it as Polyphlyctis unispina. Light microscopic evaluation determined strain PL AUS 026 to be similar to two other strains of P. unispina characterized in the literature but to have a more complex thallus than that of the type. Molecular phylogenetic analyses placed our strain as sister of or basal to Chytridiaceae, Chytridiales. Ultrastructural analysis of the zoospore of strain PL AUS 026 revealed unique features. On the basis of our analyses we designate strain PL AUS 026 as a new species, Polyphlyctis willoughbyi. This research extends our concept of Chytridiaceae systematics and ultrastructural variation in the Chytridiales zoospore.
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morphology zoospore ultrastructure and molecular position of taxa in the asterophlyctis lineage Chytridiales chytridiomycota
Fungal Biology, 2018Co-Authors: Peter M. Letcher, Martha J. Powell, William J DavisAbstract:Abstract The purpose of our research is to investigate morphology, zoospore ultrastructure, and molecular placement of six strains in the Asterophlyctis (Chytridiales) lineage. In previous molecular analyses strain JEL 186, putatively Asterophlyctis sarcoptoides, placed as basal in family Chytriomycetaceae. Recent sampling for chytrids resulted in isolation of five strains (WJD 209, MP 058, JEL 524, JEL 857, and JEL 885) molecularly related to strain JEL 186. Our morphological evaluations reveal that strains JEL 186 and WJD 209 are members of Asterophlyctis. Strain WJD 209 is considered representative of the type, A. sarcoptoides, and strain JEL 186 a new species, Asterophlyctis michiganensis. The four strains MP 058, JEL 524, JEL 857, and JEL 885 are distinct from Asterophlyctis, and we consider them as members of a new genus, Wheelerophlyctis, composed of two species, Wheelerophlyctis interior and Wheelerophlyctis interiexterior. Asterophlyctis and Wheelerophlyctis are sister taxa and we demarcate that lineage as Asterophlyctaceae. The two genera also have similar zoospore ultrastructure, which is unique among strains in Chytridiales. In consideration of their molecular position and zoospore ultrastructure, we hypothesize that Asterophlyctis and Wheelerophlyctis represent a bridge between Chytriomycetaceae and Chytridiaceae. This research expands our concepts of systematics and zoospore ultrastructural variation in Chytridiales.
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Zopfochytrium is a new genus in the Chytridiales with distinct zoospore ultrastructure.
Fungal biology, 2018Co-Authors: Martha J. Powell, Joyce E Longcore, Peter M. Letcher, Will H. BlackwellAbstract:Abstract While surveying chytrid diversity in lakes and streams, we found on cellulosic bait a chytrid that had both monocentric and polycentric thallus forms. We brought this chytrid into axenic culture from three sites in eastern North America, studied its thallus development and zoospore ultrastructure, and compared its 28S rDNA sequence with those of other members of the Chytridiomycota. Thallus morphology matched that described for the rare chytrid, Cladochytrium polystomum Zopf. Sporangia were spherical and produced numerous long discharge tubes. After discharge, zoospores remained in spherical clusters at the tips of the inoperculate openings of discharge tubes. After 10–30 min zoospores either swam away or encysted in place. Zoospore ultrastructural features included a cell coat, flagellar plug, and paracrystalline inclusion, features typical of members of the Chytridiales. However, the flagellar apparatus structure and organellar organization differed from that of zoospores previously described. Based on its molecular phylogeny and its zoospore ultrastructural features, we classify C. polystomum as a member of the Chytridiaceae in the Chytridiales. Because its thallus development and its ribosomal DNA sequences diverged decidedly from those of Cladochytrium tenue Nowak, the type species of Cladochytrium, we erected Zopfochytrium as a new genus for this chytrid.
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Ultrastructural and molecular delineation of the Chytridiaceae (Chytridiales)
2016Co-Authors: Peter M. Letcher, Joyce E Longcore, Perry F Churchill, James G Chambers, Martha J. Powell, Phillip M. HarrisAbstract:Abstract: The Chytridiomycota is in need of taxonomic revision, especially the largest order, the Chytridiales. We ana-lyzed 25 isolates in, or allied to, the Chytridium clade of this order. Isolates were selected based on one or more of the fol-lowing criteria: (i) having a large subunit molecular sequence similar to that of the type of the genus Chytriomyces, (ii) having specific zoospore morphology, and (iii) currently classified as a species in the genus Chytriomyces. We examined ultrastructural characters and partial sequences of large subunit and small subunit rDNA and generated a phylogenetic hy-pothesis using maximum parsimony and Bayesian analyses. The sequence analyses strongly supported the Chytridiaceae, Phlyctochytrium, and Chytriomyces angularis clades, and each clade had a specific zoospore type. Developmental mor-phology of the thallus did not mirror the DNA-based phylogeny. Based on the results of phylogenetic analyses of sequen-ces and ultrastructural characters, we emend the Chytridiaceae by including exogenous and polycentric development and define the family on the basis of a single zoospore type. Species identified as being in the genus Chytriomyces occur in several separate, well-supported clades along with species currently classified in seven other genera (Asterophlyctis, Ento-phlyctis, Obelidium, Physocladia, Podochytrium, Rhizoclosmatium, and Siphonaria), indicating that Chytriomyces as cur-rently defined is polyphyletic
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2016Co-Authors: Peter M. Letcher, Martha J. PowellAbstract:- Nova Hedwigia 80: 115-133. Abstract: A new genus for a chytrid member of the Rhizophydium clade is described. Many Rhizophydium clade members exhibit simple and variable thallus morphology, and thus some species may be identical, while others may be members of species complexes and represent distinct genera. A minute chytrid found colonizing pollen grains had zoospore ultrastructure and a sequence of the large subunit ribosomal rRNA gene different from the molecular constitution of 22 isolates in the core Rhizophydium clade. Unlike typical Rhizophydium zoospores, the zoospore of Kappamyces laurelensis gen. et sp. nov. lacked a rumposome, kinetosome-associated electron-opaque spur, and kinetosome-associated microtubular root. Distinct from the typical Rhizophydium zoospore, the kinetosome abutted a single mitochondrion, both the kinetosome and non-flagellated centriole had an electron-opaque core composed of dense material, and a ring of distinct vesicles surrounded the kinetosome. In a parsimony analysis of large subunit rRNA gene sequences, a grouping of K. lau-relensis and two other isolates were sister to the core Rhizophydium clade, and both the K. laurelensis group and the core Rhizophydium clade had 100 % bootstrap support. The zoospore of K. laurelensis may be the simplest type of zoospore in the Chytridiales. Key words: chytrid, large subunit rRNA gene, Rhizophydium, ultrastructure, zoospor
Pires-zottarelli,carmen Lidia Amorim - One of the best experts on this subject based on the ideXlab platform.
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Chytridiales (Chytridiomycota) do Parque Estadual da Serra da Cantareira, SP, Brasil
Sociedade Botânica do Brasil, 2009Co-Authors: Nascimento,cristiane De Almeida, Pires-zottarelli,carmen Lidia AmorimAbstract:Para o estudo da diversidade de Chytridiales, coletas mensais de água e solo foram realizadas, de junho/2005 a junho/2006, no Parque Estadual da Serra da Cantareira, Estado de São Paulo. O isolamento destes fungos foi realizado por meio do método de iscagem múltipla de amostras de água e solo, em laboratório, com substratos celulósicos, quitinosos e queratinosos. Dezenove espécies foram identificadas, sendo quatro novas ocorrências para o Brasil, Cladochytrium setigerum Karling, Diplophlyctis intestina (Schenk) J. Schröt, Rhizophydium macroporosum Karling e Solutoparies pythii Whiffen ex W.H. Blackw. & Powell, e Septochytrium willoughbyi Dogma primeira citação para o Estado de São Paulo
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Novas citações de Chytridiomycota e Oomycota para o Parque Estadual das Fontes do Ipiranga (PEFI), SP, Brasil
Sociedade Botânica do Brasil, 2007Co-Authors: Pires-zottarelli,carmen Lidia AmorimAbstract:Levantamento de fungos zoospóricos realizado em lagos artificiais do Parque Estadual das Fontes do Ipiranga (PEFI), situado na cidade de São Paulo, Estado de São Paulo, Brasil, resultou no isolamento de 41 táxons, sendo 36 identificados em nível específico. Vinte e três táxons pertencem ao Reino Fungi, filo Chytridiomycota, ordens Chytridiales, Monoblepharidales e Spizellomicetales e, 18 ao Reino Straminipila, filo Oomycota, ordens Saprolegniales e Peronosporales. Dentre os fungos isolados, 14 são mencionados pela primeira vez para o PEFI: Aphanomyces helicoides von Minden, Catenochytridium kevorkianii Sparrow, Catenochytridium sp., Chytriomyces appendiculatus Karling, C. aureus Karling, C. hyalinus Karling, C. spinosus Fay, Diplophlyctis asteroidea Dogma, D. complicata (Willoughby) Dogma, Karlingia dubia Karling, Nowakowskiella hemisphaerospora Shanor, Saprolegnia australis Elliott, Septochytrium variabile Berdan e Truittella sp., os quais são descritos, comentados e ilustrados. O gênero Truitella é mencionado pela primeira vez para o Brasil
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Contribuição para o conhecimento de Chytridiomycota da "Reserva Biológica de Paranapiacaba", Santo André, SP, Brasil
Instituto Virtual da Biodiversidade | BIOTA - FAPESP, 2007Co-Authors: Pires-zottarelli,carmen Lidia Amorim, Gomes,alexandra LenkAbstract:Estudo da diversidade de quitridiomicetos de solo e água, na "Reserva Biológica de Paranapiacaba", resultou no isolamento de 29 espécies, com três Blastocladiales, 23 Chytridiales, uma Monoblepharidales e duas Spizellomycetales. Dos táxons isolados, 69% são citados pela primeira vez para a Reserva, 14% para o estado de São Paulo, e 7% para o país. É a primeira menção de Rhizophydium condylosum Karling no Brasil
Maristela Rocha - One of the best experts on this subject based on the ideXlab platform.
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novas citacoes de chytridiomycota e oomycota para o parque estadual das fontes do ipiranga pefi sp brasil
Acta Botanica Brasilica, 2007Co-Authors: Carmen Lidia Amorim Pireszottarelli, Maristela RochaAbstract:A survey of zoosporic fungi from artificial lakes of the Fontes do Ipiranga State Park, in the city of Sao Paulo, Sao Paulo State, Brazil, yielded the isolation of 41 taxa with 36 species. Twenty-three taxa belong to Chytridiales, Monoblepharidales and Spizellomycetales of the Phylum Chytridiomycota, Fungi Kingdom and 18 belong to Saprolegniales and Peronosporales, Phylum Oomycota, Straminipila Kingdom. Of these, 14 are first-time records for this State Park: Aphanomyces helicoides von Minden, Catenochytridium kevorkianii Sparrow, Catenochytridium sp., Chytriomyces appendiculatus Karling, C. aureus Karling, C. hyalinus Karling, C. spinosus Fay, Diplophlyctis asteroidea Dogma, D. complicata (Willoughby) Dogma, Karlingia dubia Karling, Nowakowskiella hemisphaerospora Shanor, Saprolegnia australis Elliott, Septochytrium variabile Berdan and Truittella sp., which are described, commented and illustrated. The last genus is reported for the first time for Brazil.
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Novas citações de Chytridiomycota e Oomycota para o Parque Estadual das Fontes do Ipiranga (PEFI), SP, Brasil New records of Chytridiomycota and Oomycota from the "Parque Estadual das Fontes do Ipiranga (PEFI)", SP, Brazil
Sociedade Botânica do Brasil, 2007Co-Authors: Carmen Lidia Amorim Pires-zottarelli, Maristela RochaAbstract:Levantamento de fungos zoospóricos realizado em lagos artificiais do Parque Estadual das Fontes do Ipiranga (PEFI), situado na cidade de São Paulo, Estado de São Paulo, Brasil, resultou no isolamento de 41 táxons, sendo 36 identificados em nível específico. Vinte e três táxons pertencem ao Reino Fungi, filo Chytridiomycota, ordens Chytridiales, Monoblepharidales e Spizellomicetales e, 18 ao Reino Straminipila, filo Oomycota, ordens Saprolegniales e Peronosporales. Dentre os fungos isolados, 14 são mencionados pela primeira vez para o PEFI: Aphanomyces helicoides von Minden, Catenochytridium kevorkianii Sparrow, Catenochytridium sp., Chytriomyces appendiculatus Karling, C. aureus Karling, C. hyalinus Karling, C. spinosus Fay, Diplophlyctis asteroidea Dogma, D. complicata (Willoughby) Dogma, Karlingia dubia Karling, Nowakowskiella hemisphaerospora Shanor, Saprolegnia australis Elliott, Septochytrium variabile Berdan e Truittella sp., os quais são descritos, comentados e ilustrados. O gênero Truitella é mencionado pela primeira vez para o Brasil.A survey of zoosporic fungi from artificial lakes of the Fontes do Ipiranga State Park, in the city of São Paulo, São Paulo State, Brazil, yielded the isolation of 41 taxa with 36 species. Twenty-three taxa belong to Chytridiales, Monoblepharidales and Spizellomycetales of the Phylum Chytridiomycota, Fungi Kingdom and 18 belong to Saprolegniales and Peronosporales, Phylum Oomycota, Straminipila Kingdom. Of these, 14 are first-time records for this State Park: Aphanomyces helicoides von Minden, Catenochytridium kevorkianii Sparrow, Catenochytridium sp., Chytriomyces appendiculatus Karling, C. aureus Karling, C. hyalinus Karling, C. spinosus Fay, Diplophlyctis asteroidea Dogma, D. complicata (Willoughby) Dogma, Karlingia dubia Karling, Nowakowskiella hemisphaerospora Shanor, Saprolegnia australis Elliott, Septochytrium variabile Berdan and Truittella sp., which are described, commented and illustrated. The last genus is reported for the first time for Brazil
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chytridiomycota e oomycota da represa do guarapiranga sao paulo sp
Acta Botanica Brasilica, 2002Co-Authors: Maristela Rocha, Carmen Lidia Amorim Pires ZottarelliAbstract:Fifteen taxa of Chytridiomycota and eighteen of Oomycota were isolated from water and soil samples from the Guarapiranga reservoir, using a baiting technique with celulosic, chitinous and keratinous substrates. Among the taxa of Chytridiomycota isolated, one belongs to Blastocladiales, eleven to Chytridiales and three to Spizellomycetales. Among the Oomycota, thirteen are Saprolegniales and five Peronosporales. Septochytrium marilandicum Karling is mentioned for the first time in Brazil.
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Chytridiomycota and Oomycota from the Guarapiranga reservoir, São Paulo State, Brazil
Sociedade Botânica do Brasil, 2002Co-Authors: Maristela Rocha, Zottarelli, Carmen Lidia Amorim PiresAbstract:Quinze táxons de Chytridiomycota e 18 de Oomycota foram isolados de amostras de água e solo na Represa do Guarapiranga, por meio de técnica de iscagem, com substratos celulósicos, queratinosos e quitinosos. Dos táxons de Chytridiomycota isolados, um pertence aos Blastocladiales, onze aos Chytridiales e três aos Spizellomycetales. Dos táxons de Oomycota, treze pertencem aos Saprolegniales e cinco aos Peronosporales. Septochytrium marilandicum Karling é citada pela primeira vez para o Brasil.Fifteen taxa of Chytridiomycota and eighteen of Oomycota were isolated from water and soil samples from the Guarapiranga reservoir, using a baiting technique with celulosic, chitinous and keratinous substrates. Among the taxa of Chytridiomycota isolated, one belongs to Blastocladiales, eleven to Chytridiales and three to Spizellomycetales. Among the Oomycota, thirteen are Saprolegniales and five Peronosporales. Septochytrium marilandicum Karling is mentioned for the first time in Brazil
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Chytridiomycota e Oomycota da Represa do Guarapiranga, São Paulo, SP
Sociedade Botânica do Brasil, 2002Co-Authors: Maristela Rocha, Zottarelli, Carmen Lidia Amorim PiresAbstract:Quinze táxons de Chytridiomycota e 18 de Oomycota foram isolados de amostras de água e solo na Represa do Guarapiranga, por meio de técnica de iscagem, com substratos celulósicos, queratinosos e quitinosos. Dos táxons de Chytridiomycota isolados, um pertence aos Blastocladiales, onze aos Chytridiales e três aos Spizellomycetales. Dos táxons de Oomycota, treze pertencem aos Saprolegniales e cinco aos Peronosporales. Septochytrium marilandicum Karling é citada pela primeira vez para o Brasil