Widespread Detection of Phytophthora Taxon Salixsoil in the Littoral Zone of Lake Constance, Germany

Nechwatal, Jan; Mendgen, Kurt

doi:10.1007/s10658-005-5593-y

Cited by 19 publications

(18 citation statements)

References 9 publications

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“…These species are found in Europe, North America and Australia (Brasier et al 2003, Reeser et al 2011, Stukely 2012. Both appear to be strongly associated with aquatic habitats where they are thought to exist as saprotrophs on plant debris (Brasier et al 2003, Nechwatal andMendgen 2006). However, they also infect living plants, such as Salix spp.…”

Section: Figmentioning

confidence: 99%

MultiplePhytophthoraspecies associated with a single riparian ecosystem in South Africa

Nagel¹,

Slippers²,

Wingfield

et al. 2015

Mycologia

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The diversity of Phytophthora spp. in rivers and riparian ecosystems has received considerable international attention, although little such research has been conducted in South Africa. This study determined the diversity of Phytophthora spp. within a single river in Gauteng province of South Africa. Samples were collected over 1 y including biweekly river baiting with Rhododendron indicum leaves. Phytophthora isolates were identified with phylogenetic analyses of sequences for the internal transcribed spacer (ITS) region of the ribosomal DNA and the mitochondrial cytochrome oxidase c subunit I (coxI) gene. Eight Phytophthora spp. were identified, including a new taxon, P. taxon Sisulu-river, and two hybrid species from Cooke's ITS clade 6. Of these, species from Clade 6 were the most abundant, including P. chlamydospora and P. lacustris. Species residing in Clade 2 also were encountered, including P. multivora, P. plurivora and P. citrophthora. The detection of eight species in this investigation of Phytophthora diversity in a single riparian river ecosystem in northern South Africa adds to the known diversity of this genus in South Africa and globally.

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Section: Figmentioning

confidence: 99%

MultiplePhytophthoraspecies associated with a single riparian ecosystem in South Africa

Nagel¹,

Slippers²,

Wingfield

et al. 2015

Mycologia

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“…(Nechwatal & Mendgen 2006b), and two isolates of an Aphanomyces with spiny oogonia. One to seven individual oomycete isolates were obtained from a single soil sample.…”

Section: Baiting Species Characterisation and Identificationmentioning

confidence: 99%

Diversity, host, and habitat specificity of oomycete communities in declining reed stands (Phragmites australis) of a large freshwater lake

Nechwatal¹,

Wielgoss²,

Mendgen³

2008

Mycological Research

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Natural ecosystem Phytophthora Pythium Reed dieback a b s t r a c tWe studied the diversity of oomycetes in a declining reed belt (Phragmites australis) of Lake Constance, Germany, using conventional baiting with specific reed and standard oak baits, accompanied by molecular techniques. Apart from an Aphanomyces sp. and a Phytophthora sp., baiting from reed rhizosphere samples from flooded, as well as drier, littoral sites revealed only Pythium spp. A total of 67 oomycete isolates was classified according to PCR-RFLP banding patterns and ITS sequencing, and 18 different sequence types could be separated. The majority of these seemed previously unknown species, as indicated by the degree of similarity to those deposited in nucleotide databases. Species communities in both flooded and drier habitats or both reed and oak baits clearly differed from one another, and only few species occurred in both dry and flooded sites, or in both oak and reed baits. A frequently occurring group of related Pythium species appeared to be specifically associated with reed, and these were the only species that proved pathogenic towards this host in vitro. Our study proved that unexplored natural ecosystems harbour diverse communities of oomycete species with specific habitat and host preferences within close-by, but ecologically contrasting, sites. Among the species isolated, those associated with the predominating plant might accumulate and thus may be reed pathogens of considerable importance.

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“…1). The isolates were identified to species based on PCR amplification with the species-specific primers [5]. On the basis of the growth rate and colony morphology observed on the PDA medium they were divided into 10 groups.…”

Section: Methodsmentioning

confidence: 99%

“…It has been increasingly isolated from the rhizosphere, soil, and water [4]. Especially the separation of this taxon from similar P. gonapodyides has resulted in an avalanche of reports about its mass isolation from a variety of aquatic habitats, wetlands and nurseries [4][5][6][7][8][9][10]. P. lacustris belongs to the Clade 6, the group of species connected with water environment and trees, and tolerant of high temperatures [11,12].…”

mentioning

confidence: 99%

Characterization of Polish Phytophthora lacustris Isolates Obtained from Water Environments

Nowak¹,

Trzewik²,

Tułacz³

et al. 2015

Pol. J. Environ. Stud.

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Widespread Detection of Phytophthora Taxon Salixsoil in the Littoral Zone of Lake Constance, Germany

Cited by 19 publications

References 9 publications

MultiplePhytophthoraspecies associated with a single riparian ecosystem in South Africa

MultiplePhytophthoraspecies associated with a single riparian ecosystem in South Africa

Diversity, host, and habitat specificity of oomycete communities in declining reed stands (Phragmites australis) of a large freshwater lake

Characterization of Polish Phytophthora lacustris Isolates Obtained from Water Environments

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