Phytophthora versiformis sp. nov., a new species from Australia related to P. quercina

Paap, T.; Croeser, L.; White, Diane; Aghighi, S.; Barber, P.A.; Hardy, G.; Burgess, Treena I.

doi:10.1007/s13313-017-0499-7

Cited by 12 publications

(7 citation statements)

References 21 publications

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“…versiformis and P. sp. versiformis-like were both frequently isolated from the rhizosphere of a Myrtaceae tree ( Corymbia calophylla ) in remnant bushland, parks and gardens in the southwest of Western Australia (Barber et al 2013, Paap et al 2017). In a metagenomic Phytophthora survey of rhizosphere soils, P .…”

Section: Discussionmentioning

confidence: 99%

“…To resolve the phylogenetic positions of P. castanetorum and P. tubulina within the P. quercina clade, and of the latter within the genus Phytophthora , 24 isolates from seven putative taxa of the P. quercina clade, including P. castanetorum , P. tubulina , P. quercina , P. versiformis (Paap et al 2017), and the undescribed taxa P. sp. ohioensis, P. sp.…”

Section: Methodsmentioning

confidence: 99%

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Multiple new cryptic pathogenic Phytophthora species from Fagaceae forests in Austria, Italy and Portugal

Jung

Cacciola

et al. 2017

IMA Fungus

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During surveys of Phytophthora diversity in natural and semi-natural Fagaceae forests in Austria, Italy and Portugal, four new cryptic species were isolated from rhizosphere soil samples. Multigene phylogeny based on nuclear ITS, ß-tubulin and HSP90 and mitochondrial cox1 and NADH1 gene sequences demonstrated that two species, P. tyrrhenica and P. vulcanica spp. nov., belong to phylogenetic Clade 7a, while the other two species, P. castanetorum and P. tubulina spp. nov., clustered together with P. quercina forming a new clade, named here as Clade 12. All four new species are homothallic and have low optimum and maximum temperatures for growth and very slow growth rates at their respective optimum temperature. They differed from each other and from related species by a unique combination of morphological characters, cardinal temperatures, and growth rates. Pathogenicity of all Phytophthora species to the root system of their respective host species was demonstrated in soil infestation trials.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Multiple new cryptic pathogenic Phytophthora species from Fagaceae forests in Austria, Italy and Portugal

Jung

Cacciola

et al. 2017

IMA Fungus

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“…The first branch inoculation trial was conducted with 29 isolates (Table S2) recovered from the field survey. The second branch inoculation trial had 15 isolates of the then undescribed species P. versiformis (Paap, Croeser, et al, 2017), one from the field survey (MJ5) and 14 from the CPSM collection. A P. cinnamomi (MHSFH2) and P. multivora (TRH5) isolate from the first branch inoculation trial (Table S2) were also included.…”

Section: Excised Branch Trialsmentioning

confidence: 99%

“…The second trial was conducted as P. versiformis was only recently being isolated from C. calophylla rhizosphere samples from Perth urban parklands and across its SWWA range on a regular basis (Barber et al, 2013;Paap, Croeser, et al, 2017). Branches inoculated with sterile agar plugs were used as a control treatment in both trials.…”

Section: Excised Branch Trialsmentioning

confidence: 99%

Field survey, isolation, identification and pathogenicity of Phytophthora species associated with a Mediterranean‐type tree species

et al. 2018

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Summary Corymbia calophylla (marri), a keystone tree species in the global biodiversity hot spot of southwestern Australia, is suffering decline and mortality associated with a canker disease caused by the endemic fungus Quambalaria coyrecup. Phytophthora species are frequently isolated from the rhizosphere of C. calophylla, and a hypothesis is that Phytophthora root infection is predisposing C. calophylla to this endemic canker pathogen. Field surveys were conducted in both anthropogenically disturbed and undisturbed C. calophylla stands, from where a total of 100 rhizosphere soil samples, from both healthy and cankered trees, were collected. Phytophthora species were isolated from 26% of the samples collected, with Phytophthora incidence significantly higher on disturbed stands than in natural forests (73% and 27%, respectively). Five Phytophthora species were recovered, including P. cinnamomi, P. elongata, P. multivora, P. pseudocryptogea and P. versiformis. Under‐bark inoculations with the Phytophthora isolates caused significant lesion lengths in excised C. calophylla stems. Corymbia calophylla response to pot infestation trials in the glasshouse varied between Phytophthora species and isolates, with isolates of P. cinnamomi and P. multivora causing a significant reduction in seedling root volume and often leading to seedling death. This study demonstrates that root disease caused by Phytophthora species, especially P. cinnamomi and P. multivora, has the ability to adversely affect C. calophylla health. This study leads the way to do a dual inoculation trial with the canker pathogen Q. coyrecup, and different Phytophthora species to investigate if Phytophthora root infection predisposes C. calophylla to this canker disease.

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“…taxon forestsoil, P . taxon riversoil, P. tubulina , P. tyrrhenica and P. vulcanica in Europe; P. arenaria , P. balyanboodja , P. boodjera , P. condilina , P. constricta , P. cooljarloo , P. gibbosa , P. gregata , P. kwongonina , P. litoralis , P. pseudorosacearum , P. thermophila and P. versiformis in Australia; P. multivora in South Africa; P. himalsilva in Nepal; and P. quercetorum and P. uniformis in North America (Aguayo et al., ; Balci et al., ; Belbahri et al., ; Brasier, Cooke, Duncan, & Hansen, ; Burgess et al., ; Jung, ; Jung & Nechwatal, ; Jung et al., , , , ; Jung, Horta Jung, Cacciola et al., ; Oh et al., ; Nechwatal et al., ; Paap et al., ; Rea et al., ; Simamora, Stukely, Hardy, & Burgess, ; Vettraino et al., ).…”

Section: Introductionmentioning

confidence: 99%

Diversity of Phytophthora species in Valdivian rainforests and association with severe dieback symptoms

Jung

Durán²,

Sanfuentes

et al. 2018

Forest Pathology

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The Valdivian rainforest, one of the global hotspots of biodiversity, is a temperate rainforest originating as a Tertiary relic from the supercontinent Gondwana. In November 2014, a survey of Phytophthora diversity was performed in 13 natural forest stands and 20 forest streams and rivers in two protected areas near Valdivia and in a temperate montane forest in the Concepción area. One planted stand each of the introduced tree species Castanea sativa and Fagus sylvatica were also included. Using baiting assays, eight described species and four previously unknown taxa of Phytophthora were isolated from 86% of the 50 rhizosphere soil samples from seven of the eight tree species sampled in 12 forest stands, and from 20 streams: P. chlamydospora, P. cinnamomi, P. kernoviae, P. lacustris, P. plurivora, P. pseudosyringae, P. ×cambivora, P. ×stagnum, P. valdiviana nom. prov. from Clade 2b, P. madida nom. prov. from Clade 8a, and P. chilensis nom. prov. and P. pseudokernoviae nom. prov. The latter two species are the closest relatives of P. kernoviae from Clade 10. Phytophthora pseudokernoviae nom. prov. was also isolated from necrotic leaves of Drimys winteri. From the Valdivia river, a swarm of three Clade 6 hybrids was recovered. Each hybrid isolate resulted from multiple reticulation events with P. thermophila as maternal and both P. amnicola and P. chlamydospora as paternal parents. In addition, three previously unknown and recently described Nothophytophthora species, N. caduca, N. chlamydospora and N. valdiviana, were isolated from several forest streams. Phytophthora cinnamomi, the most common and widespread species in soils of native forests, was associated with severe dieback of Valdivian rainforest trees, in particular D. winteri, Luma apiculata, Nothofagus dombeyi and the endangered Saxegothaea conspicua. A first pathogenicity test demonstrated high aggressiveness of P. cinnamomi to several native tree species, including N. dombeyi, Blepharocalyx cruckshanksii and Gevuina avellana.

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Phytophthora versiformis sp. nov., a new species from Australia related to P. quercina

Cited by 12 publications

References 21 publications

Multiple new cryptic pathogenic Phytophthora species from Fagaceae forests in Austria, Italy and Portugal

Multiple new cryptic pathogenic Phytophthora species from Fagaceae forests in Austria, Italy and Portugal

Field survey, isolation, identification and pathogenicity of Phytophthora species associated with a Mediterranean‐type tree species

Diversity of Phytophthora species in Valdivian rainforests and association with severe dieback symptoms

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