Public value at risk from Phytophthora ramorum and Phytophthora kernoviae spread in England and Wales

Drake, Ben; Jones, Glyn

doi:10.1016/j.jenvman.2017.01.013

Cited by 15 publications

(6 citation statements)

References 19 publications

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“…The knowledge of Phytophthora species diversity within forests is limited (Hansen et al, 2012), although momentum is building to characterize these populations phylogenetically and to better understand their biology and impacts on forest health (Burgess et al, 2017;Scarlett et al, 2015). Tree diseases are likely to be ongoing and permanent features of the Anthropocene forest landscape as a result of human activities (Potter and Urquhart, 2017) with economic, landscape and societal impacts (Drake and Jones, 2017). For these reasons, it is essential that we understand the introduction pathways and how new pathogen populations emerge, and establish ways to mitigate the impacts of forest diseases.…”

Section: Discussionmentioning

confidence: 99%

Genome sequencing of oomycete isolates from Chile supports the New Zealand origin of Phytophthora kernoviae and makes available the first Nothophytophthora sp. genome

Studholme

Panda

Sanfuentes

et al. 2018

Molecular Plant Pathology

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Summary Genome sequences were generated for six oomycete isolates collected from forests in Valdivia, Chile. Three of the isolates were identified morphologically as Phytophthora kernoviae , whereas two were similar to other clade 10 Phytophthora species. One isolate was tentatively identified as Nothophytophthora valdiviana based on nucleotide sequence similarity in the cytochrome oxidase 1 gene. This is the first genome sequence for this recently described genus. The genome assembly was more fragmented and contained many duplicated genes when compared with the other Phytophthora sequences. Comparative analyses were performed with genomic sequences of the P. kernoviae isolates from the UK and New Zealand. Although the potential New Zealand origin of P. kernoviae has been suggested, new isolations from Chile had cast doubt on this hypothesis. We present evidence supporting P. kernoviae as having originated in New Zealand. However, investigation of the diversity of oomycete species in Chile has been limited and warrants further exploration. We demonstrate the expediency of genomic analyses in determining phylogenetic relationships between isolates within new and often scantly represented taxonomic groups, such as Phytophthora clade 10 and Nothophytophthora . Data are available on GenBank via BioProject accession number PRJNA352331.

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Section: Discussionmentioning

confidence: 99%

Genome sequencing of oomycete isolates from Chile supports the New Zealand origin of Phytophthora kernoviae and makes available the first Nothophytophthora sp. genome

Studholme

Panda

Sanfuentes

et al. 2018

Molecular Plant Pathology

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“…Our results also highlighted potential differences amongst isolates in the resistance of oospores to heat-treatment. Previous studies have established that there is variability in virulence among P. agathidicida isolates (Drake and Jones 2017). However, potential differences in oospore robustness or resistance to treatments have not yet been explored; this will be an interesting avenue for future studies.…”

Section: Discussionmentioning

confidence: 99%

A method for quantifyingPhytophthoraoospore viability using fluorescent dyes and automated image analysis

Fairhurst

Deslippe

Gerth

2021

Preprint

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Viability staining is an essential tool in many fields of microbiology. In this study, we aimed to establish a dual fluorescence method for detecting the viability of Phytophthora oospores. Phytophthora is a genus of plant pathogens in the class Oomycete that cause disease in a wide range of agriculturally and ecologically important plants. During the Phytophthora disease cycle, thick-walled oospores can be produced via sexual reproduction. These oospores are essential for long-range dispersal and long-term survival of the pathogen, and therefore methods for the study of oospores are of great interest. In this study, we tested five fluorescent dyes for their ability to stain Phytophthora agathidicida oospores: SYTO 9, FUN-1, fluorescein diacetate, propidium iodide, and TOTO-3 iodide. These dyes represented a selection of total, viable and non-viable cell stains Each dye was assessed individually, and then the best dyes were combined for dual viability staining. In this study, we have identified three dyes — SYTO 9, fluorescein diacetate and TOTO-3 — that can be used to report total, viable and non-viable oospores respectively. We further demonstrate that fluorescein diacetate and TOTO-3 can be used together for dual viability staining. This new method is quantitative and compatible with automated image analysis, allowing oospores to be rapidly and accurately assessed for viability.

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“…Regarding the effects of climate change on the development of particular phytosanitary problems, the trend of temperature increase, both in summer an in winter, combined with wetter winters and drier summers, is likely to enhance the severity of pest and pathogen attacks on plants by i) extending parasite reproductive stages (Bisgrove and Hadley, 2002;Lupton et al, 2010;Garrett et al, 2014) ii) favouring the spread of phytosanitary problems related to agents coming from warmer climates (Lupton et al, 2010) iii) predisposing plants to infection due to the stresses associated with global change-induced disturbances. This is the case of the generalist pathogen Phytophthora sp., especially of its invasive species Phytophthora ramorum Werres, De Cock & Man in 't Vel, P. lateralis Tucker & Milbrath, and P. kernoviae Brasier, Beales & S.A. Kirk, associated with warmer and wetter winters, and recognised as major threats for historic gardens (Walters et al, 2010;Martin, 2015;Drake and Jones, 2017).…”

Section: Pathogens and Pestsmentioning

confidence: 99%

The management of plants and their impact on monuments in historic gardens: Current threats and solutions

Carrari

Aglietti

Bellandi³

et al. 2022

Urban Forestry & Urban Greening

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Public value at risk from Phytophthora ramorum and Phytophthora kernoviae spread in England and Wales

Cited by 15 publications

References 19 publications

Genome sequencing of oomycete isolates from Chile supports the New Zealand origin of Phytophthora kernoviae and makes available the first Nothophytophthora sp. genome

Genome sequencing of oomycete isolates from Chile supports the New Zealand origin of Phytophthora kernoviae and makes available the first Nothophytophthora sp. genome

A method for quantifyingPhytophthoraoospore viability using fluorescent dyes and automated image analysis

The management of plants and their impact on monuments in historic gardens: Current threats and solutions

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