Phytophthora kernoviae sp. nov., an invasive pathogen causing bleeding stem lesions on forest trees and foliar necrosis of ornamentals in the UK

Brasier, C. M.; Beales, Paul; Kirk, Susan; Denman, Sandra; Rose, Joan

doi:10.1017/s0953756205003357

Cited by 191 publications

(230 citation statements)

References 16 publications

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“…This is for example the case of P. ramorum, P. kernoviae, P. cactorum, P. infestans and P. capsici, which typically produce caducous sporangia, as Fig. 3 Mean monthly rainfall in 2009, 2010 and 2011 (bars) and the average number of sporangia on resinous bands (RB), (solid line) the main propagules for dissemination (Erwin and Ribeiro 1996;Hansen et al 2003;Brasier et al 2005;Rizzo et al 2005). Results also showed that sporangia are produced prolifically from the stomata of infected needles and specifically from the areas where the typical resinous bands are present.…”

Section: Discussionmentioning

confidence: 99%

Pathogenicity and sporulation of Phytophthora pinifolia on Pinus radiata in Chile

Ahumada

Rotella

Slippers

et al. 2013

Australasian Plant Pathol.

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Phytophthora pinifolia causes the needle and shoot disease of Pinus radiata known as Daño Foliar del Pino (DFP) in Chile. The first pathogenicity trials with this organism utilized mycelial plugs placed on stem wounds. These resulted in lesions in the tissue, but did not reproduce the resinous bands on the needles, which are the most characteristics symptoms of the disease under natural conditions. In this study, stem inoculations were repeated, but to complete Koch's postulates fully, and to confirm that P. pinifolia causes the symptoms observed on naturally infected trees, zoospore/sporangial suspensions were used to inoculate pine foliage. This method produced the same symptoms observed on needles infected naturally. These results confirm that P. pinifolia is the causal agent of the Daño Foliar del Pino on P. radiata in Chile and successfully completed Koch's postulates for the first time. Pathogenicity tests on different Pinus spp. and hybrids showed a wide range of responses to inoculation with P. pinifolia mycelial plugs, from highly susceptible to resistant. Monitoring of sporulation revealed that the sporangia commonly remain on the needles for extended periods of time and their frequency of occurrence and dispersal appear to increase during the rainy season.

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Section: Discussionmentioning

confidence: 99%

Pathogenicity and sporulation of Phytophthora pinifolia on Pinus radiata in Chile

Ahumada

Rotella

Slippers

et al. 2013

Australasian Plant Pathol.

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“…has been detected [68]. Other recent challenges to UK biosecurity have included the introduction of P. ramorum and Phytophthora kernoviae [59,69], infecting a wide range of ornamental and wild plant species [70]. To help cope with such threats, policies have been developed at international, national and regional levels.…”

Section: Hindsight and The Future Of Regulatory Engagementmentioning

confidence: 99%

Integrating natural and social science perspectives on plant disease risk, management and policy formulation

Mills

Dehnen‐Schmutz

Ilbery

et al. 2011

Phil. Trans. R. Soc. B

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Plant diseases threaten both food security and the botanical diversity of natural ecosystems. Substantial research effort is focused on pathogen detection and control, with detailed risk management available for many plant diseases. Risk can be assessed using analytical techniques that account for disease pressure both spatially and temporally. We suggest that such technical assessments of disease risk may not provide an adequate guide to the strategies undertaken by growers and government to manage plant disease. Instead, risk-management strategies need to account more fully for intuitive and normative responses that act to balance conflicting interests between stakeholder organizations concerned with plant diseases within the managed and natural environments. Modes of effective engagement between policy makers and stakeholders are explored in the paper, together with an assessment of such engagement in two case studies of contemporary non-indigenous diseases in one food and in one non-food sector. Finally, a model is proposed for greater integration of stakeholders in policy decisions.

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“…Except for P. boehmeriae, all these species were described after 2005. Most of these species pose threats to agricultural production and natural plantations (Brasier et al, 2005;Erwin & Ribeiro, 1996;Jung & Nechwatal, 2008;Nelson & Abad, 2010). P. kernoviae is an invasive pathogen to many forest and ornamental plants in the UK and presents a significant threat to global biosecurity (Brasier et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Most of these species pose threats to agricultural production and natural plantations (Brasier et al, 2005;Erwin & Ribeiro, 1996;Jung & Nechwatal, 2008;Nelson & Abad, 2010). P. kernoviae is an invasive pathogen to many forest and ornamental plants in the UK and presents a significant threat to global biosecurity (Brasier et al, 2005). P. boehmeriae causes a variety of diseases on a number of host plants such as brown rot of citrus fruits (Erwin & Ribeiro, 1996), foliar blight of hot pepper (Capsicum annuum) (Chowdappa et al, 2014) and boll rot of cotton (Gossypium sp.)…”

Section: Introductionmentioning

confidence: 99%

A unique species in Phytophthora clade 10, Phytophthora intercalaris sp. nov., recovered from stream and irrigation water in the eastern USA

Yang

Balcì

Brazee

et al. 2016

International Journal of Systematic and Evolutionary Microbiology

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Phytophthora kernoviae sp. nov., an invasive pathogen causing bleeding stem lesions on forest trees and foliar necrosis of ornamentals in the UK

Cited by 191 publications

References 16 publications

Pathogenicity and sporulation of Phytophthora pinifolia on Pinus radiata in Chile

Pathogenicity and sporulation of Phytophthora pinifolia on Pinus radiata in Chile

Integrating natural and social science perspectives on plant disease risk, management and policy formulation

A unique species in Phytophthora clade 10, Phytophthora intercalaris sp. nov., recovered from stream and irrigation water in the eastern USA

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