Pathways of entry and spread of rust pathogens implications for New Zealands biosecurity

Viljanen-Rollinson, S.L.H.; Cromey, M. G.

doi:10.30843/nzpp.2002.55.3911

Cited by 14 publications

(12 citation statements)

References 14 publications

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“…Detections of plant pest incursions usually occur when least anticipated, are often the result of a completely unexpected pest entering an area despite the use of risk reduction measures, and in the case of plant pathogens are frequently the result of airborne fungal spores arriving by natural means. For example, incursions by rust pathogens have been well documented (Viljanen‐Rollinson & Cromey, 2002; Mackenzie, 2007; Carnegie et al. , 2010).…”

Section: Introductionmentioning

confidence: 99%

Spore traps need improvement to fulfil plant biosecurity requirements

Jackson

Bayliss

2011

Plant Pathology

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Spore traps are widely used in plant pathology, but less so in plant biosecurity. Potentially they can be used to determine the geographical extent of a plant pathogen incursion, to track the active spread of an incursion, and to declare area freedom following an eradication program. This review discusses the abilities and constraints of spore traps in the context of plant biosecurity, and highlights the problems that need to be overcome before spore traps can be routinely used for detection and eradication of plant pathogen incursions. To meet biosecurity requirements, spore traps must be efficient, mechanically reliable and any spores captured must be rapidly identified and quantified. At present, there is significant variation in types of spore traps, and in the methods used to capture and identify spores. Standard spore traps are generally inefficient for surveillance because they do not sample large volumes of air or capture samples that are representative of entire crop growing regions. If spore traps are to become routinely used for plant biosecurity purposes, improved designs, novel applications and standard operating protocols must be developed. A better understanding of background atmospheric data and the spatial and temporal characteristics of pathogen spores will be required to design trapping systems and protocols so that incursions can be readily detected, and presence ⁄ absence data can be confidently reported.

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Section: Introductionmentioning

confidence: 99%

Spore traps need improvement to fulfil plant biosecurity requirements

Jackson

Bayliss

2011

Plant Pathology

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“…Pathogen species released as biocontrol agents (B) in the region are also included. † P. violaceum was released as a biocontrol agent in Australia and dispersed from there to New Zealand(Viljanen-Rollinson & Cromey, 2002).…”

mentioning

confidence: 99%

Taxonomic similarity, more than contact opportunity, explains novel plant–pathogen associations between native and alien taxa

et al. 2016

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Novel associations between plants and pathogens can have serious impacts on managed and natural ecosystems world-wide. The introduction of alien plants increases the potential for biogeographically novel plant-pathogen associations to arise when pathogens are transmitted from native to alien plant species and vice versa. We quantified biogeographically novel associations recorded in New Zealand over the last 150 yr between plant pathogens (fungi, oomycetes and plasmodiophorids) and vascular plants. We examined the extent to which taxonomic similarity, pathogen traits, contact opportunity and sampling effort could explain the number of novel associates for host and pathogen species. Novel associations were common; approximately one-third of surveyed plants and pathogens were recorded with at least one biogeographically novel associate. Native plants had more alien pathogens than vice versa. Taxonomic similarity between the native and alien flora and the total number of recorded associations (a measure of sampling effort) best explained the number of novel associates among species. The frequency of novel associations and the importance of sampling effort as an explanatory variable emphasize the need for effective monitoring and risk assessment tools to mitigate the potential environmental and economic impact of novel pathogen associations.

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“…Rust spores are easily carried on clothing and this pathway is a very likely source of accidental introduction to new areas. Additionally, a range of fungal rusts are thought to have arrived in New Zealand from Australia through prevailing westerly wind currents (Kim & Beresford 2008;Viljanen-Rollinson & Cromey 2002). Therefore all New Zealand myrtaceous genera and species are expected to be at risk because the Australian biotype has a particularly wide host range (see above).…”

Section: Potential Impacts Of Myrtle Rust On Taonga Speciesmentioning

confidence: 99%

The threat of myrtle rust to M257;ori taonga plant species in New Zealand

Teulon

Alipia²,

Ropata³

et al. 2015

NZPP

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Myrtle rust, caused by the pathogen Puccinia psidii, is a disease of plants in the Myrtaceae that is currently not known to be present in New Zealand. Its origin is Central/ South America, but it has steadily spread around the world and is now found in Australia. All New Zealand Myrtaceae species, including indigenous species, are at risk from myrtle rust infection, but the extent of the impact on plant health is not known. While the potential economic and environmental impacts of myrtle rust establishment in New Zealand have been well documented, this paper explores potential socio-cultural consequences for Māori. All indigenous Myrtaceae species can be considered as taonga (or treasure) by Māori, who have and continue to use the properties of some species in many ways (both tangible and intangible). Preparedness and response plans for a myrtle rust incursion in New Zealand should consider the values that Māori derive from these plants.

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Pathways of entry and spread of rust pathogens implications for New Zealands biosecurity

Abstract: The long distance dispersal of many plant pathogens has been well documented.

Cited by 14 publications

References 14 publications

Spore traps need improvement to fulfil plant biosecurity requirements

Spore traps need improvement to fulfil plant biosecurity requirements

Taxonomic similarity, more than contact opportunity, explains novel plant–pathogen associations between native and alien taxa

The threat of myrtle rust to M257;ori taonga plant species in New Zealand

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