Possibilities of avoidance and control of bacterial plant diseases when using pathogen‐tested (certified) or ‐treated planting material

Janse, J.; Wenneker, M.

doi:10.1046/j.0032-0862.2002.00756.x

Cited by 45 publications

(37 citation statements)

References 56 publications

(63 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Assuming a random distribution of the disease, 300 trees are required to detect 1% incidence of latently infected trees with 95% probability, and 200 trees are required to detect 1.5% incidence with 95% probability (Janse and Wenneker 2002). The total number of observed affected trees within the sample would reflect the total percentage of infected trees within the population.…”

mentioning

confidence: 99%

Development of a method for detection of latent European fruit tree canker (Neonectria ditissima) infections in apple and pear nurseries

et al. 2016

View full text Add to dashboard Cite

Fruit tree canker caused by Neonectria ditissima is a serious problem in apple-producing regions with moderate temperatures and high rainfall throughout the year; especially in northwestern Europe, Chile, and New Zealand. Control measures are applied to protect primary infection sites, mainly leaf scars, from invasion by external inoculum. However, latent infections may occur when young apple trees are infected symptomlessly during propagation. This study aimed to develop a method for detection of latent fruit tree canker infections. Inoculations with conidiospore suspensions of N. ditissima were carried out in tree nurseries on the main stems of two-year-old trees of three apple cultivars and one pear cultivar. The inoculations were carried out during the natural abscission period in the autumn. No visible lesion or canker formations were present at the time when the inoculated trees were uprooted. It appeared that the infections may remain latent during the period from infection to uprooting (2 months) and during the subsequent 4 months of cold storage of the trees. Nevertheless, symptoms were generally induced within 8 weeks after transfer of infecting planting material from the nursery field into a climate chamber with high temperature and high relative humidity. The methodology presented is developed to detect latent infections of N. ditissima in nursery trees, prior to planting in the orchards, and it may contribute in reducing the problem with European fruit tree canker in commercial production.

show abstract

mentioning

confidence: 99%

Development of a method for detection of latent European fruit tree canker (Neonectria ditissima) infections in apple and pear nurseries

et al. 2016

View full text Add to dashboard Cite

show abstract

“…sepedonicus and Ralstonia solanacearum [2,3] assume that 95% probability gives good protection, whereby 0.1% infection can be detected using a completely randomised sampling frequency. In this case, sampling error is more important than test sensitivity [26], and both statistical probability and the sampling factor determine that a zero occurrence can never be completely guaranteed. Furthermore, when discussing zero infection levels in pathogenic bacteria it should be taken into account that viable, or at least culturable, bacterial populations usually decline at low temperatures [26,64], such as those in winter and in cold storage.…”

Section: Introductionmentioning

confidence: 96%

“…In this case, sampling error is more important than test sensitivity [26], and both statistical probability and the sampling factor determine that a zero occurrence can never be completely guaranteed. Furthermore, when discussing zero infection levels in pathogenic bacteria it should be taken into account that viable, or at least culturable, bacterial populations usually decline at low temperatures [26,64], such as those in winter and in cold storage. Fortunately, serological and molecular techniques can also detect non-viable and/or non-culturable bacterial cells in plant tissues and should be used in monitoring and eradication of pathogenic bacteria [9].…”

Section: Introductionmentioning

confidence: 96%

“…Consequently, preventive measures to avoid planting of contaminated material are of the highest importance in the context of an integrated approach to control. Among such measures, testing of planting material for pathogen-free status is an important, although not exclusive, method for controlling bacterial and viral diseases of plants [26,36]. As many pathogenic viruses and bacteria remain latent in the planting material, and in very low numbers, methods of high sensitivity, specificity and reliability are required.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Innovative tools for detection of plant pathogenic viruses and bacteria

et al. 2003

View full text Add to dashboard Cite

Detection of harmful viruses and bacteria in plant material, vectors or natural reservoirs is essential to ensure safe and sustainable agriculture. The techniques available have evolved significantly in the last few years to achieve rapid and reliable detection of pathogens, extraction of the target from the sample being important for optimising detection. For viruses, sample preparation has been simplified by imprinting or squashing plant material or insect vectors onto membranes. To improve the sensitivity of techniques for bacterial detection, a prior enrichment step in liquid or solid medium is advised. Serological and molecular techniques are currently the most appropriate when high numbers of samples need to be analysed. Specific monoclonal and/or recombinant antibodies are available for many plant pathogens and have contributed to the specificity of serological detection. Molecular detection can be optimised through the automatic purification of nucleic acids from pathogens by columns or robotics. New variants of PCR, such as simple or multiplex nested PCR in a single closed tube, co-operative-PCR and real-time monitoring of amplicons or quantitative PCR, allow high sensitivity in the detection of one or several pathogens in a single assay. The latest development in the analysis of nucleic acids is micro-array technology, but it requires generic DNA/RNA extraction and pre-amplification methods to increase detection sensitivity. The advances in research that will result from the sequencing of many plant pathogen genomes, especially now in the era of proteomics, represent a new source of information for the future development of sensitive and specific detection techniques for these microorganisms.

show abstract

“…A plant's identity -its genetic, phenotypic and health characteristics -is not only a matter of interest for plant breeders and growers, but also the public. Although awareness among plant producers regarding the risk of pathogen dispersal in plant material has increased in recent years, much still needs to be done (Janse and Wenneker 2002).…”

Section: Disease-free Plantsmentioning

confidence: 99%

Radio-frequency identification could help reduce the spread of plant pathogens

Luvisi¹,

Panattoni²,

Triolo³

2012

Cal Ag

View full text Add to dashboard Cite

A traceable declaration of health is now necessary for many plants, especially those being monitored for disease such as certified nursery stock. Radiofrequency identification (RFID) microchips placed in woody plants can be used to store and retrieve information on their health status through all phases of propagation and in the field. The microchip is linked to a database in which many other kinds of information, such as pesticide applications, can be collected and linked. Using a Web-based platform, information can be shared globally and accessed quickly. RFID technology can also be integrated with cell phones and netbooks for the easy recording of images and audio, which can be linked back to the chip and shared -or, with global positioning systems (GPS), used to create a virtual orchard or vineyard. There are myriad uses for this new technology, which is expanding rapidly and has been implemented successfully in the European livestock industry. Trials have shown its particular relevance to plant pathology, where it could be an important risk management tool. P roduct identification has become important in many aspects of agriculture. For health, sanitation and environmental safety (for example, to limit the spread of plant pathogens), government agencies now require many foods and agricultural products to have identifying labels or documents (FDA 2009). Identification also builds consumer trust; when labels and documents are lost or removed, as in the label fraud of wines, customer fidelity is at risk. Identification provides valuable information for implementing environmental protections and evaluating economic losses. It also helps control the spread of pests in propagated plant materials, which is central to international plant disease control strategies.The declaration of a plant's health, or a product's high quality, should be traceable during all stages of its life. The International Organization for Standardization (ISO) defined traceability, as it applies to agricultural products, as the ability to trace and follow a food, feed, food-producing animal or ingredients through all stages of production and distribution (ISO 1994 A voluntary approach to traceability could be standardized, following international standards (ISO 2005). The identification of suppliers, participants in the production line, historic data and client feedback could all be linked to the plant or product. Disease-free plantsIn the 1960s, the European Economic Community drafted regulations regarding the health status of grapevines, ornamental plants and fruit trees, establishing protocols for producing certified The spread of leafroll disease in Napa Valley vineyards ) and an epidemic of bacterial canker of kiwifruit in Italy (Ferrante and Scortichini 2010) are recent reminders of the need to limit the spread of regulated and notyet-regulated pests and viruses (Luvisi, Panattoni, Colosimo et al. 2010). With major crops at risk, the certified propagation of disease-free stock may be an appropriate area for applying new tools in plant...

show abstract

Possibilities of avoidance and control of bacterial plant diseases when using pathogen‐tested (certified) or ‐treated planting material

Cited by 45 publications

References 56 publications

Development of a method for detection of latent European fruit tree canker (Neonectria ditissima) infections in apple and pear nurseries

Development of a method for detection of latent European fruit tree canker (Neonectria ditissima) infections in apple and pear nurseries

Innovative tools for detection of plant pathogenic viruses and bacteria

Radio-frequency identification could help reduce the spread of plant pathogens

Contact Info

Product

Resources

About