Developing integrated approaches for pest and disease control in horticultural field crops (IAPAD)

Lead Research Organisation: University of Warwick
Department Name: School of Life Sciences

Abstract

Turnip yellows virus (TuYV) is a very important pathogen of vegetable brassicas (Latin name Brassica oleracea; cabbage, cauliflower, Brussels sprout, broccoli etc.) and oilseed rape (OSR) in the UK & Europe. Many crops sampled have had very high levels of TuYV infection. Unlike many viruses, TuYV does not cause very obvious symptoms in most brassicas (storage cabbage where it causes tipburn is the exception). This has meant many growers are unaware of the infections. Despite lack of obvious symptoms we showed that TuYV reduces the yield of cabbage by upto 36% and Brussels sprouts by upto 65%. Estimates of OSR yield reductions in the UK alone are upto 30% (losses of GBP 67-180 million/annum). TuYV can move between vegetable brassicas, oilseed rape and weeds, resulting in the high levels of infection of crops seen.

A very common greenfly (peach-potato aphid) transmits TuYV; once they acquire the virus they transmit for life.

In glasshouse experiments we have identified the best insecticide seed treatments and sprays for controlling TuYV. We have also shown in the field that different cabbage and Brussels sprout cultivars have different susceptibilities to TuYV (all are susceptible, but some less so than others) and that the earlier plants are infected, the greater the yield loss. We have also found a number of sources of extreme resistance to TuYV in Brassica oleracea and have been studying the diversity of TuYV by determining the genetic code of many isolates. Collaborators in the project have a network of suction traps around the UK that trap flying greenfly. They identify the different greenfly species including the peach potato aphid and count them. They are also developing a molecular technique to detect TuYV in the greenfly.

All these discoveries provide the opportunity to combine them in to an integrated programme that will give optimal control of TuYV. To develop this integrated control programme we intend to do field experiments in two regions of the UK. At one location we will introduce greenfly carrying TuYV to provide high infection pressure and at the other location we will rely on natural infection. In these experiments we will apply the individual components (partial plant resistance, the best seed treatment and the best sprays) separately, in pairs and in threes in order to quantify the efficacy of individual and combined treatments. This will identify the best combinations and quantify synergy between treatments.

The timing of spray treatments will be informed by when peach-potato aphids are flying, this will be known from the suction trap and water trap catches around the experiment.

To build on and improve the integrated programme we will identify the best source of extreme resistance to TuYV in our resistant B. oleracea lines. This will be crossed with a susceptible line. The offspring will be tested for resistance/susceptibility by challenging plants with TuYV and testing for TuYV using a quantitative test called ELISA. Some of the next generation of plants will be susceptible to TuYV and some will be resistant. By analysing the genes/chromosomes/RNA/DNA of these plants and comparing this with the susceptibility/resistance status of the plants, it will allow the development of molecular markers. Seed companies will use these to significantly speed up the incorporation of the resistance genes into commercially acceptable varieties.

We are collaborating with Syngenta and Dow in the optimal use of seed treatments and sprays and with the seed companies Tozer, Sakata UK, Enza Zaden and Rijk Zwaan UK on the TuYV resistance exploitation. We are also working with Allium and Brassica Agronomy who work with farmers. Through these collaborations the outcomes of the research (integrated programme for TuYV control and new sources of resistance to TuYV) will be exploited by growers in order to reduce residues in vegetables and inputs and increase yields, thereby contributing to food security.

Technical Summary

Turnip yellows virus (TuYV) is a very important pathogen of vegetable brassicas (Brassica oleracea) and oilseed rape (OSR) in UK & Europe. Very high levels of infection have been detected in many crops. It reduces the yield of cabbage by upto 36% and Brussels sprouts by upto 65%. Estimates of OSR yield reduction in the UK are upto 30% (GBP 67-180 million/yr). The very common aphid Myzus persicae transmits TuYV.

The best insecticide seed treatments and sprays for TuYV control have been identified. Different cabbage and Brussels sprout cultivars have different susceptibilities to TuYV (all are susceptible, but some less so than others) and the earlier plants are infected, the greater the yield loss. A number of sources of extreme resistance have been found in B. oleracea and TuYV genetic diversity determined. Rothamsted Insect Survey has a network of suction traps around the UK trapping aphids including M. persicae which are identified and counted. They are also developing a molecular test to detect TuYV in the aphids.

These discoveries provide the opportunity to develop an integrated programme for optimal TuYV control. To develop the programme we intend to do field experiments in 2 regions of the UK. In the experiments we will apply the individual components (partial plant resistance, the best seed treatment and the best sprays) separately, in pairs and threes to quantify their efficacy. This will identify the best combinations and quantify synergy between treatments. The timing of spray treatments will be informed by suction and water trap catches.

To improve the integrated programme the best source of extreme resistance to TuYV will be crossed with a susceptible line. F1s will be tested for resistance/susceptibility to TuYV. A segregating BC1 population will be developed to map the resistance genes.

The project includes 2 research organisations, 2 agrochemical companies, 4 seed companies and an extension company facilitating extensive exploitation.

Planned Impact

A broad range of stakeholders will benefit from the research - consumers, processors, growers, seed companies and agrochemical companies. The nation's health and wealth will also benefit.

Consumers will benefit from the reduced virus infection of brassica vegetables the project will deliver. Less virus infection will mean increased quality of brassicas, better security of supply and lower prices. More precise and less spraying that the integrated programme will facilitate will result in reduced insecticide residues in brassicas.

The processing industry will benefit through security of supply. Processors producing coleslaw from stored cabbage have turned away tonnes of cabbage due to tipburn caused by TuYV. Reducing TuYV in cabbage will reduce the amount of tipburn developing during storage, resulting in less waste and processors not having to buy cabbage from abroad at inflated prices. This will also result in less waste form the energy used to maintain stored cabbage at just above 0C for upto 8 months of the year.

Growers will benefit from having more options to control TuYV in the field. Having a decision support mechanism on when to use treated seed and the timing of sprays will take a lot of guesswork out of aphid and virus control resulting in much more effective insecticide use. This will reduce inputs, costs and residues and give better aphid and virus control, which in turn will increase profitability and security of supply. In the longer term having TuYV-resistant brassica varieties will help growers even more and reduce their reliance on insecticides, reducing costs and residues further.

Seed companies involved in the project will benefit from having a source of TuYV resistance they can introgress in to their commercial brassica varieties. The molecular markers developed in the research project will dramatically speed up the introgression for the seed companies. Being able to market TuYV-resistant brassica varieties should increase market share and improve the competitiveness of the seed companies and hence profitability.

The agrochemical companies involved will benefit from hard data on the effectiveness of their products in controlling aphids and TuYV in brassica field crops. Information on the best combinations of treatments and treatment timing based on a decision support mechanism will allow them to give better instructions and guidance to growers on the most effective way to use their products. This will improve their relationship with growers and result in more effective use of their products.

Brassicas are a nutrient-dense food containing a broad range of beneficial compounds especially protective against cancer and heart disease. Deployment of the integrated control strategy resulting in reduced virus infection, reduced pesticide residues, better quality vegetables and security of supply will be beneficial to the nation's health.

Warwick has a track record of engaging beneficiaries, promoting impact/delivery and exploiting advice and plant material. They are currently working with vegetable breeders to introgress the broad-spectrum resistance to TuMV in to commercial varieties. Together, they have developed a precise allele-specific marker for the gene retr01. Delivery of the resistance was further supported by a BBSRC CASE PhD studentship with the company. Rothamsted has a long history of providing and disseminating information on aphid abundance, flight times and insecticide resistance. The project outcomes will allow more growers to use the current information and provide new information on TuYV prevalence in flying aphids, which will be even more beneficial for growers.

The benefits of sustainable food production will be communicated to wider audiences through engagement activities, including professional bodies (CIKTN & Bioscience KTN, UK Dept for Business, Innovation & Skills [BIS], Forum for the Future, VeGin) and the schools outreach we are already engaged in.

Publications

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Michelmore R (2017) Foundational and Translational Research Opportunities to Improve Plant Health. in Molecular plant-microbe interactions : MPMI

 
Description We have determined the numbers of plant virus vectors (aphids) flying in two regions of England and the proportion of these carrying a serious virus that infects plants and reduces their yield and quality over a three year period. We have released this information regularly on two publicly available websites. We have determined the effect of a number of treatments in reducing the spread of the virus to crop plants and improving crop yields and quality over a three year period. We have identified plant lines with extreme resistance to the virus and have been determining the position of the gene(s) responsible for the extreme resistance in the genome of the plants. Crosses have been made between virus-resistant and virus-susceptible plants to produce F1 plants. F1 plants were backcrossed to the susceptible parent to produce a population segregating for resistance to the virus. Two hundred BC1 plants were tested to determine which ones were susceptible and which ones were resistant to the virus. Of these plants, 94 were analysed (genotyped) and a very significant region (QTL) of one of the plant's chromosomes was identified as associated with the virus resistance. Another region of a different chromosome was also significantly associated with the resistance. There was an additive effect between the two regions on the different chromosomes. A virus-resistant BC1 plant was crossed to the susceptible parent to produce a further population (BC2) segregating for resistance. The BC2 population was phenotyped and genotyped to narrow down the region of the plant's chromosomes associated with the resistance, this confirmed the major, very significant QTL identified in the BC1 population. The QTLs from the BC1 and BC2 overlap by 0.8 Mb comprising ~70 genes, one of more of which is responsible for the plant resistance to Turnip yellow virus.

The aim is to use the regions of the plant's chromosomes associated with the resistance to design molecular markers that plant breeders collaborating in the project can use to develop virus-resistant crops.
Exploitation Route When the project is completed we will be passing resistant plant varieties on to seed companies / plant breeders who will incorporate the resistance in to commercial plant varieties. This will significantly reduce the necessity to spray the crops with insecticides, thereby reducing pesticide residues in food. Molecular markers we are developing for the resistance will dramatically speed up the deployment of the resistance by plant breeders. Other results from our research will be used by farmers to minimize pesticide inputs in their farming practices. We have four seed companies / plant breeders helping to fund and collaborating in the project.
Sectors Agriculture, Food and Drink,Manufacturing, including Industrial Biotechology,Retail

URL http://www.cpm-magazine.co.uk/wp-content/uploads/2017/08/CPM-August-2017.pdf
 
Description Providing information in real time, online, on plant virus vectors and their status in terms of whether they were carrying virus on a weekly basis has allowed growers to take decisions on whether to apply treatments for aphid and virus control.
First Year Of Impact 2015
Sector Agriculture, Food and Drink
Impact Types Economic

 
Description I was invited to and participated in the UK-US Plant Health Workshop organised by BBSRC, USDA, UK Science & Innovation Network, Research Councils UK United States and the US National Institute of Food and Agriculture in the British Embassy on 19-21 September, 2016. The workshop produced a white paper 'Foundational and Translational Research Opportunities to Improve Plant Health', Molecular Plant-Microbe Interactions 30 (7).
Geographic Reach North America 
Policy Influence Type Membership of a guideline committee
URL https://apsjournals.apsnet.org/doi/pdf/10.1094/MPMI-01-17-0010-CR
 
Description Invited to and participated in the Industrial Strategy Challenge Fund Workshop - Agricultural Productivity held in Solihull on 15 August, 2017 attended by industry representatives, BBSRC, NERC, academics, levy boards etc.
Geographic Reach National 
Policy Influence Type Membership of a guideline committee
 
Description BBSRC Agri-food Technology Seeding Catalyst award internal funding
Amount £7,036 (GBP)
Funding ID BB/SCA/Warwick/17 
Organisation University of Warwick 
Sector Academic/University
Country United Kingdom
Start 01/2018 
End 02/2018
 
Description Warwick Impact Fund
Amount £45,643 (GBP)
Funding ID 15LFHF02 
Organisation University of Warwick 
Sector Academic/University
Country United Kingdom
Start 08/2017 
End 07/2019
 
Description HAPI collaboration 
Organisation Agricultural and Horticulture Development Board
Country United Kingdom 
Sector Charity/Non Profit 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Allium & Brassica Agronomy
Country United Kingdom 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Dow AgroSiences
Country United Kingdom 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Enza Zaden
Country United Kingdom 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Rijk Zwaan B.V.
Country Netherlands 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Rothamsted Research
Country United Kingdom 
Sector Academic/University 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Sakata Seed
Country Global 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Syngenta International AG
Department Syngenta Crop Protection
Country United Kingdom 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description HAPI collaboration 
Organisation Tozer Seeds
Country United Kingdom 
Sector Private 
PI Contribution Research undertaken We are delivering research outcomes
Collaborator Contribution Financial, agrochemicals, research inputs and advice
Impact AHDB Horticulture article for brassica growers on the research project. Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins: http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/ http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Start Year 2015
 
Description Article 'Integrated approaches for pest and disease control in horticultural field crops' in AHDB Brassica Research News, November 2015 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact An article 'Integrated approaches for pest and disease control in horticultural field crops' describing early progress in our BBSRC -funded research project was published in AHDB Brassica Research News, November 2015
Year(s) Of Engagement Activity 2015
URL http://us5.campaign-archive2.com/?u=dda63e69f267482a4d344eb86&id=cbdb451a25&e=%5bUNIQID%5d
 
Description Article in Cropproduction cpm magazine 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact Our research on TuYV was featured in an article in Cropproduction cpm magazine, August 2017, pages 32-33.
Year(s) Of Engagement Activity 2017
URL http://www.cpm-magazine.co.uk/wp-content/uploads/2017/08/CPM-August-2017.pdf
 
Description Fascination of Plants Day 
Form Of Engagement Activity Participation in an open day or visit at my research institution
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Public/other audiences
Results and Impact We had an exhibit at the Fascination of Plants Day on May 18th 2017 at our campus.
Year(s) Of Engagement Activity 2017
URL https://warwick.ac.uk/study/outreach/news/celebrating_fascination_of/
 
Description Horticulture and Potato Initiative (HAPI) Dissemination Event 2016. 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact A dissemination event for HAPI projects with researchers and industrial collaborators.
Year(s) Of Engagement Activity 2016
URL http://www.hip.org.uk/hip-activity/current/horticulture-and-potato-initiative-update
 
Description Horticulture and Potato Initiative (HAPI) Event 2017 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact HAPI dissemination event with researchers and industry collaborators
Year(s) Of Engagement Activity 2017
URL http://www.hip.org.uk/news-events/event/hapi-event/
 
Description Innovate UK Industrial Strategy Challenge Fund Workshop - Agricultural Productivity 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact I participated in Innovate UK's Industrial Strategy Challenge Fund Workshop - Agricultural Productivity at the Ardlen Hotel, Solihul on 15 August, 2017.
Year(s) Of Engagement Activity 2017
 
Description International Advances in Plant Virology copnference (London) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact A talk by postdoc Diana Katschnig, at this international conference focussed on advances in virus research at which I was a member of the organising committee.
Year(s) Of Engagement Activity 2016
URL http://www.aab.org.uk/images/virology_2016_ann_pbf.pdf
 
Description International Plant Virus Epidemiology Symposium presentation 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Supporters
Results and Impact Oral presentation at international Plant Virus Epidemiology Symposium, Coex, Seoul, South Korea, 13-17th May, 2019.
Year(s) Of Engagement Activity 2019
URL http://www.ipve2019.com/?ckattempt=1
 
Description Oral presentation and poster presentation at UKRI, BBSRC Horticulture and Potato Initiative Dissemination Event. 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact Oral presentation and poster presentation by Dr Dieter Hackenberg,at UKRI, BBSRC Horticulture and Potato Initiative Dissemination Event, 10-11 December, 2019, Leeds, UK..
Year(s) Of Engagement Activity 2019
URL https://bbsrc.ukri.org/innovation/collaboration/collaborative-programmes/hapi/
 
Description Plant Quantitative Genetics meeting, from Theory into Practice 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact Dr Dieter Hackenberg presented a poster at the Plant Quantitative Genetics meeting, from Theory into Practice, organised by the Genetics Society, at Edgbaston Park Hotel, University of Birmingham, 7th November, 2019.

Abstract at https://drive.google.com/file/d/1ThbfkPOz3aWq2r9PZT4qQZTWwwFGxb_S/view
Year(s) Of Engagement Activity 2019
URL https://genetics.org.uk/events/plant-quantitative-genetics-from-theory-into-practice/
 
Description Poster Presentation, International Advances in Plant Virology, Rome, Italy. 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Public/other audiences
Results and Impact Poster Presentation by Dr. Dieter Hackenberg, International Advances in Plant Virology, 29-31st October, 2019, Rome, Italy.
Year(s) Of Engagement Activity 2019
URL https://www.audiencify.com/conference/international-advances-plant-virology-2019
 
Description Talk at International Advances in Plant Virology meeting, Rome, Italy. 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Oral presentation at International Advances in Plant Virology meeting, 29-31 October, 2019, Rome, Italy. Co-author of two other presentations.
Year(s) Of Engagement Activity 2019
URL https://www.audiencify.com/conference/international-advances-plant-virology-2019
 
Description UK-US Plant Health Workshop to discuss plant health and develop a white paper 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact the UK-US Plant Health Workshop held in the British Embassy, Washington DC was held to discuss biotic challenges to plant health and develop a white paper for future directions of research.
Year(s) Of Engagement Activity 2016
URL https://apsjournals.apsnet.org/doi/full/10.1094/MPMI-01-17-0010-CR
 
Description UK-US Plant Health Workshop, British Embassy, Washington DC 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact A UK-US workshop to:
- facilitate new collaborations and build on existing links
- increase community knowledge for international research collaborations
- inform future funding priorities
Year(s) Of Engagement Activity 2016
 
Description University visit (Saga University, Japan) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Undergraduate students
Results and Impact Visit to Saga University, Japan, 18-24th May, 2019. Lecture to undergraduate and post-graduate students and discussions with postgraduate (MSc and PhD) students.
Year(s) Of Engagement Activity 2019
 
Description Weekly grower information 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact AHDB Horticulture article for brassica growers on the research project.
Results from our monitoring the aphid vector of Turnip yellows virus (TuYV), Myzus persicae (peach-potato aphid) and the numbers of these aphids carrying TuYV have been reported in weekly in on-line bulletins:
http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/
http://www3.syngenta.com/country/uk/SiteCollectionDocuments/Agronomy%20Tools/HDC/Updates%202015/Brassica%20aphid%20template%203%20Nov%202015.pdf
Year(s) Of Engagement Activity 2015
URL http://blogs.warwick.ac.uk/rosemarycollier/entry/aphid_and_turnip_1_2_3_4_5_6_7_8_9_730/