16AGRITECHCAT5: Integrating Control strategies Against soil-borne Rhizoctonia solani in OilSeed rape (ICAROS)

Lead Research Organisation: University of Nottingham
Department Name: Sch of Biosciences

Abstract

Increased oilseed rape (Brassica napus, OSR) cropping frequency and incidence of soil-borne diseases have been recently identified as major threats and contributory causes to the current 'yield plateau' in UK OSR crops. Rhizoctonia solani, anastomosis group (AG) 2-1 is strongly associated with the presence of its main host, OSR, and the pathogen is implicated in the yield decline of the crop grown with increased frequency in the rotation. Severe damping off disease caused by AG2-1 has been shown to significantly impact on several root system architecture traits of OSR. The epidemiology and control of AG2-1 and Rhizoctonia diseases in UK OSR crops have not previously been investigated.
The aim of this project is to develop new integrative strategies for disease control through work packages designed to i) identify resistance/tolerance traits and novel resistance loci which can be utilised in crop breeding; ii) elucidate disease epidemiology in relation to soil environment and host; iii) quantify yield losses due to damping off diseases caused by R. solani and iv) develop methods for control using varietal resistance and seed treatment for improved disease management and yield of OSR. This project will develop a high-throughput disease screen for phenotyping a range of Brassica napus lines, including conventional varieties, hybrids, diversity sets and mapping populations to identify novel loci for resistance against R. solani. Future strategies for effective disease management will be established through multidisciplinary studies integrating disease modelling, computed tomography and molecular biology to determine the epidemiology of R. solani in relation to its host and the environment, quantify yield losses and determine responses to seed treatment for Rhizoctonia disease. A major output at completion will be integrated guidelines incorporating novel seed treatments and varietal resistance/tolerance for improved disease management and protection of OSR yield.

Technical Summary

Increased oilseed rape (Brassica napus, OSR) cropping frequency and incidence of soil-borne diseases have been recently identified as major threats and contributory causes to the current 'yield plateau' in UK OSR crops. Rhizoctonia solani, anastomosis group (AG) 2-1 is strongly associated with the presence of its main host, OSR, and the pathogen is implicated in the yield decline of the crop grown with increased frequency in the rotation. Severe damping off disease caused by AG2-1 has been shown to significantly impact on several root system architecture traits of OSR. The epidemiology and control of AG2-1 and Rhizoctonia diseases in UK OSR crops have not previously been investigated.
The aim of this project is to develop new integrative strategies for disease control through work packages designed to i) identify resistance/tolerance traits and novel resistance loci which can be utilised in crop breeding; ii) elucidate disease epidemiology in relation to soil environment and host; iii) quantify yield losses due to damping off diseases caused by R. solani and iv) develop methods for control using varietal resistance and seed treatment for improved disease management and yield of OSR. This project will develop a high-throughput disease screen for phenotyping a range of Brassica napus lines, including conventional varieties, hybrids, diversity sets and mapping populations to identify novel loci for resistance against R. solani. Future strategies for effective disease management will be established through multidisciplinary studies integrating disease modelling, computed tomography and molecular biology to determine the epidemiology of R. solani in relation to its host and the environment, quantify yield losses and determine responses to seed treatment for Rhizoctonia disease. A major output at completion will be integrated guidelines incorporating novel seed treatments and varietal resistance/tolerance for improved disease management and protection of OSR yield.

Planned Impact

Control of Rhizoctonia diseases in oilseed rape (OSR) is currently only possible through the exclusive use of fungicides, which increases input costs and is unsustainable crop management practice in the long term. Furthermore, there are currently no seed treatments registered against Rhizoctonia diseases in UK OSR, highlighting the lack of information on yield loss and contribution of the disease to current establishment losses estimated at £30M in the worst years. The ultimate economic impact of the project will be the recovery of loss in establishment failure or yield due the disease through improved control strategies thus stabilising farming incomes. The ultimate impact is envisaged as increased competitiveness of UK OSR industry through acceleration of novel trait discovery such as disease resistance/tolerance to R. solani realised through commercial crop breeding and benefiting UK OSR production. The identification of novel resistance or tolerance traits and genes in OSR against R. solani, AG 2-1 will allow integration with more targeted crop protection approaches such as low dose seed treatment.
Expected environmental impact of this project is to rationalise the use, effectiveness and response to seed treatments in OSR varieties against damping off disease caused by R. solani and avoid the use of unnecessary or ineffective fungicide treatment where varietal resistance/tolerance can be deployed. Protecting the root system of OSR during establishment should result in lower greenhouse gas emissions and minimise nitrate leaching through more effective nutrient and water uptake by the crop and improved yield.
Improved yield protection in OSR will be crucial to meet production demand whilst minimising pressure for land use change and maintaining food security. Achieving effective control of soil-borne disease such as Rhzoctonia on currently utilised land for crop production will allow land use diversification thus increasing overall biodiversity.

Publications

10 25 50
 
Description Effectiveness of seed treatments against soil-borne pathogens
Amount £13,152 (GBP)
Funding ID 310004 
Organisation Syngenta International AG 
Sector Public
Country Global
Start 12/2017 
End 12/2018
 
Description Pathogen complexes with Rhizoctonia solani in EU soils
Amount £19,200 (GBP)
Funding ID 1216253 
Organisation Syngenta International AG 
Sector Public
Country Global
Start 10/2018 
End 10/2019
 
Description Soil borne pathogen detection and quantification to aid decision making for treatment
Amount £25,000 (GBP)
Organisation Syngenta International AG 
Department Syngenta Crop Protection
Sector Private
Country United Kingdom
Start 01/2017 
End 12/2018
 
Description AHDB agronomy conference -4&5 December 2018 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact Workshop on soil health run by Rumiana Ray for both days of the conference for 100 agronomist delegates at conference by AHDB.
Year(s) Of Engagement Activity 2018
URL https://cereals.ahdb.org.uk/crop-management/technical-events/agronomists-conference.aspx
 
Description CIS Root Health Forum 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact More than 100 industry members and stakeholders were hosted by Syngenta to discuss root health concerns due to soil-borne pathogens in Russia and Ukraine. Experts were invited for panel discussions and presentations on the topic.
Year(s) Of Engagement Activity 2016
URL https://roothealth.com/forums/2016-minsk-cis/
 
Description Cereals June 2018 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact More than 50 visitors at the Cereals event in 2018 gathered at the Syngenta stand where the ICAROS project was presented using interactive videos and talks. The visitors during the both days of the event reported increased interest in the project activities and outputs including change of perception of the effects of soil-borne disease in OSR crops and new insights on how to protect crop establishment and yield.
Year(s) Of Engagement Activity 2018
URL https://cereals.ahdb.org.uk/rhizoctonia
 
Description Combating damping off at OSR establishment- Technical research in action - September 2018 
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 Publication on research outputs from ICAROS with main messages for industry including farmers and advisers/agronomists in Farmers Guardian, Arable farming.
Year(s) Of Engagement Activity 2018
URL https://issuu.com/farmersguardian/docs/arable_farming_-_september_2018
 
Description Crop Production Article 
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 Interview and article prepared for stakeholders of Syngenta and AHDB
Year(s) Of Engagement Activity 2017
URL https://cereals.ahdb.org.uk/media/1259820/T2F-June-2017-%E2%80%93-Out-of-sight-out-of-mind.pdf
 
Description Editorial Article in Farmers Guardian May 2018 
Form Of Engagement Activity A magazine, newsletter or online publication
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Short article written on the project aims and preliminary results in the section - Arable farming. Aimed at raising awareness.
Year(s) Of Engagement Activity 2018
URL https://www.fginsight.com/iosr-oilseed-rape-insights/sponsored---iosr-2018-articles/cool-way-to-grow...
 
Description Root Matters' group 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Industry/Business
Results and Impact Key stakeholders of Syngenta hosted at UoN for root matters discussion seminar
Year(s) Of Engagement Activity 2018
 
Description Root Matters- getting to the root of the problem 
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 The workshop included discussion group of 12 farmers, called 'Root Matters', who are investigating different methods for improving rooting.They have split field trials on their farm and are meeting several times over the season with external speakers for discussions around soils and root health. Following the workshop and trial tour key messages were written up in article for CPM magazine.
Year(s) Of Engagement Activity 2018
URL http://www.cpm-magazine.co.uk/2018/04/10/root-matters-getting-root-problem/
 
Description Syngenta Breeders engagement 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Discussion of main findings and future activities
Year(s) Of Engagement Activity 2017
 
Description Syngenta Global engagement 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Global engagement group to discuss major findings
Year(s) Of Engagement Activity 2007
 
Description Syngenta Seedcare 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Stakeholders meeting to discuss major findings
Year(s) Of Engagement Activity 2017
 
Description Syngenta Seedcare Vibrance Launch - Kiev, Ukraine 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Key note speaker at the Syngenta Seedcare Vibrance launch in Kiev, Ukraine -22-24.10.2018
Year(s) Of Engagement Activity 2018