Report 2003-2008

1. In October, 14-18, 2007 we celebrated our Xth INTERNATIONAL PLANT VIRUS EPIDEMIOLOGY SYMPOSIUM – CONTROLLING EPIDEMICS OF EMERGING AND ESTABLISHED PLANT VIRUS DISEASES - THE WAY FORWARD, HYDERBAD, INDIA, This international symposium was held at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, Andhra Pradesh, India. The symposium was attended by more than 200 participants from many different countries from five continents. It was the tenth in the series of international symposia held every 2-3 years under the auspices of the Plant Virus Epidemiology (IPVE) Committee of the International Society for Plant Pathology. It was also only the second symposium in this series to be held in a developing country, and the first to occur in Asia. The principal symposium organiser was Lava Kumar (ICRISAT) with help from Farid Waliyah (ICARDA). The main topics covered at the Symposium were: ‘Epidemiology and Evolution’, ‘Emerging Viruses’ and ‘Viruses of Cereal crops and Soil-borne Viruses’, 'Plant Biosecurity & Modelling', 'Virus-Vector evolution & Interactions', 'Advances in Virus Disease Management, 'Characterization and Diagnosis of Viruses & Vectors and 'Molecular Epidemiology and Ecology'.

2. Some of the material presented at the Hyderabad Symposium will be part of complete manuscripts that will be published in a Special Issue of the Elsevier Journal 'Virus Research', which is being edited by Michael J. Thresh, Roger Jones and Alberto Fereres. The special issue will cover papers on virus epidemiology and will be on press by the begining of 2009. This is the third time that the journal 'Virus Research' publishes selected papers offered by the participants of our Plant Virus Epidemiology Symposia.

3. The first web page of our PVE working group was launched in January 2008 (
http://www.isppweb.org/ICPVE/). The web site includes a brief history on how the Plant Virus Epidemiology working group started, and a list of the past Symposia including books of abstracts and Symposia reports. It also includes relevant photographs on past Symposia as well as images on plant viruses, symptoms, insect vectors, etc... We intend to post the information on future Symposia such as the next one which is scheduled for 2010 at Cornell University (USA). We also plan to include information on books, news and links to other web pages related to Plant Virus Epidemiology. In the future we plan that this web page expands to host other issues related to Plant Virus Epidemiology.

 

Alberto Fereres

Chair of the International Committee of Plant Virus Epidemiology


 



Report 2008-2013

July 2013 Committee Report to the ISPP Executive and Council

Committee on the (Insert name of Committee)

 

 

Subject Matter Committee.   International Committee for Plant Virus Epidemiology (ICPVE)

Established: It was established in 1978. First Symposium on 28-31 July, 1981

Web address forSMC. http://www.isppweb.org/ICPVE/

Name (s) of personnel preparing report.. Alberto Fereres. Current Chairman

Nominated Officers. Is the list for your SMCon the ISPP website correct?

No. The ISPP website only shows the name of the current chaiman. The list of the other current members of our SMC should be added.

 

Current membership

ICPVE Committee Members

Alberto Fereres. Current Chairman
Consejo Superior de Investigaciones Cientificas-CSIC
C/Serrano 115 dpdo.
28006 Madrid
Spain
Email: afereres@ccma.csic.es
Website : http://www.ica.csic.es/index.php/en/persona?id=33
Michael Thresh. Founder. Past Chairman
Natural Resources Institute
University of Greenwich at Medway
Central Avenue
Chatham Maritime
Chatham
Kent ME4 4TB
United Kingdom
Email: john.thresh@homecall.co.uk
Roger Jones. Past Chairman. Australian Representative
School of Plant Biology
The University of Western Australia (M084)
35 Stirling Highway
CRAWLEY WA 6009
Australia
Email: roger.jones@uwa.edu.au
Website: http://www.uwa.edu.au/people/roger.jones
Herve Lecoq. European Representative
INRA
Unité de Recherches de Pathologie Végétale
Domaine St-Maurice BP 94
F84143 Montfavet cedex
France
Email: Herve.Lecoq@avignon.inra.fr
Website: http://www.avignon.inra.fr/avignon_eng/les_recherches__1/liste_des_unites/pathologie_vegetale/les_personnes/lecoq_herve 
Stewart Gray. North America Representative
Department of Plant Pathology and Plant-Microbe Biology
College of Agriculture & Life Sciences
Cornell University
334 Plant Science Building
236 Tower Road 
Ithaca, NY 14853-5904
USA
E-mail: smg3@cornell.edu     
Website: http://pppmb.cals.cornell.edu/directory/faculty.cfm?netId=smg3
Nilsa Bosque-Perez. North America Representative
Department of Plant, Soil and Entomological Sciences (PSES)
University of Idaho Campus
Ag Biotech 107
Moscow, ID
USA
E-mail: nbosque@uidaho.edu
Website:  http://www.cals.uidaho.edu/pses/people/fac_pages/p_fac_perez.htm
Lava Kumar. African Representative
International Institute of Tropical Agriculture (IITA)
Oyo Road, PMB 5420, Ibadan
Nigeria
Email: L.kumar@cgiar.org
Website: http://www.iita.org/kumar-lava
Murad Ghanim. West Asia Representative
Department of Entomology
Agricultural Research Organization
The Volcani Center
Bet Dagan 50250
Israel
Email: ghanim@volcani.agri.gov.il
Website: http://www.agri.gov.il/people/759.aspx
Lawrence Kenyon. East Asia Representative
AVRDC – The World Vegetable Center
PO Box 42, Shanhua, Tainan 74199
Taiwan ROC
Email: lawrence.kenyon@worldveg.org
Website: http://avrdc.org/
 
Jan F.  Kreuze. South America Representative
International Potato Center (CIP)
Apartado 1558,
Lima 12
Peru
Email: j.kreuze@cgiar.org
Website: http://www.cipotato.org/

(indicate whether you have a larger mailing list of members (e.g. plux xxx on mailing list)

Yes, we have a longer mailing list of members

Committee Meetings:

We celebrated 2 meetings in the 2008-2013 period.

The meetings were the following:

XIth INTERNATIONAL PLANT VIRUS EPIDEMIOLOGY SYMPOSIUM – Plant Viruses: Exploiting Agricultural and Natural Ecosystems - USA, Ithaca (Cornell University), 20 - 24 June 2010

 XIIth INTERNATIONAL PLANT VIRUS EPIDEMIOLOGY SYMPOSIUM – Evolution, Ecology & Control of Plant Viruses - Tanzania, Arusha (IITA), 28 January – 1 February 2013

Committee Activities:

ˇ         We organized and celebrated 2 International meetings focused on  Plant Virus Epidemiology

ˇ         We prepared 2 book of abstracts

ˇ         We edited and published two special issues on Plant Virus Epidemiology in the journal “Virus Research” (Elsevier). The issues included papers related with oral presentations selected at the Xth and XIth IPVE Symposia.

Subject Matter Committee focus issues:

ˇ         See Appendix on the reports of 2 past meetings celebrated by our SMC

Additional work identified: Our Committee is preparing and editing a new Special Issue on Plant Virus Epidemiology to be published in the journal Virus Research (Elsevier) in the first months of 2014. The new issue will include 25 papers on selected talks presented at the XIIth Symposium of PVE held in Arusha, Tanzania in January, 2013.

Report Submitted by Alberto Fereres (Current Chairman of the ICPVE)

Consejo Superior de Investigaciones Cientificas-CSIC

C/Serrano 115 dpdo.

28006 Madrid

Spain

Email: a.fereres@csic.es

Website : http://www.ica.csic.es/index.php/en/persona?id=33

 

 


APPENDIX

 

REPORT ON THE XIth INTERNATIONAL PLANT VIRUS EPIDEMIOLOGY SYMPOSIUM – Plant Viruses: Exploiting Agricultural and Natural Ecosystems -, held together with the PLANT VIRUS ECOLOGY NETWORK. CORNELL UNIVERSITY, ITHACHA, NEW YORK, USA. 20-24, 2010

This great International Symposium was held on June 20-24, 2010 at the Campus of Cornell University, New York, USA. This Symposium was the 11th of a series of international symposia held under the auspices of the Plant Virus Epidemiology (IPVE) Committee (http://www.isppweb.org/ICPVE/), which is part of the International Society of Plant Pathology. This time, the IPVE Symposium was held and organized together with the Plant Virus Ecology Network (PVEN), an NSF-funded Research Coordination Network (http://bioinfosu.okstate.edu/pve_rcn/PVENhome.html). This joint effort was very successful as both working groups share common interests, allowing interactions in the field of plant virus epidemiology and virus ecology in both agricultural and natural ecosystems. The main symposium organizer was Stewart Gray, with help from Keith Perry, Sunny Power, Brian Nault and Marc Fuchs (Cornell University, USA).

 

The Symposium covered the following 4 sessions: (1) Virus Epidemiology and Etiology, (2) Virus Ecology and Evolution, (3) Vector Biology and Virus Transmission and (4) Virus Disease Management, Detection and Diagnosis. All contributions were organized in a series of 45-min KeyNote presentations and 30 min invited talks as well as a number of 15-min oral presentations, poster exhibitions and 5min-poster advertisements.

 

The symposium was attended by 150 participants coming from the five continents and was sponsored by both IPVE and PVEN groups, as well as other institutions and private companies: USDA, Cornell University, Agdia Inc., Dow Agrosciences, Nichimo America and Syngenta Crop Protection.

The programme started on Sunday 20rd June with registration and a welcoming reception and dinner at the Appel Commons building in the Cornell North Campus

On Monday 21st June the opening session started with introductory talks by Stewart Gray, Carolyn Malmstrom (PVEN) and Alberto Fereres (Chairman of the IPVE Committee).  Then, the first keynote talk by Mike Jeger from Imperial College, London presented a very interesting talk on how plant virus and vector models need to be linked for a full understanding of plant virus epidemiology. He discussed how vectors respond to different cues derived from plants, natural enemies and other environmental factors that directly affect the temporal and spatial scale pattern of plant disease dynamics. The rest of the day the session covered a presentation on the epidemics of cassava mosaic begomovirus and cassava brown streak ipomovirus in East Africa presented by James Legg (IITA, Tanzania). The differences observed in the temporal and spatial patterns of spread of both viruses were associated to variations the mode of transmission and in the population density of its vector, Bemisia tabaci. Additional invited presentations covered studies on the molecular epidemiology of potyviruses infecting cucurbits in France to explain why new emerging virus strains are commonly replaced in south-eastern France (Cecile Desbiez; INRA, France). This talk was followed by a presentation by Roger Jones (Perth, Australia) on the epidemiology of Zucchini yellow mosaic virus and the effectiveness of non-host plant barriers and other integrated management practices used to reduce disease incidence in cucurbits in Western Australia. Albert Culbreath (U. of Georgia, USA) presented the results of field studies on the epidemiology and disease management strategies for Tomato spotted wilt virus infecting peanuts grown in southeastern United States. The session was completed by a very comprehensive presentation by Nilsa Bosque-Perez (U. of Idaho, USA) on the influence of virus-induced changes in plants on aphid vectors and their impact on plant virus epidemiology.

On Tuesday 22nd June the session theme was ‘Virus Ecology and Evolution’.  The Keynote presentation was on the community ecology of Barley/celeal yellow dwarf viruses in Western US grasslands (Alison “Sunny” Power, Cornell Univ. USA). Sunny explained how different biotic and abiotic factors affect virus prevalence on annual and perennial grasses. Then, William Schneider (USDA, USA) explained how aphids might assist the evolution of Soybean dwarf luteovirus when allowed to provide constant selection pressure. The plant-virus-co-evolution of the most prevalent viruses in six wild populations of Arabidopsis thaliana in Central Spain was the topic covered by Fernando Garcia-Arenal (U. Politecnica de Madrid, Spain). Then, Marilyn Roossinck presented her studies on a survey and phylogeny of wild plant viruses collected in the region of Tallgrass Prairie Preserve, Oklahoma and the Area de Conservacion de Guanacaste, Costa Rica. Jan Kreuze (CIP, Peru) presented their results of a new technique based on deep sequencing to rapidly identify novel viruses in plants. The invited presentations on virus ecology ended with a presentation by Patrick Cronin (U. of North Carolina, USA) on how host physiological phenotype can predict some epidemiological parameters (susceptibility to infection, competence to infect vectors, and ability to support vector populations). At the end of the day there were two Business Meetings held independently for IPVE and PVEN. The Chairman of IPVE presented an offer by Elsevier to prepare a Special Issue of invited articles to be published in the journal “Virus Research” covering the different themes included in the Symposium.  There was also an open discussion to select candidates to act as new representatives of the Committee. The venues and volunteers for organizing the next IPVE Symposium (France, UK and Tanzania) were also presented. 

On Wednesday 23rd June the session covered several presentations on Vector Biology and Virus Transmission. The keynote address was on the interactions between the non-circulative virus, Cauliflower mosaic virus, its aphid vector and their shared host plant (Stephane Blanc, INRA, France). The exact anatomical structure of the common duct within the aphid maxillary stylets that acts as a receptor to the virus helper proteins was described. He also described recent findings on how the virus optimizes its accessibility to the vector within the infected cells. This talk was followed by the description of an aphid gut binding peptide that interferes with the entry of Pea enation mosaic virus into the hemocoel (Bryony Bonning from Iowa State U., USA). In her talk she explained how the peptide binds to the midgut and hindgut of the pea aphid reducing the uptake of the virus into the hemocoel. The interactions between grapevine leafroll-associated viruses and their mealybug vectors was presented by Rodrigo Almeida (U. of California, Berkeley, USA) followed by studies on the impact of an elevated concentration of C02 on the infection by Cereal yellow dwarf virus, the population dynamics of its aphid vector Rhopalosisphum padi, and its host plant, wheat (Piotr Trebicki, DPI, Australia). The retention sites of criniviruses within the foregut of its vector, Bemisa tabaci was the topic addressed by James Ng (U. of California, Riverside, USA). Drake Stenger closed the session presenting a talk about the polymorphism of a phytoreovirus transmitted by the glassy-winged sharpshooter, Homalodisca vitripennis.

On Thursday 24th June the session theme was ‘Virus Disease Management, Detection and Diagnosis’. Keynote presentation was on the clean seed programs in Kenya, stressing the importance of producing virus-free seeds in Africa, and the ways that farmers are engaged with the private sector to build up together clean-seed programs (Ian Barker,  CIP, Nairobi, Africa). Then, a presentation by Jari Valkonen (U. of Helsinki, Finland) addressed the topic of Cryotherapy of shoot tips as an efficient means for virus and phytoplasma control and healthy plant production in several crops. Then, Scott Adkins (USDA, FL, USA) presented a talk on the ecology and management of whitefly-transmitted vegetable viruses in Florida. The combination of natural and engineered resistance to control rhizomania in sugar beets was the theme addressed by Britt-Louise Lennefors (Syngenta Corp. Sweeden).  Renato Resende (U. de Brasilia, Brazil) presented his work on the development of broad, stable and durable resistance to begomoviruses in Brazilian tomato lines. Finally, the session ended on studies about the flights and dispersal biology of the soybean aphid as a mean to increase the effectiveness of foliar protectants and reduce the incidence of PVY in potato (Russell Groves, U. of Wisconsin, USA).

 

This eleventh in the series of International Symposia on Plant Virus Epidemiology was very well organized, maintaining the high standards set by past meetings of the IPVE.  Stewart Gray and his team are to be congratulated over a job well done.

 

Alberto Fereres

23/09/10

 

REPORT ON THE 12th INTERNATIONAL PLANT VIRUS EPIDEMIOLOGY SYMPOSIUM – Evolution, Ecology & Control of Plant Viruses -, held at Arusha, Tanzania. 28 January – 1 February 2013. 

The12th International Plant Virus Epidemiology Symposium marked a special milestone in our ICPVE’s history - the first one in Africa -, a unique feat for which we are very proud. This Symposium was the 12th of international symposia held every 3 years under the auspices of the International Committee on Plant Virus Epidemiology (ICPVE) (http://www.isppweb.org/ICPVE/), which is part of the International Society of Plant Pathology. The main symposium organizer was Dr. Lava Kumar from the International Institute of Tropical Agriculture (IITA).

 

The Symposium covered the following 10 sessions: (1) Changing Phase of Plant Virus Epidemiology, (2) Climate Change and Modeling, (3) Virus Vectors and Virus-Vector Interactions, (4) IPM (CRSP, special session), (5) ICPVE Business Meeting, (6) Diagnostics and Surveillance, (7) Epidemiology and Ecology, (8) Disease Control, (9) Virus Evolution, (10) Plant Virology in Sub-Saharan Africa

 

All contributions were organized in a series of Keynote presentations and invited talks as well as a number of 15-20 min oral presentations and poster exhibitions.

 

The symposium was attended by 150 participants coming from the five continents and was organized by the ICPVE and IITA in partnership with the Mikocheni Agricultural Research Institute (MARI, Tanzania), the National Agricultural Research Organization (NARO, Uganda), the West and Central African Council for Agricultural Research and Development (CORAF/WECARD), Biodiversity International and the Asian Vegetable Research and Development Center (AVRDC- The World Vegetable Center).  It was sponsored by other institutions and private companies: CGIAR's RTB and SP‐IPM programs, CORAF/WECARD, Plant Virus Ecology Network (PVEN), the USAID‐funded IPM‐CRSP and Africa RISING projects, Agdia‐Biofords, BASF, and Inqaba Biotec.

 

 

Monday 28thrd January.  The programme started with registration and the inauguration ceremony with introductory talks by Victor Manyong (IITA East Africa), Alberto Fereres (ICPVE), Joseph Ndunguru (Mikocheni Agriculture Research Institute), Nteranya Sanginga (IITA), Fidelis Myaka (Ministry of Agriculture Food Security and Cooperatives, Tanzania) and Lava Kumar (IITA).

 The first Session on Changing Phase of Plant Virus Epidemiology was opened by Mike Thresh, the founder and past chairman of the ICPVE, who offered a keynote lecture on plant virus epidemiology over the past century. He discussed the major milestones and achievements in plant virus epidemiology since the beginning of the 20th century. His talk was followed by Roger Jones, who offered a keynote lecture on recent advancements, trends and new technologies applied to plant virus epidemiology including knowledge enhancement, data collection and processing, and provision of more effective prediction and decision support systems to optimize virus control measures. The following talk by Alberto Fereres covered aspects on plant virus-vector interactions, on how some plant viruses can directly and indirectly manipulate the behavior and performance of their insect vectors to maximize their transmission and spread.

 The Climate Change and Modeling session was opened by Karen Garrett that described how decision support systems (DSS) and certain indexes (Index of Insurance) based on weather data could be used by farmers for prediction of plant virus epidemics and yield loss under new climate scenarios. This was followed by a keynote talk by Roger Jones who offered a very comprehensive and holistic review on the influence of climate change on plant virus epidemics. He explained all the gaps and identified all the needs for research to understand how changes in climate (eg. an increase in temperature and CO2) could affect plant viruses, host plants and virus vectors. One of the likely effects of a raise in temperature is the increase in virus titer and earlier symptom expression as shown in the talk by Fiona Constable for BYDV. George Kennedy gave an interesting talk on a weather-based model on TSWV infecting tobacco in North Carolina. The model is based on the density of vector populations the preceding year and specific weather parameters that influence vector abundance and dispersal as well as the abundance and persistence of virus sources.

 Tuesday 29thrd January. The session on Virus-Vector Interactions was opened by Stewart Gray who gave an overview on luteovirus, vector and host protein interactions and how several aphid proteins can be used as effective biomarkers for identifying and predicting which aphid populations are efficient virus vectors. His talk was followed by Nilsa Bosque-Perez who explained how viruses may modify host plant physiology to attract their vectors and increase the probability of virus transmission and spread. She used two examples of Luteoviridae, BYDV and PLRV, to show that viruliferous aphids prefer non-infected plants while non-viruliferous aphids prefer virus-infected plants. A talk by James Legg described the prevalence and distribution of different haplotypes of Bemisia tabaci driving cassava virus disease epidemics throughout East and Central Africa. A review on the endosymbiont proteins of B. tabaci and their role on begomovirus transmission was the topic of the talk by Murad Ghanim. The ecology of the banana aphid, the vector of banana bunchy top nanovirus and the different integrated control options of BBTD were covered by Rachid Hanna. The gaps and future prospects for research on nanovirus transmission by aphid vectors were discussed by Stephane Blanc. The session ended with a talk by Martin Verbeek on the mode and transmission mechanisms of torradoviruses by their whitefly vectors, B. tabaci and Trialeurodes vaporariorum.

 The special session on IPM-CRSP included talks on management of aphid, beetle, seed and contact-transmitted viruses in tropical cropping systems (Sue Tolin), followed by a talk by Judy Brown on the biodiversity and prevalence of begomoviruses and the different B. tabaci haplotypes in Central America and sub-saharan Africa. Naidu Rayapati spoke about the epidemiology and management of tospoviruses in South Asia, including IPM strategies to mitigate their negative impact on tomato production. The session was finished by Lawrence Kenyon who offered a talk on the emergence and diversity of begomoviruses infecting solanaceous crops in Southeast Asia.

 The Business Meeting Session at the end of the day was a very special one, because we had the opportunity to honor Karl Maramorosch in his 98th birthday who gave us a talk on the biography of Nathan Salaman, first professor of plant virus diseases. The talk was followed by a very emotional moment in which the organizing committee offered a series of awards and honors to scientists for their outstanding contribution to the field of plant virus epidemiology. A plaque to honor their achievements was given to Karl Maramorosch, Mike Thresh, Roger Jones, Mike Irwin, Benny Raccah, Herve Lecoq and Alberto Fereres.

 Wednesday 30th, January. An excursion to Ngorongoro Crater, Arusha National Park and a Flower Plantation were excellent choices for visiting the exuberant wildlife and beautiful landscapes of Tanzania.

 Thursday 31st January. Two parallel sessions, one on Diagnostics and Surveillance and another on Epidemiology and Ecology were offered. Stephan Winter gave a presentation on next generation diagnostic technology of plant viruses and Jan Kreuze on field level diagnostic procedures. Monica Carvajal covered a talk on viruses in the diagnosis of cassava viruses present in Colombia while Susan Seal spoke about the characterization of badnaviruses and pararetroviruses in West Africa.

 The session en epidemiology and ecology was opened by Herve Lecoq who gave an overview on the molecular epidemiology of Zucchini yellow mosaic virus in cucurbits and alternative reservoir host plants in France. Eugenie Hebrard followed on a comprehensive study on the distribution, and molecular diversity, origin and diversification of Rice yellow mottle virus in Tanzania. Michael Pearson gave an update on the present situation of viruses of kiwifruit in New Zealand. The session ended with a talk by Nikos Katis on the epidemiology of criniviruses in Greece.

 A Session on Disease Control was offered covering several aspects of virus control, including cultural methods (Alvin Simmons), host plant resistance (Gad Loebenstein , Ismail Tabbi and Benoit Moury). A Session on Virus Evolution was also part of the evening parallel sessions that included talks by Rob Briddon on the molecular basis for resistance breaking in cotton against the virus complex causing cotton leaf curl disease in South Asia. The micro-evolution of Beet necrotic yellow vein virus using next-generation deep sequencing was the topic of the presentation by Claude Bragard.

 Friday, February 1st. The meeting ended with a special session on Plant Virology in Sub-Saharan Africa. The keynote talk by Claude Fauquet described the many different viruses infecting cassava and the devastating pandemics occurring in Africa since 1935 followed by the coordinated plans that are being prepared to prevent Cassava brown streak disease from reaching West Africa. The session finished with a talk by Rene van der Vlugt on the Q-bank plant virus database (http://www.q-bank.eu), a very valuable reference collection in plant virology, provides the identification and description of many plant viruses.

 This 12th in the series of International Symposia on Plant Virus Epidemiology was very well organized, maintaining the high standards set by past meetings of our ICPVE.  Lava Kumar and his team are to be congratulated over a job well done.

  Alberto Fereres

11/03/13