Phytopathology and Biorational Control

The core purpose is to study the interactions between microorganisms, plants and the environment. More specifically, this research program seeks to ascertain how microorganisms affect plant health and environmental quality.

The ‘Phytopathology and Biorational Control’ research program focuses on epidemiology, diagnosis and control of plant pathogens for the benefit of the horticultural industry. Through close collaborations with growers, auctions, seed and agrochemical industries, horticultural research stations and universities, locally as well as internationally, our team works towards professional advice and practical solutions for plant disease problems.

The core purpose of this research program is to study the epidemiology, population dynamics, virulence, aggressiveness and behavior of plant pathogens in relationship to their hosts and to their environment, and to exploit this knowledge for the development of reliable, sustainable and ecologically sound disease management strategies that are compatible with today’s high-tech horticultural crop production systems. The continuous emergence of new diseases, enhanced by increasing global trade, combined with a decreasing availability of authorized pesticides, urges the development of such innovative disease management tools.

Research and consulting - topics

  • Development of molecular diagnostic tools for accurate and fast identification of viral, fungal and bacterial plant pathogens
  • Characterisation of current plant virus problems in greenhouse crops, with a focus on Pepino mosaic virus (PepMV) in greenhouse tomato
  • Development of bioassays to screen plant materials for susceptibility to viral and viroid pathogens and to evaluate the virulence and aggressiveness of different isolates
  • Study the importance of environmental factors in plant virus interactions and disease development
  • Biological control of root knot nematodes through root colonization by beneficial fungi
  • Verify the efficiency of novel, environmentally sound (biological) disease control products
Contact
Christine Vos

Sr. Research Associate
Scientia Terrae vzw

cvo@scientia.be

Publications
Root and foot rot on tomato caused by Phytophthora infestans detected in Belgium.

Lievens, B., Hanssen, I.R.M., Vanachter, A.C.R.C., Cammue, B.P.A., Thomma, B.P.H.J. 2004.
Plant disease. 88: 86.

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Managing Soil-Borne Pathogens : A Sound Rhizosphere to Improve Productivity in Intensive Horticultural Systems, A Proceedings of the XXVI International Horticultural Congress.

Vanachter, A. (Ed.), 2004.
Acta Horticulturae 635, 200 pp.

Genetic characterization of Pepino mosaic virus isolates from Belgian greenhouse tomatoes reveals genetic recombination.

Hanssen, I.M., Paeleman, A., Wittemans, L., Goen, K., Lievens, B., Bragard, C., Vanachter, A.C.R.C. and Thomma, B.P.H.J. (2008)
European Journal of Plant Pathology 121, 131–146.

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Survey of symptom expression and damage caused by Pepino mosaic virus (PepMV) in commercial tomato production in Belgium.

Hanssen, I.M., Paeleman, A., Van Bergen, L., Vandewoestijne, E., Wittemans, L., Goen, K., Vanachter, A.C.R.C. and Thomma, B.P.H.J. (2009)
Acta Hort (ISHS) 808, 185-92.

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Pepino mosaic virus isolates and differential symptomatology in tomato.

Hanssen, I.M., Paeleman, A., Vandewoestijne, E., Van Bergen, L., Bragard, C., Lievens, B., Vanachter, A.C.R.C. and Thomma, B.P.H.J  (2009)
Plant Pathology 58, 450-460.

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Seed transmission of Pepino mosaic virus in tomato.

Hanssen, I.M., Mumford, R., Blystad, D-R., Cortez, I., Hasiów-jareszewska, B., Hristova, D., Pagán, I., Pepeira, A-M, Peters, J., Pospieszny, H., Ravnikar, M., Stijger, I., Tomassoli, L., Varveri, C., van der Vlugt, R. and Nielsen, S.L. (2009)
European Journal of Plant Pathology doi 10.1007/s10658-009-9528-x.

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Pepino mosaic virus: a successful pathogen that rapidly emerged from emerging to endemic in tomato crops.

Hanssen, I.M. and Thomma, B.P.H.J. (2009)
Mol. Plant Pathol.  Doi 10.1111/J.1364-3703.2009.00600.x.

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Cross-protection or enhanced symptom display in greenhouse tomato co-infected with different Pepino mosaic virus isolates.

Hanssen, I.M., Gutiérrez-Aguirre, I., Paeleman, A., Goen, K., Wittemans, L., Lievens, B., Vanachter, A.C.R.C., Ravnikar, M., Thomma, B.P.H.J. (2009)
Plant Pathol. 59: 13-21. Doi 10.1111/j.1365-3059.2009.02190.x. 

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TrichoNema : a Trichoderma-Based Project to Develop a Commercial Bio-Agent Product against Phyto-Nematodes.

Sharon, E., Mor, M., Bar-Eyal, M., Maghodia, A.B., Spiegel, Y., Oka, Y., Van Kerckhove, S., Vanachter, A. and Chet, I., 2010.
Acta Horticulturae 883:223-227.

Ratio of mutated versus wild-type coat protein sequences in Pepino mosaic virus determines the nature and severity of yellowing symptoms on tomato plants.

Hasiów-Jaroszewska, B., Paeleman, A., Parra, N.O., Borodynko, N., Minicka, J., Czerwoniec, A., Thomma, B.P.H.J. and Hanssen, I.M., (2013).
Mol. Plant Pathol., 14 (9): 923-933. 

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Differential tomato transcriptomic responses induced by Pepino mosaic virus isolates with differential aggressiveness.

Hanssen , I.M., van Esse, H.P., Ballester, A.-R., Hogewoning, S.W., Parra, N.O., Paeleman, A., Lievens, B., Bovy, A.G. and Thomma, B.P.H.J. 2011.
Plant Physiology 156: 301-318

Emerging Viral Diseases of Tomato Crops.

Hanssen, I.M., Lapidot, M. and Thomma, B.P.H.J., (2010).
Mol.Plant Microbe Interact., 23: 539-548. 

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Cross-Protection as a Control Strategy for Pepino mosaic virus (PepMV) in Greenhouse Tomato.

De Nayer, F., Goen, K., Paeleman, A., Parra, N.O., Vanachter A.C.R.C., Hanssen I.M., Wittemans, L. and Vandewoestijne, E., (2011). 
Acta Horticulturae, 914: 163-170

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Genome-wide characterization of ISR induced in Arabidopsis thaliana by Trichoderma hamatum T382 against Botrytis cinerea infection.

Mathys, J., De Cremer, K., Timmermans, P., Van Kerckhove, S., Lievens, B., Cammue, B. and De Coninck, B. 2012.
Frontiers in Plant-Microbe Interactions doi: 10.3389/fpls.2012.00108

Major tomato viruses in the Mediterranean basin.

Hanssen, I.M. and Lapidot, M., (2012).
Adv Virus Res., 84: 31-66.

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