Prof. Dr. Ir. Ariena h. C. Van bruggen



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Prof. Dr. Ir. ARIENA H.C. VAN BRUGGEN

Professor of Plant Pathology

Dept. of Plant Pathology and the Emerging Pathogens Institute

Hull Road, PO Box 110680, Gainesville, Fl 32611-0680

Tel. 1-352-273-4649 or 1-352-273-9396, Fax 1-352-392-6532,

E-mail: ahcvanbruggen@ufl.edu




EDUCATION

  • PhD in Plant Pathology (1985) Cornell University, Ithaca, NY, USA

with a Minor in Vegetable Crops,

  • MSc in Plant Pathology (1976) Agricultural University, Wageningen, the

Netherlands
EMPLOYMENT

  • Professor of Plant Pathology and Epidemiologist (2009-present), University of Florida, USA

  • Professor and Chair of Biological Farming Systems (1999-2009), Wageningen, the Netherlands

  • Professor in Plant Pathology, with emphasis on vegetable crops (1996-1999), Univ. of California at Davis, CA

  • Associate Professor in Plant Pathology, with emphasis on vegetable crops (1992-1996), UC Davis

  • Assistant Professor in Plant Pathology, with emphasis on vegetable crops (1986-1992), UC Davis

  • Post-doctoral Associate in Environmental Biology (1985-1986), Boyce Thompson Institute, Ithaca, NY

  • Research and Teaching Assistant in Plant Pathology (1980-1984), Cornell University, Ithaca, NY

  • Associate Expert in Plant Pathology (1976-1980), Food and Agricultural Organization of the U.N., in Ethiopia


INTERNATIONAL AWARDS

  • Fellow of the American Phytopathological Society (2012).

  • APS Ciba-Geigy award from the American Phytopathological Society (1993), for 'significant contributions to the advancement of knowledge of plant diseases and their control'

  • Jakob Eriksson Gold Medal from the Jakob Eriksson Prize Fund Commission, Swedish Academy of Sciences (1993), in recognition of ' your original and thorough work on the new disease, 'corky root' of lettuce, caused by a hitherto unknown pathogen, the bacterium Rhizomonas suberifaciens.'


CURRENT AND RECENT GRANTS


  • ‘the effects of antibiotic injections for citrus HLB control on microbial community composition and antibiotic resistance as well as susceptibility of citrus to Phytophthora root rot’, FDACS, 2014, PI Ariena van Bruggen, co-PI Erica Goss, $90,000.

  • ‘Modeling of Huanglongbing spread in citrus groves and effects of management strategies’ Esther B. O’Keeffe Foundation, PI-Ariena van Bruggen $340,000.

  • ‘Climate change adaptation needs for food security in the Andes’ USAID-linkage fund with CIP, Ecuador, 2012-2014, PI-Walter Bowen $130,000 ($55,000 for van Bruggen and Goss).

  • ‘Collaborative Research and Capacity Building of Sokonie University of Agriculture and the National Agricultural Research System in Tanzania’ USAID IAGRI, 2012-2016, PI Walter Bowen ($177,297 for van Bruggen).

  • ‘The leaf litter cycle of citrus black spot and improvements to current management practices’ CRDF, 2013-2016, PI Megan Dewdney, $600,000 ($43,000 for van Bruggen)

  • ‘Science-based evaluation of regional risks for Salmonella contamination of irrigation water at mixed produce farms in the Suwannee River watershed’, Center for Produce Safety, 2010-2013, Co-PI on a collaborative grant with Anita Wright, Paige Adams and Michelle Danyluk, $398,922.

  • ‘Quality assessment of the U.S. Greenhouse Certification Program’ USDA APHIS, 2010-2014, PI, $462,773.

  • ‘Prevention of the spread of citrus black spot outside of southern Florida’ USDA APHIS, 2011-2012, PI, $50,000.

  • ‘Quantification of the risk of infection of citrus trees with the Huanglongbing pathogen from contaminated seeds’, Smallwood Foundation, PI, with Glenn Morris, 2010-2012, $41,000.


CURRENT RESEARCH AND TEACHING ACTIVITIES
Prof. Van Bruggen carries out fundamental and applied research on ecosystem health in relation to the invasion by plant and human pathogens. A healthy ecosystem is characterized by a dynamically balanced and diverse community of organisms, stability and resilience after disturbances, minimal losses of nutrients and energy, and sporadic outbreaks of pests and diseases. We hypothesize that the extent of oligotrophy, in terms of easily available carbon sources and mineral nutrients, largely determines the health status of an ecosystem. This concept was developed based on research results on the survival and spread of enteric human pathogens (Escherichia coli O157:H7 and Salmonella enterica) from manure to soil, water and plants. A probabilistic risk model was developed for the contamination of a lettuce crop by manure, soil, and water contaminated with E. coli O157:H7. Internalization of Salmonella enterica serovar Typhmurium in tomato leaves, stems and fruits by was shown to occur from contaminated water and aerosols. Simulation models were developed for the survival of E. coli O157:H7 and Salmonella Typhimurium in manure, manure-amended soil and water. We are currently collaborating on a risk model for the transfer of Salmonella from soil and water to tomato fruits.

Besides research on ecosystem health and transmission routes of enteric pathogens, the integration of various temporal and spatial scales of ecological processes and the dispersal capacity of (re)emerging pathogens in agroecosystems have been recurrent themes in van Bruggen’s research projects. The dynamics of disease progress can be understood better when we take the response time into account for the different developmental stages of the pathogen in relation to the hourly dynamics of environmental conditions rather than average conditions. This was shown for the plant pathogens Bremia lactucae and Phytophthora infestans as well as for the human pathogens E. coli O157:H7 and S. enterica serovar Typhimurium. This research has implications for the effects of climate change on pathogen growth. We are currently developing a simulation model for the potential effects of climate change on late blight development.

On the applied side, an audit-based certification system for the greenhouse ornamental industry, including a risk model for pathogen spread, has been developed. In addition, the epidemiology and spread of emerging plant pathogens like Candidatus Liberibacter asiaticus and Guignardia citricarpa associated with citrus huanglongbing and black spot, respectively, as well as Raffaelea lauricola causing laurel wilt, have been studied and simulation and risk models have been developed for the spread of these pathogens.
Prof. Van Bruggen teaches a course on plant disease epidemiology and a colloquium series on the use of statistical methods in plant pathology. She is also co-chairing a journal club on the ecology and epidemiology of emerging pathogens.



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