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Short CVZacharias A. Pretorius obtained the B.Sc. Agric (Plant Pathology and Entomology, 1977), B.Sc. Agric Honours (1979) and M.Sc. Agric (1982) degrees at the University of Stellenbosch. In 1987 he received a PhD from the University of Natal. In 1978 he started his career as a plant pathologist in the cereal rust program at the Small Grain Centre of the former Department of Agricultural Technical Services. He has spent sabbaticals at the Cereal Rust Laboratory and University of Minnesota (1982/83) and University of Sydney (1997). In 1989 he joined UFS as lecturer in Plant Pathology and currently serves as chairperson of the Department of Plant Sciences. He teaches an undergraduate course in Plant Disease Control and coordinates a master’s module in Integrated Pest Management. Several masters and doctoral students have graduated under his supervision. He has served as President of the Southern African Society for Plant Pathology and currently holds a B1 rating from the NRF. Area of Expertise
My main research interest is genetic resistance to rust diseases of field crops, particulary cereals. I was responsible for the first comprehensive characterisation of pathogenic variation in the wheat leaf rust fungus in South Africa and have extended this knowledge to wheat stem and stripe rust, barley leaf rust, oat leaf and stem rust, common rust of maize, sunflower rust and soybean rust. In addition, post-graduate students have worked on stem rot of peanut, lentil rust, rust and anthracnose of drybean and ear rot of maize. I have been involved in the identification and genetic analyses of wheat germplasm with effective resistance (emphasis on durable resistance) to leaf, stem and stripe rust, and the establishment and refinement of evaluation and selection protocols. In collaboration with colleagues a research niche in the assessment and utilization of adult plant resistance to cereal rusts has been developed, with special emphasis on phenotyping and molecular markers. Other areas of expertise include germplasm development, Fusarium head blight and Karnal bunt of wheat.
Courses PresentedPPG314
PPG324 (co-responsible)
PPG634 (co-responsible)
MVL762 (coordinator) Publications (Short List)Anguelova-Merhar, V., Van der Westhuizen, A.J. & Pretorius, Z.A. 2002. Intercellular chitinase and peroxidase activities associated with resistance conferred by Lr35 to leaf rust of wheat. J. Plant Physiol. 159: 1259-1261.
Anguelova-Merhar, V.S., Van der Westhuizen, A.J. & Pretorius, Z.A. 2001. Beta-1,3-glucanase and chitinase activities and the hypersensitive response of wheat to leaf rust. J. Phytopathology 149: 381-385.
Boshoff, W.H.P., Pretorius, Z.A. & Van Niekerk, B.D. 2002. Establishment, distribution and pathogenicity of Puccinia striiformis f. sp. tritici in South Africa. Plant Disease 86:485-492.
Boshoff, W.H.P., Pretorius, Z.A. & Van Niekerk, B.D. 2002. Impact of leaf rust on spring wheat in the winter rainfall region of South South Africa. SA J Plant & Soil 19: 84-88.
Boshoff, W.H.P., Pretorius, Z.A. & Van Niekerk, B.D. 2002. Resistance in South African and foreign wheat cultivars to pathotypes 6E16A- and 6E22A- of Puccinia striiformis f. sp. tritici. SA J Plant & Soil 19: 27-36.
Boshoff, W.H.P., Pretorius, Z.A. Van Niekerk, B.D. 2003. Fungicide efficacy and the impact of stripe rust on spring and winter wheat in South Africa.
Boshoff, W.H.P., Van Niekerk, B.D. & Pretorius, Z.A. 2000. Pathotypes of Puccinia graminis f. sp. tritici detected in South Africa during 1991-1997. SA J Plant & Soil 17: 60-62.
Crous, P.W., Van Jaarsveld, A.B., Castlebury, L.A.., Carris, L.M., Frederick, R.D. & Pretorius, Z.A. 2001. First report of Karnal bunt from the African continent. Plant Disease 85:561.
Dunhin, B., Pretorius, Z.A., Kloppers, F.J., Bender, C.M. & Flett, B. 2004. Descriptions of spore stages of Puccinia sorghi in South Africa. SA J Plant & Soil 21: 48-52.
Jin, Y., Singh, R.P., Ward, R.W., Waneyra, R., Kinyua, M., Njau, P., Fetch, T., Pretorius, Z.A. & Yahyaoui, A. 2007. Characterization of seedling infection types and adult plant infection responses of monogenic Sr gene lines to race TTKS of Puccinia graminis f. sp. tritici. Plant Disease 91: 1096-1099.
Kemp, G., Bergmann, C.W., Clay, R., Van der Westhuizen, A.J. & Pretorius, Z.A. 2003. Isolation of a polygalacturonase-inhibiting protein (PGIP) from wheat. Molecular Plant-Microbe Interactions 16: 955-961.
Liebenberg, M.M. & Pretorius, Z.A. 2004. Inheritance of resistance to Uromyces appendiculatus in the South African dry bean cultivar Kranskop. SA J Plant & Soil 21: 245-250.
Liebenberg, M.M., Liebenberg, A.J. & Pretorius, Z.A. 2005. Breeding for rust resistance increases dry bean productivity in the South Africa. SA J Plant & Soil 22: 129-139.
Liebenberg, M.M., Mienie, C.M.S. & Pretorius, Z.A. 2006. The occurrence of rust resistance gene Ur-13 in common bean cultivars and lines. Euphytica 150: 365-386.
Marais, G.F., McCallum, B., Snyman, J.E., Pretorius, Z.A. & Marais, A.S. 2005. Leaf and stripe rust resistance genes Lr54 and Yr37 transferred to wheat from Aegilops kotschyi. Plant Breeding 124: 538-541.
Marais, G.F., Pretorius, Z.A., Wellings, C.R., McCallum, B & Marais, A.S. 2005. Leaf and stripe rust resistance genes transferred to common wheat from Triticum dicoccoides. Euphytica 143: 115-123.
Mienie, C.M.S., Liebenberg, M.M., Pretorius, Z.A. & P.N. Miklas. 2005. SCAR markers linked to the Phaseolus vulgaris rust resistance gene Ur_13. Theoretical and Applied Genetics 111: 972-979.
Negussie, T., Pretorius, Z.A. & Bender, C.M. 2005. Components of rust resistance in lentil. Euphytica 142: 55-64.
Negussie, T., Pretorius, Z.A. & Bender, C.M. 2005. Effect of some environmental factors on in vitro germination of urediniospores and infection of lentils by rust. J. Phytopathology 153: 43-47.
Pretorius, Z.A., Kloppers, F.J. & Frederick, R.D. 2001. First report of soybean rust in South Africa. Plant Disease 85: 1288.
Pretorius, Z.A., Pakendorf, K.W., Marais, G.F., Prins, R. & Komen, J.S. 2007. Challenges for sustainable control of cereal rust diseases in South Africa. Aust J Agric Research 58: 593-601.
Pretorius, Z.A., Singh, R.P., Wagoire, W.W. & T.S Payne. 2000. Detection of virulence to wheat stem rust resistance gene Sr31 in Puccinia graminis f. sp. tritici in wheat. Plant Disease 84: 203.
Prins, R., Ramburan, V.P., Pretorius, Z.A., Boyd, L.A., Boshoff, W.H.P., Smith, P.H. & Louw, J.H. 2005. Development of a doubled haploid mapping population and linkage map for the bread wheat cross Kariega X Avocet S. SA J Plant & Soil 22: 1-8.
Ramburan, V.P., Pretorius, Z.A., Louw, J.H., Boyd, L.A., Smith, P.A., Boshoff, W.H.P. & Prins, R. 2004. A genetic analysis of adult plant resistance to stripe rust in the wheat cultivar Kariega. Theoretical and Applied Genetics 108: 1426-1433.
Snyman, L., Pretorius, Z.A., Kloppers, F.J. & Marais, G.F. 2003. Detection of adult-plant resistance to Puccinia triticina in a collection of wild Triticum species. Genetic Resources and Crop Evolution 51: 591-597.
Stansbury, C.D. & Pretorius, Z.A. 2001. Modelling the potential distribution of Karnal bunt on wheat in South Africa. SA J Plant & Soil18:159-168.
Van Niekerk, B.D. Pretorius, Z.A. & Boshoff, W.H.P. 2001. Occurrence and pathogenicity of Puccinia hordei on barley in South Africa. Plant Disease 85:713-717.
Van Niekerk, B.D. Pretorius, Z.A. & Boshoff, W.H.P. 2001. Pathogenic variability of Puccinia coronata f. sp. avenae and P. graminis f. sp. avenae on oat in South Africa. Plant Disease 85: 1085-1090.
Van Niekerk, B.D., Pretorius, Z.A. & Boshoff, W.H.P. 2001. Potential yield losses caused by barley leaf rust and oat leaf and stem rust to South African barley and oat cultivars. SA J Plant & Soil 18: 108-113.
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