Dr Gert Marais
Position
Senior Lecturer
Department
Plant Sciences
Address
LG
Plant Science
IB 64
R7305
Telephone
051 4012074
Office
Biology Building
Information

Short CV

 Gert J. Marais obtained a B.Sc. (Microbiology & Botany, 1989), BSc Honours (Microbiology, 1990), and a PhD (Mycology, 1996) at the University of the Free State.  In 1994 he started working as a scientist in the Chemical and Microbial Products Programme at CSIR Foodtek.  In 1996 he became a project leader and in 1998 he moved to the Food Quality Programme at the CSIR.  He was appointed as a specialist scientist in 1999 and started working in 2000 in the Process Biotechnology Programme at CSIR Bio/Chemtek.  In 2001 he was seconded to the University of Pretoria and headed and established the Centre for Applied Mycological Studies in 2004.  During 2006 and 2008, Gert Marais was appointed as a national consultant for the FAO in advising the Departments of Health and Agriculture on mycotoxins.  In 2010, he moved with his family to Bloemfontein and started working at the University of the Free State as a senior lecturer in the Plant Sciences department.  In 2017 the Pecan Health Research Group was established in collaboration with the South African Pecan Nut Producers Association (SAPPA), which is headed by him.  The research group is focussing on pecan diseases and optimising the health of pecans in South Africa.

Publications

Lategan-Potgieter, R. & G.J. Marais. 2017. Health benefits of pecan nuts. SA Pecan 75: 25. 

Marais, G.J. 2017. Fungi associated with pecan diseases in South Africa. SA Pecan 75. 22-24.

Marais, G.J. 2016. Pecan diseases in South Africa. SA Pecan 73: 26-27.

Marais, G.J. 2015. Fungal diseases of pecans in South Africa. Spilpunt March/April: 16-17.

Slippers, B., J. Roux, M.J. Wingfield, F.J.J. van der Walt, F. Jami, J.W.M. Mehl & G.J. Marais 2014. Confronting the constraints of morphological taxonomy in the fungi: A Botryosphaeriaceae case study. Persoonia 33: 155-168. (Impact factor: 4.225) (ISSN 0031-5850)

Dawlal, P., E. Barros & G.J. Marais. 2012. Evaluation of maize cultivars for their susceptibility towards mycotoxigenic fungi under storage conditions. Journal of Stored Products Research, 48: 114-119.

Barros MEC, Crampton MC, Marais GJ & S Lezar. 2008. A DNA-based method to quantify Stenocarpella maydis in maize. Maydica, 53(2): 125-129. (Impact factor: 0.494)

Naicker, D., G.J. Marais, H. van den Berg & M.G. Masango. 2007. Some fungi, zearalenone and other mycotoxins in chicken rations, stock feedstuffs, lucerne and pasture grasses in the communal farming area of Rhenosterkop in South Africa. Journal of the South African Veterinary Association, 78(2): 69-74.

 Van der Walt, F.J.J., G.J. Marais and A. Lubben. 2007. Fungal biodiversity of indigenous trees and plants in the Northern Cape. South African Journal of Science 103(1-2): xiii-xiv.

Van der Nest, A., G.J. Marais and A. Lubben. 2007. Fungi and their mycotoxins associated with animal feed in South Africa. South African Journal of Science 103(1-2): xiv-xv.

Dawlal, P, G.J. Marais and A. Lubben. 2007. The effect of irradiation on mycotoxigenic fungi in commercially produced maize cultivars. South African Journal of Science 103(1-2): xvi.

Kvas, M., G.J. Marais, E.T. Steenkamp and A. Lubben. 2005. Mycotoxigenic fungi associated with commercial pet food. South African Journal of Science 101: xxiv.

Lefyedi, M.L., G.J. Marais, M.F. Dutton & J.R.N. Taylor. 2005. The microbial contamination, toxicity and quality of turned and unturned floor malted sorghum. Journal of the Institute of Brewing 111(2): 190-196.

Marais, G.J. & M.J. Wingfield. 2001. Ophiostoma africanum sp. nov., and a key to ophiostomatoid species from Protea infructescences. Mycological Research 105 (2): 240-246.

Marais, G.J. 2000. Fungi and mycotoxins in pig feed. Porcus 15 (6): 10-15.

Stander, M.A., P.S. Steyn, A. Lübben, A. Miljkovic, P.G. Mantle & G.J. Marais. 2000. Influence of halogen salts on the production of the ochratoxins by Aspergillus ochraceus Wilh. Journal of Agricultural and Food Chemistry 48 (5): 1865-1871.

Marais, G.J. April/May 2000. The effect of fungi and mycotoxins in humans and animals in the RSA. VETMED 13 (2): 13-17.

Marais, G.J. 2000. Fungi and mycotoxins in food and feed in the RSA. AFMA Matrix, March 2000, 27-29.

Marais, G.J., M.J. Wingfield, C.D. Viljoen & B.D. Wingfield. 1998. A new ophiostomatoid genus from Protea infructescences. Mycologia 90: 136-142.

Marais, G.J. 1997. Mycotoxins in poultry feed in South Africa. Poultry Bulletin August 1997, pp. 376-378.

Rabie, C.J., A. Lubben, G.J. Marais & H. Jansen van Vuuren. 1997. Enumeration of fungi in barley. International Journal of Food Microbiology 35: 117-127.

Marais, G.J. & M.J. Wingfield. 1997. Ophiostoma protearum sp. nov. associated with Protea caffra infructescences. Canadian Journal of Botany 75: 362-367.

Rabie, C., A. Lubben, G.J. Marais & H. Jansen van Vuuren. 1996. Evaluation of grain and grain products for toxigenic fungi and mycotoxins. pp. 32-37. In: Grain Quality Assessment Ed. P.G. Randall. Papers presented at the International Association of Cereal Science and Technology, Johannesburg.

Marais, G.J. & M.J. Wingfield. 1994. Fungi associated with infructescences of Protea species in South Africa, including a new species of Ophiostoma.

Research

The main focus of current research is on identifying the major diseases associated with pecan production in South Africa and finding ways of managing them.  This include seasonal field trips to the major pecan producing areas in South Africa, including Limpopo, Mpumalanga, KZN, Eastern Cape, Free State and Northern Cape provinces with regular farmers days and feed back sessions to the industry. 

Area(s) of Interest

Areas of interest include:

Food mycology

Mycotoxicology

Plant Pathology

Fungal metabolites and production

Courses Presented

PPLG26244 (Principals in Plant Pathology) - Fungal diseases, Bacterial diseases, Viral diseases, Abiotic stresses, Nematodes

PPLG3714 (Fungal diseases of plants) - semester course

MCBD6814 (Microbial diversity) - 5 day Mycology module for honours students

BLGY1643 (Biology) - 1 week Plant Pathology module for 1st years%3


FACULTY CONTACT

Faculty Manager: Velaphi Makgwahla
T: + 27 51 401 3199
E: makgwahlamvt@ufs.ac.za

Marketing Manager: Elfrieda Lötter
T: +27 51 401 2531
E: lottere@ufs.ac.za

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