Acknowledgements
The authors thank Buffelskloof Private Nature Reserve, more specifically Mr John Burrows, for providing them with access to the research site, and to Mpumalanga Tourism and Parks Agency for permits to collect plant material. A special thanks to Mandy Messal and Laura Milne for their help during the collection and processing of samples collected. The authors would also like to thank the Tree Protection Co-operative Program (TPCP), the centre of excellence in plant health and biotechnology (CPHB) and the South African National Research Foundation (Grant numbers 98889 and 116333) for funding this research.