1. School of Life Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
2. Department of Biology, School of Science and Technology, Sefako Makgatho Health Science University, Pretoria 0204, South Africa
3. Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
4. Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39762, USA