1Department of Botany, University of Agriculture, Faisalabad-38040, Pakistan
2Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad-38040, Pakistan
3Cologne Biocenter, Institute of Botany, University of Cologne, Cologne, Germany
4Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Beijing-100193, China
5Soil and Plant Nutrient Unit, Brunei Agricultural Research Centre, BG 1121, Brunei Darussalam