1. Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei, P.R. China ;
2. Microelement Research Center/Hubei Provincial Engineering Laboratory for New Fertilizers/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Huazhong Agricultural University, Wuhan, Hubei, P.R. China
3. Indian Council of Agricultural Research-Central Citrus Research Institute, Nagpur, Maharashtra, India
4. Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, P.R. China