1. MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences; Lanzhou University, Lanzhou; Gansu 730000 China
2. Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research; Institute of Experimental Botany AS CR and Palacký University; Šlechtitelů 27 CZ-78371 Olomouc Czech Republic
3. Mendel Centre for Plant Genomics and Proteomics; Central European Institute of Technology (CEITEC), Masaryk University; Kamenice 5 CZ-625 00 Brno Czech Republic
4. Institute of Science and Technology (IST) Austria; Am Campus 1 3400 Klosterneuburg Austria
5. School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology; The Chinese University of Hong Kong, Shatin, New Territories; Hong Kong