Sun, J.*, Niu, Q.-W.*, Tarkowski, P., Zheng, B., Tarkowska, D., Sandberg, G., Chua, N.-H., and Zuo, J. (2003) The Arabidopsis AtIPT8/PGA22 gene encodes an isopentenyl transferase that is involved in de novo cytokinin biosynthesis. Plant Physiol. 131:167-176. (* These authors contributed equally)

Sun, J.*, Niu, Q.-W.*, Tarkowski, P., Zheng, B., Tarkowska, D., Sandberg, G., Chua, N.-H., and Zuo, J. (2003) The Arabidopsis AtIPT8/PGA22 gene encodes an isopentenyl transferase that is involved in de novo cytokinin biosynthesis. Plant Physiol. 131:167-176. (* These authors contributed equally)