Comparative genomics of Physcomitrella patens gametophytic transcriptome and Arabidopsis thaliana: implication for land plant evolution.
Nishiyama T, Fujita T, Shin-I T, Seki M, Nishide H, Uchiyama I, Kamiya A, Carninci P, Hayashizaki Y, Shinozaki K, et al. Proc Natl Acad Sci U S A. 2003 Jun 24; 100(13):8007-12. Epub 2003 Jun 13.