Expression Analysis of Segmentally Duplicated ZmMPK3-1 and ZmMPK3-2 genes in Maize

Gene duplication and alternative splicing (AS) are two evolutionary mechanisms that can increase functional diversification of genes. Here, we found that a previously uncharacterized ZmMPK4 (ZmMPK3-1b in this research) is a splicing variant. ZmMPK3-1 can undergo AS by retaining the third intron (90 nucleotides) to generate an atypical mitogen-activated… CONTINUE READING