Gene expression induced by physical impedance in maize roots

摘要: Two cDNA clones, pIIG1 and pIIG2, corresponding to mRNAs that accumulate in maize root tips subjected 10 min of physical impedance, were isolated by differential screening a library. The deduced proteins, based on DNA sequence analysis, have molecular masses 13 23 kDa for respectively. showed 97% similarity at the nucleic acid level cortical cell delineating protein (pZRP3) was also similar some bimodular proteins are developmentally or stress regulated other plant species. In situ localization expression cells control roots; however, after impedance treatment, accumulation increased greatly extended include procambial region. pIIG2 did not show with any identified gene known function, but bipartite nuclear targeting occurs its amino which indicates it may function nucleus. Thus, rapid specific roots response stress, these be responsible responses impedance.