Cytokinins as regulators of gene expression

摘要: Plant gene expression can be markedly altered in response to cytokinins, leading an increase or decrease the abundance of specific transcripts. Cytokinins control at transcriptional level as well posttranscriptionally. Their influence on transcript rapid but also includes long-term changes. The observed alterations are for most part quantitative, sometimes with only subtle differences and rarely include qualitative changes such a complete repression expression. Relatively small endogenous cytokinin concentration change steady-state mRNA levels genes. Cytokinin cell-type specific. Protein phosphorylation plays role transmission signal. cis-elements trans-acting factors have not yet been described. target genes frequently regulated by additional stimuli, light auxin. products play diverse biological processes, cell division, photosynthesis, chloroplast development, disease resistance nutrient metabolism. This spread reflects variety responses plants. isolated present valuable tools dissect signal transduction pathways understand functional mechanism this hormone. Rapid progress field will instrumental deeper insight molecular mechanisms activity.