Cytokinin-Controlled Gradient Distribution of Auxin in Arabidopsis Root Tip.
The plant root is a dynamic system, which is able to respond promptly to external environmental stimuli by constantly adjusting its growth and development. A key component regulating this growth and development is the finely tuned cross-talk between the auxin and cytokinin phytohormones. The gradient distribution of auxin is not only important for the growth and development of roots, but also for root growth in various response. Recent studies have shed light on the molecular mechanisms of cytokinin-mediated regulation of local auxin biosynthesis/metabolism and redistribution in establishing active auxin gradients, resulting in cell division and differentiation in primary root tips. In this review, we focus our attention on the molecular mechanisms underlying the cytokinin-controlled auxin gradient in root tips.
['Wu|Lei|L|0000-0002-1067-3095', 'Wang|Jun-Li|JL|', 'Li|Xiao-Feng|XF|', 'Guo|Guang-Qin|GQ|']
D017360:Arabidopsis D001692:Biological Transport D053898:Biosynthetic Pathways D002454:Cell Differentiation D003583:Cytokinins D007210:Indoleacetic Acids D063245:Plant Development D018517:Plant Roots D011485:Protein Binding D059748:Proteolysis D015398:Signal Transduction
auxin cytokinin biosynthesis/metabolism cell division auxin transport cell differentiation root meristem