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 gradien...

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Bibliographic Details
Published in:International journal of molecular sciences 2021-04, Vol.22 (8), p.3874
Main Authors: Wu, Lei, Wang, Jun-Li, Li, Xiao-Feng, Guo, Guang-Qin
Format: Article
Language:English
Subjects:
auxin
auxin transport
Biosynthesis
biosynthesis/metabolism
Cell differentiation
Cell division
Crosstalk
cytokinin
Cytokinins
Environmental effects
Enzymes
Gene expression
Kinases
Metabolism
Molecular modelling
Plant roots
Proteins
Review
Signal transduction
Tips
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Summary: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.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms22083874