Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing 100081, China.
Int J Mol Sci. 2018 Nov 20;19(11):3656. doi: 10.3390/ijms19113656.
Roots are important plant ground organs, which absorb water and nutrients to control plant growth and development. Phytohormones have been known to play a crucial role in the regulation of root growth, such as auxin and ethylene, which are central regulators of this process. Recent findings have revealed that root development and elongation regulated by ethylene are auxin dependent through alterations of auxin biosynthesis, transport and signaling. In this review, we focus on the recent advances in the study of auxin and auxin⁻ethylene crosstalk in plant root development, demonstrating that auxin and ethylene act synergistically to control primary root and root hair growth, but function antagonistically in lateral root formation. Moreover, ethylene modulates auxin biosynthesis, transport and signaling to fine-tune root growth and development. Thus, this review steps up the understanding of the regulation of auxin and ethylene in root growth.
根是植物重要的地下器官，它可以吸收水分和养分，从而控制植物的生长和发育。人们已经知道植物激素在调节根生长中起着关键作用，例如生长素和乙烯，它们是这一过程的核心调节剂。最近的研究发现，乙烯通过改变生长素的生物合成、运输和信号转导来调节根的发育和伸长，这依赖于生长素。在这篇综述中，我们重点介绍了生长素和生长素-乙烯互作对植物根发育的研究进展，表明生长素和乙烯协同作用控制主根和根毛的生长，但在侧根形成中起拮抗作用。此外，乙烯调节生长素的生物合成、运输和信号转导，以精细调控根的生长和发育。因此，本综述增进了对生长素和乙烯在根生长中的调控作用的理解。
