State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, China.
J Integr Plant Biol. 2021 Jan;63(1):228-243. doi: 10.1111/jipb.12972. Epub 2020 Jun 24.
Plant cells have a powerful capacity in their propagation to adapt to environmental change, given that a single plant cell can give rise to a whole plant via somatic embryogenesis without the need for fertilization. The reprogramming of somatic cells into totipotent cells is a critical step in somatic embryogenesis. This process can be induced by stimuli such as plant hormones, transcriptional regulators and stress. Here, we review current knowledge on how the identity of totipotent cells is determined and the stimuli required for reprogramming of somatic cells into totipotent cells. We highlight key molecular regulators and associated networks that control cell fate transition from somatic to totipotent cells. Finally, we pose several outstanding questions that should be addressed to enhance our understanding of the mechanisms underlying plant cell totipotency.
植物细胞具有强大的繁殖能力，能够适应环境变化。事实上，单个植物细胞可以通过体细胞胚胎发生而无需受精，就可以产生整个植物。体细胞重编程为全能细胞是体细胞胚胎发生的关键步骤。这个过程可以通过植物激素、转录调节剂和应激等刺激来诱导。在这里，我们综述了目前关于全能细胞身份确定以及体细胞重编程为全能细胞所需刺激的知识。我们强调了控制体细胞向全能细胞命运转变的关键分子调节剂和相关网络。最后，我们提出了几个应该解决的突出问题，以增强我们对植物细胞全能性机制的理解。
