Diacylglycerol kinase (DGK) is recognized as the key enzyme of the lipid signaling pathway, which involves the transduction of messages from hormones, neurotransmitters, and immunologic and growth factors. Regarding their essential role in animal physiology, many plant biologists have predicted a similar enzymatic influence in plants. However, a small number of recent studies have revealed the complexity of the involvement of DGK genes in the modulation of plant growth, development, and adaptation in both biotic and abiotic stress conditions. Here, we describe recent discoveries on the role of DGK genes in the plants’ responses to biotic or abiotic stressors. Moreover, we discuss how DGK enzymes regulate plant cellular activities during the adaptation of plants to a readily changing environment. DGK is an enzyme that plays a pivotal role in plant lipid signaling, by catalyzing the phosphorylation of the diacylglycerol (DAG) to phosphatidic acid (PA), which is a crucial molecule in a plant’s metabolic network, leading to its response to various external stresses. DGK enzymes are the principal moderators of PA generation in plant cells; this consequently affects its derived products—hence, enabling their activities in lipid signaling networks and cell homeostasis. Thus, understanding the DGK operational mode and interactions between the production and accumulation of PA would constitute a significant advancement in investigating the mechanism of stress adaptation in plants.

中文翻译：

---

二酰基甘油激酶（DGK）在植物胁迫耐受性，生长和发育中的新兴作用

二酰基甘油激酶（DGK）被认为是脂质信号通路的关键酶，它涉及激素，神经递质以及免疫和生长因子的信息转导。关于它们在动物生理学中的重要作用，许多植物生物学家已经预测了植物中类似的酶促作用。但是，最近的少量研究表明，在生物和非生物胁迫条件下，DGK基因参与植物生长，发育和适应的调节都非常复杂。在这里，我们描述了DGK基因在植物对生物或非生物胁迫源的反应中的作用的最新发现。此外，我们讨论了在植物适应不断变化的环境的过程中DGK酶如何调节植物细胞的活性。DGK是一种酶，它通过催化二酰基甘油（DAG）磷酸化为磷脂酸（PA）来在植物脂质信号中发挥关键作用，这是植物代谢网络中的关键分子，导致其对各种外部胁迫的反应。DGK酶是植物细胞中PA生成的主要调节剂。因此，这会影响其衍生产品，从而使其在脂质信号网络和细胞体内平衡中发挥作用。因此，了解DGK的操作模式以及PA的产生和积累之间的相互作用将构成研究植物胁迫适应机制的重要进展。导致其对各种外部压力的反应。DGK酶是植物细胞中PA生成的主要调节剂。因此，这会影响其衍生产品，从而使其在脂质信号网络和细胞体内平衡中发挥作用。因此，了解DGK的操作模式以及PA的产生和积累之间的相互作用将构成研究植物胁迫适应机制的重要进展。导致其对各种外部压力的反应。DGK酶是植物细胞中PA生成的主要调节剂。因此，这会影响其衍生产品，从而使其在脂质信号网络和细胞体内平衡中发挥作用。因此，了解DGK的操作模式以及PA的产生和积累之间的相互作用将构成研究植物逆境适应机制的重要进展。