Department of Biology, Health and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain.
Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain.
Int J Mol Sci. 2024 Jul 3;25(13):7308. doi: 10.3390/ijms25137308.
Plants, like many other living organisms, have an internal timekeeper, the circadian clock, which allows them to anticipate photoperiod rhythms and environmental stimuli to optimally adjust plant growth, development, and fitness. These fine-tuned processes depend on the interaction between environmental signals and the internal interactive metabolic network regulated by the circadian clock. Although primary metabolites have received significant attention, the impact of the circadian clock on secondary metabolites remains less explored. Transcriptome analyses revealed that many genes involved in secondary metabolite biosynthesis exhibit diurnal expression patterns, potentially enhancing stress tolerance. Understanding the interaction mechanisms between the circadian clock and secondary metabolites, including plant defense mechanisms against stress, may facilitate the development of stress-resilient crops and enhance targeted management practices that integrate circadian agricultural strategies, particularly in the face of climate change. In this review, we will delve into the molecular mechanisms underlying circadian rhythms of phenolic compounds, terpenoids, and N-containing compounds.
植物与许多其他生物一样，具有内部生物钟，即昼夜节律钟，使它们能够预测光周期节律和环境刺激，从而优化植物的生长、发育和适应性。这些精细调节的过程取决于环境信号与昼夜节律钟调节的内部交互代谢网络之间的相互作用。尽管初级代谢物受到了广泛关注，但昼夜节律钟对次生代谢物的影响仍较少被探索。转录组分析表明，许多参与次生代谢物生物合成的基因表现出昼夜表达模式，这可能增强了植物对胁迫的耐受性。了解昼夜节律钟与次生代谢物之间的相互作用机制，包括植物对胁迫的防御机制，可能有助于培育抗胁迫作物，并加强针对昼夜农业策略的管理实践，特别是在应对气候变化方面。在这篇综述中，我们将深入探讨酚类化合物、萜类化合物和含氮化合物的昼夜节律的分子机制。
