Takahashi Taku
Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
Plants (Basel). 2020 Apr 16;9(4):511. doi: 10.3390/plants9040511.
Polyamines are small organic compounds found in all living organisms. According to the high degree of positive charge at physiological pH, they interact with negatively charged macromolecules, such as DNA, RNA, and proteins, and modulate their activities. In plants, polyamines, some of which are presented as a conjugated form with cinnamic acids and proteins, are involved in a variety of physiological processes. In recent years, the study of plant polyamines, such as their biosynthetic and catabolic pathways and the roles they play in cellular processes, has flourished, becoming an exciting field of research. There is accumulating evidence that polyamine oxidation, the main catabolic pathway of polyamines, may have a potential role as a source of hydrogen peroxide. The papers in this Special Issue highlight new discoveries and research in the field of plant polyamine biology. The information will help to stimulate further research and make readers aware of the link between their own work and topics related to polyamines.
多胺是存在于所有生物体内的小分子有机化合物。根据其在生理pH值下的高正电荷程度，它们与带负电荷的大分子相互作用，如DNA、RNA和蛋白质，并调节其活性。在植物中，多胺（其中一些以与肉桂酸和蛋白质的共轭形式存在）参与多种生理过程。近年来，对植物多胺的研究蓬勃发展，包括其生物合成和分解代谢途径以及它们在细胞过程中所起的作用，成为一个令人兴奋的研究领域。越来越多的证据表明，多胺氧化作为多胺的主要分解代谢途径，可能具有作为过氧化氢来源的潜在作用。本期特刊中的论文突出了植物多胺生物学领域的新发现和研究。这些信息将有助于激发进一步的研究，并使读者意识到他们自己的工作与多胺相关主题之间的联系。
