PDF(Pubmed)
Abstract：
The high phenotypic plasticity developed by plants includes rapid responses and adaptations to aggressive or changing environments. To achieve this, they evolved extremely efficient mechanisms of signaling mediated by a wide range of molecules, including small signal molecules. Among them, hydrogen cyanide (HCN) has been largely ignored due to its toxic characteristics. However, not only is it present in living organisms, but it has been shown that it serves several functions in all kingdoms of life. Research using model plants has changed the traditional point of view, and it has been demonstrated that HCN plays a positive role in the plant response to pathogens independently of its toxicity. Indeed, HCN induces a response aimed at protecting the plant from pathogen attack, and the HCN is provided either exogenously (in vitro or by some cyanogenic bacteria species present in the rhizosphere) or endogenously (in reactions involving ethylene, camalexin, or other cyanide-containing compounds). The contribution of different mechanisms to HCN function, including a new post-translational modification of cysteines in proteins, namely S-cyanylation, is discussed here. This work opens up an expanding \'HCN field\' of research related to plants and other organisms.
摘要：
植物开发的高表型可塑性包括对侵袭性或变化环境的快速反应和适应。为了实现这一点，他们进化出了由广泛分子介导的非常有效的信号传导机制，包括小信号分子。其中,氰化氢由于其毒性特性在很大程度上被忽略。然而,它不仅存在于生物体中，但是已经证明，它在所有生活王国中都有多种功能。使用模型植物的研究改变了传统的观点，并且已经证明氰化氢在植物对病原体的反应中起着积极的作用，而与其毒性无关。的确,氰化氢诱导反应旨在保护植物免受病原体攻击，氰化氢是外源提供的（体外或根际中存在的一些生氰细菌），或内源性(在涉及乙烯的反应中，camalexin或其他含氰化物的化合物)。不同机制对HCN功能的贡献，包括蛋白质中半胱氨酸的新翻译后修饰，S-氰化,在这里讨论。这项工作打开了与植物和其他生物相关的研究的不断扩大的“HCN领域”。
