Schikora Adam, Schenk Sebastian T, Hartmann Anton
Julius Kühn-Institut, Federal Research Centre for Cultivated Plants (JKI), Institute for Epidemiology and Pathogen Diagnostics, Messeweg 11/12, 38104, Brunswick, Germany.
Institute of Plant Sciences - Paris-Saclay, INRA/CNRS, 630 rue de Noetzlin, Plateau du Moulon, 91405, Orsay, France.
Plant Mol Biol. 2016 Apr;90(6):605-12. doi: 10.1007/s11103-016-0457-8. Epub 2016 Feb 22.
Bacterial quorum sensing (QS) mechanisms play a crucial role in the proper performance and ecological fitness of bacterial populations. Many key physiological processes are regulated in a QS-dependent manner by auto-inducers, like the N-acyl homoserine lactones (AHLs) in numerous Gram-negative bacteria. In addition, also the interaction between bacteria and eukaryotic hosts can be regulated by AHLs. Those mechanisms gained much attention, because of the positive effects of different AHL molecules on plants. This positive impact ranges from growth promotion to induced resistance and is quite contrasting to the rather negative effects observed in the interactions between bacterial AHL molecules and animals. Only very recently, we began to understand the molecular mechanisms underpinning plant responses to AHL molecules. In this review, we gathered the latest information in this research field. The first part gives an overview of the bacterial aspects of quorum sensing. Later we focus on the impact of AHLs on plant growth and AHL-priming, as one of the most understood phenomena in respect to the inter-kingdom interactions based on AHL-quorum sensing molecules. Finally, we discuss the potential benefits of the understanding of bacteria-plant interaction for the future agricultural applications.
细菌群体感应（QS）机制在细菌群体的正常功能和生态适应性方面发挥着关键作用。许多关键的生理过程由自诱导物以群体感应依赖的方式进行调节，例如众多革兰氏阴性菌中的N-酰基高丝氨酸内酯（AHLs）。此外，细菌与真核宿主之间的相互作用也可由AHLs调节。由于不同的AHL分子对植物具有积极作用，这些机制备受关注。这种积极影响涵盖从促进生长到诱导抗性，这与在细菌AHL分子与动物相互作用中观察到的相当负面的影响形成鲜明对比。直到最近，我们才开始了解植物对AHL分子作出反应的分子机制。在这篇综述中，我们收集了该研究领域的最新信息。第一部分概述了群体感应的细菌方面。随后，我们重点关注AHLs对植物生长的影响以及AHL引发作用，这是基于AHL群体感应分子的跨物种相互作用中最被理解的现象之一。最后，我们讨论了理解细菌 - 植物相互作用对未来农业应用的潜在益处。
