Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708 PB, Wageningen, the Netherlands.
Department of Biology, University of Fribourg, Chemin du musée 10, CH-1700, Fribourg, Switzerland.
New Phytol. 2020 Apr;226(1):32-43. doi: 10.1111/nph.16282. Epub 2019 Nov 27.
Like most other eukaryotes, plants do not live alone but in close association with a diverse microflora. These plant-associated microbes contribute to plant health in many different ways, ranging from modulation of hormonal pathways to direct antibiosis of plant pathogens. Over the last 15 yr, the importance of volatile organic compounds as mediators of mutualistic interactions between plant-associated bacteria and their hosts has become evident. This review summarizes current knowledge concerning bacterial volatile-mediated plant protection against abiotic and biotic stresses. It then discusses the translational potential of such metabolites or of their emitters for sustainable crop protection, the possible ways to harness this potential, and the major challenges still preventing us from doing so. Finally, the review concludes with highlighting the most pressing scientific gaps that need to be filled in order to enable a better understanding of: the molecular mechanisms underlying the biosynthesis of bacterial volatiles; the complex regulation of bacterial volatile emission in natural communities; the perception of bacterial volatiles by plants; and the modes of actions of bacterial volatiles on their host.
与大多数其他真核生物一样，植物不是单独生存的，而是与多样化的微生物群落密切相关。这些与植物相关的微生物通过多种方式促进植物健康，从调节激素途径到直接抑制植物病原体的抗菌作用。在过去的 15 年中，挥发性有机化合物作为植物相关细菌与其宿主之间共生相互作用的介质的重要性已经显而易见。本综述总结了目前关于细菌挥发性介导的植物对非生物和生物胁迫的保护的知识。然后，它讨论了这些代谢物或它们的发射体在可持续作物保护方面的转化潜力、利用这种潜力的可能途径，以及仍然阻止我们这样做的主要挑战。最后，该综述总结了突出的最紧迫的科学差距，需要填补这些差距，以便更好地理解：细菌挥发物生物合成的分子机制；自然群落中细菌挥发物排放的复杂调节；植物对细菌挥发物的感知；以及细菌挥发物对其宿主的作用模式。
