Rashid Md Harun-Or, Chung Young R
Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea.
Front Plant Sci. 2017 Oct 20;8:1816. doi: 10.3389/fpls.2017.01816. eCollection 2017.
Soil microorganisms with growth-promoting activities in plants, including rhizobacteria and rhizofungi, can improve plant health in a variety of different ways. These beneficial microbes may confer broad-spectrum resistance to insect herbivores. Here, we provide evidence that beneficial microbes modulate plant defenses against insect herbivores. Beneficial soil microorganisms can regulate hormone signaling including the jasmonic acid, ethylene and salicylic acid pathways, thereby leading to gene expression, biosynthesis of secondary metabolites, plant defensive proteins and different enzymes and volatile compounds, that may induce defenses against leaf-chewing as well as phloem-feeding insects. In this review, we discuss how beneficial microbes trigger induced systemic resistance against insects by promoting plant growth and highlight changes in plant molecular mechanisms and biochemical profiles.
具有促进植物生长活性的土壤微生物，包括根际细菌和根际真菌，可以通过多种不同方式改善植物健康。这些有益微生物可能赋予植物对昆虫食草动物的广谱抗性。在此，我们提供证据表明有益微生物可调节植物对昆虫食草动物的防御。有益土壤微生物可调节包括茉莉酸、乙烯和水杨酸途径在内的激素信号传导，从而导致基因表达、次生代谢产物生物合成、植物防御蛋白以及不同的酶和挥发性化合物，这些可能诱导对咀嚼式口器以及吸食韧皮部汁液昆虫的防御。在本综述中，我们讨论有益微生物如何通过促进植物生长触发对昆虫的诱导系统抗性，并强调植物分子机制和生化特征的变化。
