The hemibiotrophic fungal pathogen Magnaporthe oryzae causes serious crop losses in rice. As phyllospheric microbes share a common habitat with this foliar pathogen, they can be deployed as the change-agents for engineering desired phyllospheric microbial communities to inhibit the disease progression. Comparative evaluation of a set of native microbes, when applied as foliar spray or soil drench was undertaken, showed significant interactive effects on the concentrations of chlorophyll a and b, and carotenoids. A significant enhancement was recorded in the activities of chitosanase, β-1,3-endoglucanase and β-1,4-endoglucanase (CMCase) in the disease challenged plants, as compared to healthy plants. Among the treatments, Bacillus sp. (B1) inoculation recorded lowest values of the activities of all three hydrolytic enzymes, while Bacillus sp. (B4) and Nostoc-Anabaena consortium (C1) led to 30–60% decreases, both as foliar and soil drench modes of application. Distinct changes in the abundances of eubacterial and phylum Cyanobacterial 16S rRNA gene copies, nifH and bacterial amoA illustrated the significance of foliar over the soil drench method. The nifH gene copies were significantly higher due to the foliar method of Calothrix sp. (C2) inoculation, and values were significantly at par values with both the soil drench application of B1 (Bacillus sp.) and C1 (Nostoc-Anabaena consortium) treatments. This study illustrates the significance of the root-shoot linkages in the effective biocontrol of these promising, indigenous microbes, applied as soil drench or foliar agents, which can be useful in abating the incidence of the fungal pathogen in an environment –friendly manner.

半营养性真菌病原体稻瘟病菌（Magnaporthe oryzae）在水稻中造成严重的农作物损失。由于叶球微生物与这种叶状病原体共有一个共同的栖息地，因此它们可以用作改变剂，以工程化所需的叶球微生物群落，从而抑制疾病的进展。当进行叶面喷洒或土壤浸湿时，对一组天然微生物进行了比较评估，结果显示它们对叶绿素a和b以及类胡萝卜素的浓度具有显着的相互作用。与健康植物相比，病害植物中的壳聚糖酶，β-1,3-内切葡聚糖酶和β-1,4-内切葡聚糖酶（CMCase）的活性显着增强。在治疗中，芽孢杆菌sp。（B1）接种记录了所有三种水解酶活性的最低值，而芽孢杆菌属。（B4）和Nostoc-Anabaena联合会（C1）导致了30-60％的减少，因为叶面和土壤淋湿的施用方式均如此。真细菌和门的丰富变化蓝细菌16S rRNA基因拷贝，nifH和细菌amoA说明了叶面灌溉比土壤淋灌法的重要性。该nifH基因副本显著走高，因叶面方法Calothrix SP。（C2）接种，且在B1（Bacillussp。）和C1（Nostoc-Anabaena财团）治疗。这项研究说明了根茎连接在有效地控制这些有前途的土著微生物方面的重要性，这些微生物可用作土壤浸湿剂或叶面剂，可用于以环境友好的方式减少真菌病原体的发生。