Abstract Phytophthora capsici is a pathogenic oomycete that affects pepper cultivation and other commercial products, causing serious economic losses. Here, Bacillus licheniformis strain BL06 effectively reduced pepper Phytophthora blight severity. BL06 suppressed P. capsici mycelium growth by 70% in dual culture tests and induced excessive branching and significant lysis of P. capsici hyphae. The BL06 bacterial culture also inhibited in vitro sporangia development in a dose-dependent manner. Moreover, BL06 inhibited motility and displayed lytic activities against zoospores of P. capsici in a dose- and time-dependent manner. Indeed, the P. capsici infectiousness was reduced in host tissue treated by BL06, which is possibly associated with its ability to inhibit zoospore germination and germ tube growth in host tissues. Collectively, our results demonstrate the utility B. licheniformis BL06 as a potential biocontrol agent for the management of Phytophthora blight of peppers.

中文翻译：

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地衣芽孢杆菌BL06多种作用方式对辣椒中辣椒疫霉的抑制作用

摘要 辣椒疫霉(Phytophthora capsici)是一种病原性卵菌，影响辣椒种植和其他商品化生产，造成严重的经济损失。在这里，地衣芽孢杆菌菌株 BL06 有效降低了辣椒疫霉病的严重程度。在双重培养试验中，BL06 抑制了辣椒疫霉菌丝体的生长 70%，并诱导了辣椒疫霉菌丝的过度分枝和显着裂解。BL06 细菌培养物还以剂量依赖性方式抑制体外孢子囊的发育。此外，BL06 以剂量和时间依赖的方式抑制运动并显示出对辣椒游动孢子的溶解活性。事实上，BL06 处理的宿主组织中辣椒的感染性降低，这可能与其抑制宿主组织中游动孢子萌发和胚管生长的能力有关。总的来说，