【摘 要】
：
从辣椒根际土壤中分离出的对辣椒疫霉菌(Phytophthora capsici)有强烈抑制作用的芽孢杆菌Bn-130菌株,温室控病试验表明,菌液处理8d以内再接种病原菌,Bn-130对辣椒疫病控病效
【机 构】
：
西南大学植物保护学院,四川省烟草公司达州市分公司,
论文部分内容阅读
从辣椒根际土壤中分离出的对辣椒疫霉菌(Phytophthora capsici)有强烈抑制作用的芽孢杆菌Bn-130菌株,温室控病试验表明,菌液处理8d以内再接种病原菌,Bn-130对辣椒疫病控病效果均在60%以上,能显著降低辣椒疫病的发病率.菌液可诱导寄主抗性相关酶的变化,实验检测表明经芽孢杆菌Bn-130菌液处理的辣椒,其体内多酚氧化酶(PPO)、过氧化物酶(POD)、苯丙氨酸解氨酶(PAL)活性均有不同程度的提高,表明菌株Bn-130能激发寄主产生诱导抗病性.
Bacillus subtilis Bn-130 strain isolated from rhizosphere soil of pepper has a strong inhibitory effect on Phytophthora capsici. The greenhouse disease control test showed that the pathogen was inoculated within 8 days after treatment with Bacillus subtilis Bn-130, The control effects were above 60%, which could significantly reduce the incidence of pepper blight.The bacterial liquid could induce the changes of the host-resistance-related enzymes. The experimental results showed that the polyphenol oxidation in vivo was inhibited by Bacillus sp. Bn-130 The activity of PPO, POD and PAL increased to some extent, indicating that strain Bn-130 can stimulate the host to induce disease resistance.
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