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首页> 外文期刊>RSC Advances >Identification of resistance to cobweb disease caused by Cladobotryum mycophilum in wild and cultivated strains of Agaricus bisporus and screening for bioactive botanicals
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Identification of resistance to cobweb disease caused by Cladobotryum mycophilum in wild and cultivated strains of Agaricus bisporus and screening for bioactive botanicals

机译：鉴定双歧姬松茸野生和栽培菌株对枝状支枝杆菌引起的蜘蛛网病的抗性并筛选生物活性植物药

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Outbreaks of cobweb disease are becoming increasingly prevalent globally, severely affecting the quality and yield of Agaricus bisporus . However, cobweb disease-resistant strains are rare, and little is known regarding the biocontrol management of the disease. Here, we isolated a pathogen from a severe outbreak of cobweb disease on A. bisporus in China and identified it as Cladobotryum mycophilum based on morphological characteristics, rDNA sequences, and pathogenicity tests. We then tested 30 A. bisporus strains for cobweb disease resistance by inoculating with C. mycophilum and evaluated the activity of different botanicals. We found that two wild strains of A. bisporus originating from the Tibetan Plateau in China were resistant to cobweb disease, and four commercial strains were susceptible. Yield comparisons of the inoculated and uninoculated strains of A. bisporus with C. mycophilum revealed yield losses of 6–38%. We found that seven botanicals could inhibit C. mycophilum growth in vitro , particularly Syzygium aromaticum , which exhibited the maximum inhibition (99.48%) and could thus be used for the further biocontrol of cobweb disease. Finally, we identified the bioactive chemical constituents present in S. aromaticum that could potentially be used as a treatment for C. mycophilum infection using Fourier transform infrared (FTIR) spectroscopy. These findings provide new germplasm resources for enhancing A. bisporus breeding and for the identification of botanicals for the biocontrol of cobweb disease.
机译：蜘蛛网疾病的爆发在全球范围内变得越来越普遍，严重影响了双孢蘑菇的质量和产量。然而，蜘蛛网抗病菌株很少，关于该疾病的生物防治方法知之甚少。在这里，我们从中国双孢曲霉的一次严重的蜘蛛网病暴发中分离出一种病原体，并根据形态特征，rDNA序列和致病性测试将其鉴定为克氏杆菌。然后，我们通过接种C. mycophilum来测试30种双孢曲霉菌株对蜘蛛网的抗药性，并评估了不同植物药的活性。我们发现来自中国青藏高原的两种野生双孢曲霉菌株对蜘蛛网病具有抗性，而四种商业菌株易感。接种和未接种双孢曲霉菌株与嗜酸C. mycophilum的产量比较，结果表明产量损失了6–38％。我们发现七种植物药可以抑制体外嗜酸支原体的生长，特别是芳香丁香，表现出最大的抑制作用（99.48％），因​​此可以用于进一步对蜘蛛网疾病进行生物防治。最后，我们确定了存在于芳香链霉菌中的生物活性化学成分，可以使用傅立叶变换红外（FTIR）光谱技术潜在地用于治疗嗜酸支原体感染。这些发现提供了新的种质资源，以增强双孢曲霉的繁殖，并鉴定出用于防治蜘蛛网疾病的植物药。

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