Wheat blast caused by Magnaporthe oryzae pv. Triticum is an upcoming threat to wheat cultivation worldwide. The disease crossing over to wheat first gained attention in South America, with increasing interest coming from its more recent appearance in the big wheat-growing areas of Asia. The increasing economic relevance of the disease and the lack of genetic resistance in current wheat breeding material, besides fungicide resistance already present in fungal pathogen populations, highlighted the need to evaluate the potential of isotianil as an alternative plant protection measure. Isotianil is already registered in Asia for the protection of rice against M. oryzae, but because the agronomic practices and disease development of blast differ between rice and wheat, the efficacy of isotianil against wheat blast was hard to predict. Testing isotianil in the currently available formulations, applied either as seed treatment or soil drench, resulted in a significant reduction of disease severity. The efficacy was comparably high, on different wheat cultivars and using several fungal isolates with different degrees of virulence. Microscopic analyses revealed that isotianil treatment can prevent invasive growth of the pathogen. No phytotoxicity from isotianil treatment was observed on wheat plants. Importantly, isotianil not only protects wheat plants at the seedling stage but also on spikes thereby preventing losses due to this most severe disease syndrome. In summary, the results showed the high potential of isotianil to protect against wheat blast.

小麦爆炸引起的稻瘟病菌PV。小麦是全球小麦种植的即将到来的威胁。这种传播到小麦的病害在南美首先引起人们的关注，其最近在亚洲小麦大产区的出现引起了人们越来越多的兴趣。除真菌病原体种群中已经存在的抗真菌剂抗性外，当前小麦育种材料中与该病的经济相关性日益增强，以及缺乏基因抗性，这凸显了有必要评估异噻菌胺作为一种替代性植物保护措施的潜力。异噻菌胺已在亚洲注册，用于保护大米免受米曲霉的侵害。，但是由于稻米和小麦的农艺习惯和稻瘟病的发展不同，因此很难预测异麦草胺对小麦稻瘟病的功效。以种子处理或土壤浸湿的形式测试当前可用制剂中的异丁腈，可大大降低疾病的严重程度。在不同的小麦品种上以及使用几种具有不同毒力的真菌分离株，其功效都相当高。显微镜分析显示异丁腈治疗可以防止病原体的侵入性生长。在小麦植株上未观察到异噻菌胺处理的植物毒性。重要的是，异丁腈不仅在苗期保护小麦植物，而且在穗状花序也能保护小麦，从而防止由于这种最严重的疾病综合症而造成的损失。综上所述，