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首页> 外文期刊>American journal of applied sciences >Morphological Characteristics and Pathogenicity of Synchytrium psophocarpi (Rac.) Baumann Associated With False Rust on Winged Bean | Science Publications
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Morphological Characteristics and Pathogenicity of Synchytrium psophocarpi (Rac.) Baumann Associated With False Rust on Winged Bean | Science Publications

机译：四棱豆假单胞菌鲍曼与假锈病的形态特征和致病性科学出版物

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> Problem statement: Winged bean (Psophocarpus tetragonolobus L.) is an important tropical legume in countries like Malaysia due to its potential as a high protein value crop. However, bright-orange pustules observed on the veins of young leaves, stems, pods and sepals depict symptoms of false rust disease on beans. The causal agent of this disease has been found to be Synchytrium psophocarpi. Currently, there is no published literature of this or other related species in Malaysia. Thus, there is a very serious lack of knowledge on the taxonomic characterization and pathogenicity of the local fungus. Therefore, there is an important need for this microorganism to be documented. Approach: This study was reported based from samples obtained from infected winged bean plants found in the fields around the University Putra Malaysia campus in Serdang, Selangor, Malaysia. The morphological characteristics were studied using dark field and scanning electron microscope. Meanwhile, pathogenicity test was carried out using two methods which were moist chamber and on Petri dish. Results: The sporangia were spherical to ovoid in shape and approximately 20.69 μm in diameter. The average diameter for spore measured was 2.02 μm and the flagella were 10.75 μm in length. Positive disease development with false rust disease symptoms was observed in both methods of inoculation practiced. It confirmed the pathogenicity of the fungus as the causal pathogen with the appearance of clear disease symptoms. Conclusion: This research finding is the first detailed report for Synchytrium psophocarpi associated with false rust disease of winged bean in Malaysia. It described the morphology, zoospore production and pathogenicity of the causal fungal organism. This information would be very useful for the studies involving this pathogen in future.
机译： > 问题陈述：四棱豆（ Psophocarpus tetragonolobus L.）是马来西亚等国家的重要热带豆类，因为它具有很高的蛋白质价值作物。然而，在嫩叶，茎，豆荚和萼片的静脉上观察到的鲜橙色脓疱表现出豆类假锈病的症状。已经发现该疾病的病因是 Syncotrium psophocarpi 。目前，马来西亚没有有关该物种或其他相关物种的公开文献。因此，非常缺乏关于本地真菌的分类学特征和致病性的知识。因此，非常需要记录该微生物。 方法：这项研究是根据在马来西亚雪兰莪Serdang的University Putra Malaysia校园周围田间发现的被感染的有翅豆植物中提取的样品报告的。使用暗场和扫描电子显微镜研究了形态特征。同时，用湿室法和培养皿法两种方法进行了致病性试验。 结果：孢子囊呈球形至卵形，直径约20.69μm。测得的孢子平均直径为2.02μm，鞭毛的长度为10.75μm。在两种接种方法中均观察到有假锈病症状的阳性疾病发展。它证实了真菌作为致病性病原体的致病性，并表现出明显的疾病症状。 结论：该研究结果是有关马来西亚i.Synchytrium psophocarpi 与四棱豆假锈病相关的第一份详细报告。它描述了因果真菌生物的形态，游动孢子产生和致病性。该信息对于将来涉及该病原体的研究将非常有用。

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