Identification of a HyperparasiticSimplicillium obclavatumStrain Affecting the Infection Dynamics ofPuccinia striiformisf. sp.triticion Wheat
Identification of a HyperparasiticSimplicillium obclavatumStrain Affecting the Infection Dynamics ofPuccinia striiformisf. sp.triticion Wheat
复制标题
影响条锈菌 f 感染动态的超寄生 Simplicillium obclavatum 菌株的鉴定。
DOI：
10.3389/fmicb.2020.01277
复制
发表时间：
2020-06-24
影响因子：
5.2
通讯作者：
Wang, Xiaojie
中科院分区：
文献类型：
--
作者：
Wang, Ning;Fan, Xin;Wang, Xiaojie
小麦条锈病是由小麦条锈菌（Pucciniastriiformis f.）小麦赤霉病（Pst）是世界范围内小麦生产的最严重威胁之一。Pst毒力的变化可能会规避小麦品种的抗性，杀菌剂的使用可能会引起环境问题。Pst的寄生虫可用于开发用于环境友好控制这种真菌疾病的生物制剂。本文报道了一种从Pst中分离的重寄生真菌，并通过分子生物学和形态学特征鉴定为钝棒单孢菌（Simplicillium obclavatum）。我们证明，接种Pst感染的小麦叶片与S。obclavatum降低了Pst夏孢子的产生和萌发率。因此，S. obclavatum具有开发成为小麦条锈病生物防治剂的潜力。
Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most serious threats to wheat production worldwide. Changes of Pst virulence may circumvent resistance in wheat varieties, and application of fungicides may cause environmental problems. Parasites of Pst can be used to develop biological agents for environmentally friendly control of this fungal disease. Here, we report a hyperparasitic fungus isolated from Pst and identified it as Simplicillium obclavatum through molecular and morphological characterizations. We demonstrated that inoculation of Pst-infected wheat leaves with S. obclavatum reduced the production and germination rate of Pst urediniospores. Therefore, S. obclavatum has the potential to be developed into a biological control agent for managing wheat stripe rust.