Fire blight, caused by plant pathogenic bacterium Erwinia amylovora, is one of the most important diseases of Rosaceae plants. Due to the lack of effective control measures, fire blight infections pose a recurrent threat on agricultural production worldwide. Recently, bacterial viruses, or bacteriophages, have been proposed as environmentally friendly natural antimicrobial agents for fire blight control. Here, we isolated a novel bacteriophage Hena1 with activity against E. amylovora. Further analysis revealed that Hena1 is a narrow-host-range lytic phage belonging to Myoviridae family. Its genome consists of a linear 148,842 bp dsDNA (48.42% GC content) encoding 240 ORFs and 23 tRNA genes. Based on virion structure and genomic composition, Hena1 was classified as a new species of bacteriophage subfamily Vequintavirinae. The comprehensive analysis of Hena1 genome may provide further insights into evolution of bacteriophages infecting plant pathogenic bacteria.

中文翻译：

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Hena1的分离和鉴定-一种新型的欧文氏支链淀粉噬菌体。

植物病原性细菌欧文氏小球藻引起的火疫病是蔷薇科植物最重要的疾病之一。由于缺乏有效的控制措施，火疫病感染对全球农业生产构成了反复威胁。近来，已提出细菌病毒或噬菌体作为用于控制火疫病的环境友好的天然抗菌剂。在这里，我们分离出了一种新型的噬菌体Hena1，它具有抗支链淀粉菌的活性。进一步的分析表明，Hena1是属于Myoviridae家族的狭窄宿主范围的噬菌体。它的基因组由线性的148,842 bp dsDNA（GC含量为48.42％）组成，编码240个ORF和23个tRNA基因。根据病毒体结构和基因组组成，Hena1被归类为噬菌体亚种Vequintavirinae的新种。