Diaporthe actinidiicola:A Novel Species Causing Branch Canker or Dieback of Fruit Trees in Henan Province,China
作者单位：College of Plant ProtectionHenan Agricultural University
会议名称：《中国植物病理学会2023年学术年会》
会议日期：2023年
学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学]
摘 要：Pear(Pyrus),walnut(Juglans) and kiwifruit(Actinidia) are important cash crops in ***,symptoms of branch canker or dieback have been frequently observed in many orchards in Henan Province and result in high losses in fruit *** were collected for etiological isolation from three hosts during 2020 and *** this study,seven isolates were collected from branches of three hosts and identified as one novel species,based on morphological characteristics and phylogenetic analyses of the concatenated internal transcribed spacer of the ribosomal DNA(ITS),translation elongation factor 1-α(TEF),α-tubulin(TUB),histone(HIS) and calmodulin(CAL).We proposed the name Diaporthe actinidiicola and(completed Koch’s postulates to confirm *** range evaluation suggested that *** could infect all inoculated fruit trees pear,kiwifruit,walnut,apple(Malus) and peach(Prunus) and the isolates from different hosts were most virulent on the original *** study characterises a novel Diaporthe species from three different hosts in China and contributes useful data for practicable disease management.