文献类型：期刊文献

英文题名：Identification and characterization of nectria pseudotrichia associated with camellia canker disease in china

作者：Geng, Xiansheng[1] Liu, Ying[1] Li, Jiyuan[1] Li, Zhihong[1] Shu, Jinping[1] Wu, Guiyang[2]

第一作者：耿显胜

机构：[1] Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; [2] Agricultural Technology Service Station of Fenghua City, Ningbo, 315502, China

年份：2022

卷号：13

期号：1

外文期刊名：Forests

收录：EI(收录号：20220111415234);Scopus(收录号：2-s2.0-85121968364)

语种：英文

外文关键词：Plants (botany) - Tissue - Forestry

摘要：Camellia japonica is a native tree species with high economic value that is widely cultivated in southern China. In recent years, canker disease has been observed in camellia plantations in Zhejiang Province, China, with the disease incidence rate in some plantations exceeding 20%. Canker disease severely affects the trunks and branches of C. japonica in China, but the causal agent has not yet been identified. In this study, the pathogen was isolated from infected C. japonica tissues through a conventional tissue isolation approach. Species identification was conducted using morphological methods combined with multilocus phylogenetic analysis. Pathogenicity was tested based on Koch’s postulates. The results showed that the pathogen could be isolated from the diseased bark of C. japonica ‘Hongluzhen’. The pathogen was identified as Nectria pseudotrichia based on morphological, cultural, and molecular traits. The inoculation of the pathogen into C. japonica ‘Hongluzhen’ caused necrotic lesions on healthy seedlings, and the fungus N. pseudotrichia could be re-isolated from such lesions. Therefore, N. pseudotrichia is the causal agent of canker disease affecting C. japonica in China. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland.