Stem Canker on Cyclocarya paliurus Is Caused by Botryosphaeria dothidea

Cyclocarya paliurus, an important endangered plant in China, has considerable medicinal, timber, and horticultural value. However, little is known about diseases that affect its health. In recent years, stem canker diseases on C. paliurus have been observed frequently in newly established nurseries...

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Veröffentlicht in:Plant disease. - 1997. - 104(2020), 4 vom: 01. Apr., Seite 1032-1040
1. Verfasser: Zheng, Xiang-Rong (VerfasserIn)
Weitere Verfasser: Zhang, Mao-Jiao, Shang, Xu-Lan, Fang, Sheng-Zuo, Chen, Feng-Mao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Botryosphaeria dothidea Cyclocarya paliurus first report pathogen detection stem canker
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520 |a Cyclocarya paliurus, an important endangered plant in China, has considerable medicinal, timber, and horticultural value. However, little is known about diseases that affect its health. In recent years, stem canker diseases on C. paliurus have been observed frequently in newly established nurseries in Jiangsu Province, China. Symptomatic trees showed elliptical, sunken lesions on the bark, with internal discoloration, leading to enlarging cankers with delineated margins. Pathogenicity tests with fungi isolated from symptomatic samples reproduced typical canker symptoms on both detached branches and potted plants of C. paliurus. Moreover, conidia from pycnidia of isolate ZB-23 could also cause stem canker on C. paliurus. Through combined morphological observation and DNA sequences of ITS region, β-tubulin, and translation elongation factor 1-α genes, the pathogen was identified as Botryosphaeria dothidea. Multigene maximum likelihood and maximum parsimony phylogenetic analyses further supported the identification of the pathogen. To our knowledge, this is the first report of B. dothidea causing stem canker on C. paliurus in China 
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700 1 |a Chen, Feng-Mao  |e verfasserin  |4 aut 
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