Podosphaera xanthii causing powdery mildew on Impatiens balsamina in China

IF 1.5 4区农林科学 Q3 PLANT SCIENCES

Canadian Journal of Plant Pathology Pub Date : 2021-11-29 DOI:10.1080/07060661.2021.2011421

Mo Zhu, Xiao Duan, Qianqian Zeng, P. Cai, Wenqi Shi, Z. Qiu

引用次数: 3

Abstract

Abstract Impatiens balsamina (garden balsam) is an annual herb and widely grown for ornamental and medicinal use in China. In 2020 and 2021, powdery mildew symptoms were found on I. balsamina in Xinxiang City, Henan Province, China. The pathogenic fungus was identified based on its morphological characteristics and molecular analysis. The internal transcribed spacer (ITS) region was amplified and sequenced. The sequence obtained for the fungus showed 100% identity with the previously reported Podosphaera xanthii. The virulence of the pathogen on I. balsamina was confirmed by utilizing Koch’s postulates. Therefore, we identified the causal organism of this disease as P. xanthii. This is the first report of powdery mildew caused by P. xanthii on I. balsamina in China. The identification of P. xanthii on I. balsamina will support efforts towards its future control and management.

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在凤仙花上引起白粉病的黄氏水蛭

凤仙花(Impatiens balsamina)是一种一年生草本植物，在中国广泛种植用于观赏和药用。2020年和2021年，中国河南省新乡市凤仙花出现白粉病症状。根据病原菌的形态特征和分子分析对其进行了鉴定。对内部转录间隔区(ITS)进行扩增和测序。该真菌的序列与已有报道的Podosphaera xanthii同源性为100%。利用科赫的假设，证实了病原菌对凤仙花的毒力。因此，我们确定该疾病的致病菌为P. xanthii。这是国内首次报道由苍耳杆菌引起的香菇白粉病。凤仙花上苍耳菌的鉴定将为今后凤仙花的防治和管理提供依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Canadian Journal of Plant Pathology 生物-植物科学

CiteScore

4.50

自引率

5.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Canadian Journal of Plant Pathology is an international journal which publishes the results of scientific research and other information relevant to the discipline of plant pathology as review papers, research articles, notes and disease reports. Papers may be submitted in English or French and are subject to peer review. Research articles and notes include original research that contributes to the science of plant pathology or to the practice of plant pathology, including the diagnosis, estimation, prevention, and control of plant diseases. Notes are generally shorter in length and include more concise research results. Disease reports are brief, previously unpublished accounts of diseases occurring on a new host or geographic region. Review papers include mini-reviews, descriptions of emerging technologies, and full reviews on a topic of interest to readers, including symposium papers. These papers will be highlighted in each issue of the journal and require prior discussion with the Editor-in-Chief prior to submission.