Botryosphaeria dothidea causes stem canker of Idesia polycarpa in China

IF 2.3 3区农林科学 Q1 AGRONOMY Plant Pathology Pub Date : 2024-03-23 DOI:10.1111/ppa.13895

Lisha Fang, Tianjiao Zheng, Jian Feng, Wenyan Zhi, Yanmei Wang, Zhi Li, Qifei Cai, Xiaodong Geng, Zhen Liu

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Abstract

Idesia polycarpa is a woody oil plant with great development and application prospects. However, stem canker disease of I. polycarpa was frequently observed in Henan and Hubei provinces of China in 2020–2022. The seriousness of the disease caused a large number of trees deaths, which affected seedling production and fruit yield, restricting the development of the I. polycarpa industry. We performed isolation, purification and pathogenicity analysis of canker samples. Pathogenicity tests reproduced typical canker disease symptoms on detached branches of I. polycarpa. Based on morphological observations, conidial morphology and phylogenetic analysis of isolates with high similarity to the rDNA internal transcribed spacer (ITS), EF‐1α and TUB2 sequences screened in GenBank by BLAST, the pathogen of canker disease on I. polycarpa was identified as Botryosphaeria dothidea. This is the first report of B. dothidea as the pathogen of stem canker of I. polycarpa.

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Botryosphaeria dothidea 在中国引起多肉植物茎腐烂病

鸢尾是一种木本油料植物，具有广阔的开发和应用前景。然而，2020-2022 年，中国河南、湖北等省频繁发生油桐茎腐病。该病严重时造成大量苗木死亡，影响了苗木产量和果实产量，制约了鸢尾产业的发展。我们对腐烂病样本进行了分离、纯化和致病性分析。致病性试验再现了 I. polycarpa 分离枝条上典型的腐烂病症状。根据形态观察、分生孢子形态以及与 BLAST 在 GenBank 中筛选到的 rDNA 内部转录间隔序列（ITS）、EF-1α 和 TUB2 序列高度相似的分离物的系统进化分析，确定 I. polycarpa 腐烂病的病原体为 Botryosphaeria dothidea。这是首次报道 B. dothidea 是 I. polycarpa 茎腐烂病的病原体。

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来源期刊

Plant Pathology 生物-农艺学

CiteScore

5.60

自引率

7.40%

发文量

147

审稿时长

3 months

期刊介绍： This international journal, owned and edited by the British Society for Plant Pathology, covers all aspects of plant pathology and reaches subscribers in 80 countries. Top quality original research papers and critical reviews from around the world cover: diseases of temperate and tropical plants caused by fungi, bacteria, viruses, phytoplasmas and nematodes; physiological, biochemical, molecular, ecological, genetic and economic aspects of plant pathology; disease epidemiology and modelling; disease appraisal and crop loss assessment; and plant disease control and disease-related crop management.