中国首次报道引起烟草叶斑病的布尔米菌

IF 1.1 4区农林科学 Q4 PLANT SCIENCES

Australasian Plant Pathology Pub Date : 2025-06-02 DOI:10.1007/s13313-025-01056-z

Tingting Xu, Pan Ma, Rubing Xu, Tom Hsiang, Junbin Huang, Lu Zheng, Yuan Fang, Yanyan Li

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引用次数: 0

摘要

烟草（Nicotiana tabacum L.）是一种重要的经济作物，在中国广泛种植。自2021年以来，中国湖北省恩施、襄阳、宜昌、十堰等地频繁出现一种新型叶斑病。为确定2022年夏季的致病因子，收集了呈圆形病变、边缘呈黄绿色的病叶。经分离鉴定、形态鉴定和分子鉴定（ITS、LSU和TUB），鉴定烟草新叶斑病病原为Boeremia exigua。接种试验表明，枯萎芽孢杆菌菌株可以在离体烟草叶片上引起该病，并且重新分离出与接种菌株形态相同的真菌，证实了Koch的假设。这是世界上首次报道由烟叶斑菌引起的烟草叶斑病。

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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First report of Boeremia exigua causing leaf spot of tobacco (Nicotiana tabacum) in China

Tobacco (Nicotiana tabacum L.) is an economically important crop, widely cultivated in China. Since 2021, a new leaf spot disease has been seen frequently in Enshi, Xiangyang, Yichang, and Shiyan, all in Hubei Province, China. Diseased leaves exhibiting roundish lesions with greenish-yellow edges were collected to determine the causal agent in summer 2022. After isolation, morphological characterization, and molecular identification (ITS, LSU, and TUB), the pathogen of the new tobacco leaf spot disease was identified as Boeremia exigua. Inoculation tests showed that B. exigua strains could cause this disease on detached tobacco leaves, and fungi were re-isolated with morphology identical to the inoculated strain, confirming Koch’s postulates. This is the first report of tobacco leaf spot caused by B. exigua worldwide.

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来源期刊

Australasian Plant Pathology 生物-植物科学

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Australasian Plant Pathology presents new and significant research in all facets of the field of plant pathology. Dedicated to a worldwide readership, the journal focuses on research in the Australasian region, including Australia, New Zealand and Papua New Guinea, as well as the Indian, Pacific regions. Australasian Plant Pathology is the official journal of the Australasian Plant Pathology Society.