First Report of Curvularia hominis as a Causal Agent of Riceberry Rice Leaf Spot in Northern Thailand

IF 0.6 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Chiang Mai Journal of Science Pub Date : 2023-11-30 DOI:10.12982/cmjs.2023.066

Dorkrak Chaisarn, N. Suwannarach, S. Lumyong, S. Youpensuk, W. Pathom-aree

引用次数: 0

Abstract

L eaf spot disease was observed on Riceberry rice (Oryza sativa L.) in the San Pa-Tong District of Chiang Mai Province, northern Thailand during the rainy season in September 2015. A single strain of Curvularia was isolated from disease symptoms. To confirm its pathogenicity, the isolated fungus was used to inoculate healthy Riceberry rice leaves. Subsequently, the same fungus was re-isolated from the leaves, displaying similar symptoms to those observed in the field. Morphological characteristics and multi-gene phylogenetic analyses of the internal transcribed spacers (ITS) and large subunit (LSU) of nuclear ribosomal DNA, glyceraldehyde-3-phosphate dehydrogenase (GPDH), and the RNA polymerase II second largest subunit (RBP2) genes were applied to identify the pathogen as Curvularia hominis. This finding represents the first report of C. hominis as the causal agent of leaf spot disease on Riceberry rice in Thailand.

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泰国北部首次报告 Curvularia hominis 为水稻叶斑病的病原菌

2015 年 9 月雨季期间，在泰国北部清迈府 San Pa-Tong 县的水稻（Oryza sativa L.）上观察到叶斑病。从病害症状中分离出一株 Curvularia。为确认其致病性，分离出的真菌被用于接种健康的水稻叶片。随后，从叶片中再次分离出相同的真菌，其症状与田间观察到的症状相似。通过形态学特征以及核糖体 DNA 内部转录间隔（ITS）和大亚基（LSU）、甘油醛-3-磷酸脱氢酶（GPDH）和 RNA 聚合酶 II 第二大亚基（RBP2）基因的多基因系统发育分析，确定病原体为 Curvularia hominis。这一发现是泰国首次报道 C. hominis 是稻米叶斑病的病原菌。

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

Chiang Mai Journal of Science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.00

自引率

25.00%

发文量

103

审稿时长

3 months

期刊介绍： The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.