First Report of Root Rot Caused by Fusarium avenaceum and Fusarium flocciferum on Astragalus membranaceus var. mongholicus in China

被引：0
|
作者：
Qi, Hexing [1 ]
Qi, Xiangxing [2 ]
Xu, Wenhua [3 ]
An, Zhouluo [1 ]
Fan, Taiyan [1 ]
机构：
[1] Qinghai Univ, Coll Agr & Anim Husb, Xining, Qinghai, Peoples R China
[2] Transportat Hosp Qinghai Prov, Xining, Qinghai, Peoples R China
[3] Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Qinghai, Peoples R China
来源：
JOURNAL OF PHYTOPATHOLOGY | 2024年 / 172卷 / 05期
关键词：
Astragalus membranaceus var. mongholicus; Fusarium avenaceum; Fusarium flocciferum; Mongolian milkvetch; root rot; GROWTH;
D O I：
10.1111/jph.13397
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Astragalus membranaceus var. mongholicus (Mongolian milkvetch) is one of the most important traditional Chinese medicinal plants. In July 2021, root rot of A. membranaceus var. mongholicus was found in a field in Tongren City, Huangnan Tibetan Autonomous Prefecture, Qinghai Province, China. The aboveground part of the plants exhibited yellowing, wilting and defoliation in severe cases. Seven fungal isolates were obtained, and their pathogenicity, morphology and phylogeny were analysed. A pathogenicity test was performed using the scratch and root irrigation methods, and the results showed that all seven isolates caused root rot on inoculated plants. Based on morphological characteristics and phylogenetic analysis of multi-locus sequences (ITS, translation elongation factor [TEF-1 alpha], and RNA polymerase II beta subunit [RPB2] genes), two isolates were identified as Fusarium avenaceum, and five isolates were identified as F. flocciferum. To the best of our knowledge, this is the first report of F. avenaceum and F. flocciferum causing root rot of A. membranaceus var. mongholicus in China.
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页数：5
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