气候变化领域集成服务门户(CCPortal): First report of Erysiphe astragali causing powdery mildew on Astragalus strictus in Tibet, China

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DOI	10.1007/s13313-023-00911-1
	First report of Erysiphe astragali causing powdery mildew on Astragalus strictus in Tibet, China
	Wang, Cheng-Bin; Jiang, Ning
发表日期	2023
ISSN	0815-3191
EISSN	1448-6032
起始页码	207
结束页码	214
卷号	52 期号:3
英文摘要	Astragalus strictus (Fabaceae) is one of the major locoweeds commonly found in Tibet, China. In 2021 and 2022, the occurrence of powdery mildew on A. strictus leaves was investigated in Tibet with approximately 50-70% disease incidence and 26.9-37.5% disease severity. The typical symptoms included white powdery mildew colonies and dark chasmothecia on the host leaves. To identify the causal agent, fresh leaves covered with powdery mildew were collected and identified by morphology and molecular analyses. Phylogenetic analyses of the internal transcribed spacer (ITS) region and the 28 S (large subunit) rDNA showed that our collection was clustered with Erysiphe astragali. The morphology of our collection was appendages equatorially and flexuous, asci 4-8 per chasmothecium, ovoid to subglobose and ascospores 4 per ascus, ovoid or ellipsoid. A pathogenicity test on plants by pressing naturally infected leaves onto healthy leaves confirmed that the tested fungus was pathogenic. Therefore, E. astragali was identified as the causative agent of this disease. To our knowledge, this is the first report of E. astragali associated with powdery mildew on A. strictus in China.
关键词	Erysiphaceae Morphology New disease Powdery mildew
英文关键词	COMPREHENSIVE PHYLOGENETIC ANALYSIS; CRUCIFERARUM; EVOLUTION
WOS研究方向	Plant Sciences
WOS记录号	WOS:000948858300001
来源期刊	AUSTRALASIAN PLANT PATHOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282993
作者单位	Chinese Academy of Forestry; Research Institute of Forest Ecology, Environment and Protection, CAF
推荐引用方式 GB/T 7714	Wang, Cheng-Bin,Jiang, Ning. First report of Erysiphe astragali causing powdery mildew on Astragalus strictus in Tibet, China[J],2023,52(3).
APA	Wang, Cheng-Bin,&Jiang, Ning.(2023).First report of Erysiphe astragali causing powdery mildew on Astragalus strictus in Tibet, China.AUSTRALASIAN PLANT PATHOLOGY,52(3).
MLA	Wang, Cheng-Bin,et al."First report of Erysiphe astragali causing powdery mildew on Astragalus strictus in Tibet, China".AUSTRALASIAN PLANT PATHOLOGY 52.3(2023).