Pathogenicity and diversity of large-spored Alternaria associated with three solanaceous vegetables (Solanum tuberosum, S. lycopersicum and S. melongena) in China
文献类型： 外文期刊
作者： Zhao, Lin 1 ; Cheng, Hong 1 ; Liu, Hai-Feng 2 ; Gao, Guo-Yang 3 ; Zhang, Yu 5 ; Li, Zheng-Nan 6 ; Deng, Jian-Xin 1 ;
作者机构： 1.Yangtze Univ, Coll Agr, Dept Plant Protect, Jingzhou, Peoples R China
2.Chonnam Natl Univ, Dept Integrat Food Biosci & Biotechnol, Gwangju, South Korea
3.Kangwon Natl Univ, BioHerb Res Inst, Div Bioresource Sci, Chunchon, South Korea
4.Kangwon Natl Univ, Interdisciplinary Program Smart Agr, Chunchon, South Korea
5.Guangxi Acad Agr Sci, Plant Protect Res Inst, Key Lab Green Prevent & Control Fruits & Vegetable, Guangxi Key Lab Biol Crop Dis & Insect Pests, Nanning, Peoples R China
6.Inner Mongolia Agr Univ, Coll Hort & Plant Protect, Hohhot, Peoples R China
7.Yangtze Univ, Coll Agr, Jingzhou 434025, Hubei, Peoples R China
关键词： Alternaria foliar diseases; diversity; large-spored Alternaria; Solanaceae; taxonomy
期刊名称：PLANT PATHOLOGY （ 影响因子：2.772； 五年影响因子：3.132 ）
ISSN： 0032-0862
年卷期：
页码：
收录情况： SCI
摘要： Alternaria foliar diseases are important factors that pose a significant threat to yield in solanaceous crops. To clarify the diversity of large-spored Alternaria species in China, diseased leaves of three solanaceous vegetables (potato, tomato and eggplant) were collected and used for fungal isolation. In total, 67 strains representing six species in section Porri of Alternaria were isolated, based on morphological characterizations and multilocus phylogenetic analyses. There were three known species (A. blumeae, A. linariae and A. solani), one new record of A. argyroxiphii and two new species, A. melongenicola sp. nov. and A. yichangensis sp. nov. The sequence analyses encompassed the internal transcribed spacer region of rDNA (ITS), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), Alternaria major allergen (Alt a 1), translation elongation factor 1-alpha (TEF1) and RNA polymerase second largest subunit (RPB2). To confirm pathogenicity, 15 representative strains were evaluated for their virulence under greenhouse conditions. The results revealed that they were able to induce leaf spot symptoms on potato, tomato and eggplant plants with a range of aggressive abilities. The present study provides a basis for the recognition and management of Alternaria foliar diseases.
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