Conidia Of One Fusarium Solani I.solate From A Soybean-Production F ield Enable To Be Virulent To Soybean And Make Soybean Seedlings Wilted
文献类型: 外文期刊
作者: Zheng Na;Zhang Liu-ping;Huang Wen-kun;Kong Ling-an;Liu Shi-ming;Peng De-liang;Liu Shi-ming;Ge Feng-yong
作者机构:
关键词: Fusarium; soybean root rot; conidia; secretions; virulence; cleaved amplified polymorphic sequences (CAPS) marker
期刊名称: JOURNAL OF INTEGRATIVE AGRICULTURE
ISSN: 2095-3119
年卷期: 2018 年 17 卷 9 期
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摘要: Fusarium is usually thought to cause soybean root rot, which results in a large quantity of annual yield loss in soybean production, by its secretions including Fusarium toxins and cell wall degrading enzymes, but not by the conidia themselves that do not underlie any virulence so far. Here we report that the conidia of one Fusarium solani isolate are able to be virulent to soybean and make soybean seedlings wilted alone. We isolated them from the wilted plants in a soybean-production field and molecularly identified 17 Fusarium isolates through phylogenetic analysis. Of them, except for one isolate that showed diversity of virulence to different soybeans (virulent to one soybean whereas avirulent to another soybean), the others were all virulent to the two tested soybeans: both conidia cultures and secretions could make soybean seedlings wilted at 5 days post infection, and their virulence had dosage effects that only conidia cultures of at least 5x10(6) conidia mL(-1) could show virulence to soybean; however, the sole conidia of the F solani isolate #4 also exhibited virulence to soybean and could make soybean seedlings wilted. Finally, we developed the specific cleaved amplified polymorphic sequences (CAPS) markers to easily differentiate Fusarium isolates. The isolate #4 in this work will likely be used to investigate the new mechanism of virulence of Fusarium to soybean.
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