LAMP Assay for Distinguishing Fusarium oxysporum and Fusarium commune in Lotus (Nelumbo nucifera) Rhizomes
文献类型： 外文期刊
作者： Deng, Sheng 1 ; Ma, Xin 1 ; Chen, Yifan 1 ; Feng, Hui 1 ; Zhou, Dongmei 1 ; Wang, Xiaoyu 1 ; Zhang, Yong 4 ; Zhao, Min 1 ; Zhang, Jinfeng 1 ; Daly, Paul 1 ; Wei, Lihui 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Key Lab Food Qual & Safety Jiangsu Prov State, Nanjing 210014, Peoples R China
2.Nanjing Agr Univ, Coll Plant Protect, Dept Plant Pathol, Nanjing 210095, Peoples R China
3.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Jiangsu, Peoples R China
4.NINDS, Bioinformat Sect, NIH, Bldg 36,Rm 4D04, Bethesda, MD 20892 USA
关键词： Fusarium oxysporum; Fusarium commune; loop-mediated isothermal amplification (LAMP); lotus rhizome rot; mitochondrial genome; pathogen detection
期刊名称：PLANT DISEASE （ 影响因子：4.614； 五年影响因子：5.33 ）
ISSN： 0191-2917
年卷期： 2022 年 106 卷 1 期
页码：
收录情况： SCI
摘要： Yields of edible rhizome from cultivation of the perennial hydrophyte lotus (Nelumbo nucifera) can be severely reduced by rhizome rot disease caused by Fusarium species. There is a lack of rapid field-applicable methods for detection of these pathogens on lotus plants displaying symptoms of rhizome rot. Fusarium commune (91%) and Fusarium oxysporum (9%) were identified at different frequencies from lotus samples showing symptoms of rhizome rot. Because these two species can cause different severity of disease and their morphology is similar, molecular diagnostic-based methods to detect these two species were developed. Based on the comparison of the mitochondrial genome of the two species, three specific DNA loci targets were found. The designed primer sets for conventional PCR, quantitative PCR, and loop-mediated isothermal amplification (LAMP) precisely distinguished the above two species when isolated from lotus and other plants. The LAMP detection limits were 10 pg/mu l and 1 pg/mu l of total DNA for F. commune and F. oxysporum, respectively. We also carried out field-mimicked experiments on lotus seedlings and rhizomes (including inoculated samples and field-diseased samples), and the results indicated that the LAMP primer sets and the supporting portable methods are suitable for rapid diagnosis of the lotus disease in the field. The LAMP-based detection method will aid in the rapid identification of whether F. oxysporum or F. commune is infecting lotus plants with symptoms of rhizome rot and can facilitate efficient pesticide use and prevent disease spread through vegetative propagation of Fusarium-infected lotus rhizomes.
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