First report of Fusarium sacchari causing root rot of tobacco (Nicotiana tabacum L.) in China

被引：1
|
作者：
Qiu, Rui [1 ]
Li, Caihong [1 ]
Li, Xiaojie [1 ]
Zhang, Yingying [1 ]
Liu, Chang [1 ]
Li, Chenjun [1 ]
Chen, Yuguo [1 ]
Bai, Jingke [1 ]
Xu, Min [2 ]
Song, Ruifang [2 ]
Li, Shujun [1 ]
机构：
[1] Henan Acad Agr Sci, Tobacco Res Inst, Key Lab Green Preservat & Control Tobacco Dis & Pe, Xuchang 461000, Peoples R China
[2] China Natl Tobacco Corp Henan Prov, Zhengzhou 4510003, Peoples R China
来源：
CROP PROTECTION | 2023年 / 174卷
关键词：
Fusarium sacchari; Molecular identification; Morphological characteristics; Nicotiana tabacum L; Root rot; IDENTIFICATION; NUCLEAR; DISEASE;
D O I：
10.1016/j.cropro.2023.106437
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Xiangcheng county has a long history of tobacco planting, it is one of the three cradles of flue-cured tobacco in China, and has the reputation of "Eastern Virginia". In recent years, tobacco fusarium root rot has gradually become a devastating disease in this area. The occurrence of root rot was observed in tobacco fields of Xiang-cheng County, China. The symptoms showed as plant wilt, leaf chlorosis and root necrosis. The isolated fungus was identified as Fusarium sacchari by morphological characteristics and molecular analysis of translation elongation factor 1-alpha (EF-1 alpha), the RNA polymerase II largest subunit (RPB1) and second largest subunit (RPB2) gene sequences. Phylogenetic analysis of the concatenated three-loci of EF-1 alpha, RPB1 and RPB2 showed that the isolate was placed in the F. sacchari group, and the Bootstrap value reached 99%. Pathogenicity test showed that F. sacchari could cause tobacco root rot. This is the first report of F. sacchari causing tobacco root rot in China.
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页数：6
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