Zheng Yuanxian, Wang Jiming, Zhao Wenlong, Cai Xianjie, Xu Yinlian, Chen Xiaolong, Yang Min, Huang Feiyan, Yu Lei, He Yuansheng
Lincang Company of Yunnan Tobacco Company, Lincang 677000, China.
Material Procurement Center, Shanghai Tobacco Group Co., Ltd., Shanghai 200082, China.
Plant Pathol J. 2022 Jun;38(3):203-211. doi: 10.5423/PPJ.OA.03.2022.0035. Epub 2022 Jun 1.
Bacterial wilt, which is a major soil-borne disease with widespread occurrence, poses a severe danger in the field of tobacco production. However, there is very limited knowledge on bacterial wilt-induced microecological changes in the tobacco root system and on the interaction between Ralstonia solanacearum and fungal communities in the rhizosphere soil. Thus, in this study, changes in fungal communities in the rhizosphere soil of tobaccos with bacterial wilt were studied by 18S rRNA gene sequencing. The community composition of fungi in bacterial wilt-infected soil and healthy soil in two tobacco areas (Gengma and Boshang, Lincang City, Yunnan Province, China) was studied through the paired comparison method in July 2019. The results showed that there were significant differences in fungal community composition between the rhizosphere soil of diseased plants and healthy plants. The changes in the composition and diversity of fungal communities in the rhizosphere soil of tobaccos are vital characteristics of tobaccos with bacterial wilt, and the imbalance in the rhizosphere microecosystem of tobacco plants may further aggravate the disease.
青枯病是一种广泛发生的主要土传病害，在烟草生产领域构成严重威胁。然而，关于青枯病引起的烟草根系微生态变化以及青枯雷尔氏菌与根际土壤真菌群落之间的相互作用，人们了解的知识非常有限。因此，在本研究中，通过18S rRNA基因测序研究了患青枯病烟草根际土壤中真菌群落的变化。2019年7月，采用配对比较法研究了中国云南省临沧市耿马和博尚两个烟草种植区青枯病感染土壤和健康土壤中真菌的群落组成。结果表明，患病植株和健康植株的根际土壤真菌群落组成存在显著差异。烟草根际土壤真菌群落组成和多样性的变化是患青枯病烟草的重要特征，烟草植株根际微生态系统的失衡可能会进一步加重病害。
