Combined application of resistance inducer and Trichoderma control two tobacco soil-borne diseases by regulating the field soil microbial composition

IF 1.1 4区 农林科学 Q3 PLANT SCIENCES Journal of Phytopathology Pub Date : 2024-06-09 DOI:10.1111/jph.13333
Xianren Xia, Quanzhen Wang, Kai Guo, GuoQin Yuan, Tao Deng, Zhenyu Zhao, Qichao Guo, Kai Wu, Biao Chen, Yihong Pan
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Abstract

Tobacco black shank (TBS) and tobacco root black rot (TRBR) are two of the most devastating tobacco soil-borne diseases that threaten sustainable tobacco planting. This study investigated the effects of Trichoderma sp. and a resistance inducer (RI) extracted from traditional Chinese medicine, individually or in combination, on the control of TBS and TRBR. The results showed that the application of Trichoderma sp. and RI, individually or in combination, significantly controlled the two soil-borne diseases by significantly affecting the bacterial, but not fungal, Shannon and Simpson diversity indexes. The disease indexes of TBS and TRBR in integrated application management were the lowest, resulting in the highest potassium contents in the tobacco leaves. The control efficacies of TBS and TRBR in the integrated application treatment were 71.52 ± 1.43% and 68.33 ± 0.69%, respectively. The integrated treatment altered the composition of the rhizosphere soil microbial community. The bacterial community, but not the fungal community, of the control treatment was separated from those of other treatments. The relative abundance of bacteria involved in chemoheterotrophy and fermentation in the control treatment increased, whereas that of bacteria involved in nitrification and aerobic ammonia oxidation decreased compared with the other treatments. Importantly, the application of Trichoderma sp. and RI, individually or in combination, clearly increased the relative abundance of saprotrophic fungi in contrast to the control treatment, while decreasing that of pathotrophic fungi. Our study suggests that a suitable integrated application of bioagents and RI has synergistic effects on the suppression of two tobacco soil-borne diseases by altering the rhizosphere microbiome composition in the field.

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抗性诱导剂和毛霉的联合应用通过调节田间土壤微生物组成控制两种烟草土传病害
烟草黑柄病(TBS)和烟草根黑腐病(TRBR)是威胁烟草可持续种植的两种最具破坏性的烟草土传病害。本研究探讨了单独或联合使用毛霉和从中药中提取的抗性诱导剂(RI)对烟草黑柄病和烟草根黑腐病的防治效果。结果表明,单独或联合施用毛霉和抗性诱导剂可显著控制这两种土传病害,对细菌(而非真菌)的香农(Shannon)和辛普森(Simpson)多样性指数有明显影响。在综合施药管理中,TBS 和 TRBR 的病害指数最低,因此烟叶中的钾含量最高。在综合施药处理中,TBS 和 TRBR 的防治效果分别为 71.52 ± 1.43% 和 68.33 ± 0.69%。综合处理改变了根圈土壤微生物群落的组成。对照处理的细菌群落与其他处理的细菌群落分开,但真菌群落没有分开。与其他处理相比,对照处理中参与化合营养和发酵的细菌相对丰度增加,而参与硝化和需氧氨氧化的细菌相对丰度减少。重要的是,与对照处理相比,单独或联合施用毛霉和 RI 明显增加了嗜根真菌的相对丰度,而减少了嗜病真菌的相对丰度。我们的研究表明,适当综合应用生物制剂和 RI 可通过改变田间根瘤微生物组的组成,对抑制两种烟草土传病害产生协同效应。
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来源期刊
Journal of Phytopathology
Journal of Phytopathology 生物-植物科学
CiteScore
2.90
自引率
0.00%
发文量
88
审稿时长
4-8 weeks
期刊介绍: Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays. Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes. Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.
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