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Pseudomonas chlororaphis YX33 and application thereof in prevention and treatment of tobacco fusarium root rot and growth promotion

A technology of Pseudomonas chloropinus and Fusarium, applied in the field of tobacco disease prevention and control, can solve the problems that Fusarium tobacco has no relevant literature reports, and achieve the effects of promoting growth and development, obvious antagonistic effect, and strong antibacterial effect

Pending Publication Date: 2022-07-05
TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
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Problems solved by technology

At present, there is no relevant literature report on the biological control of Fusarium tobacco by Pseudomonas aeruginosa

Method used

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  • Pseudomonas chlororaphis YX33 and application thereof in prevention and treatment of tobacco fusarium root rot and growth promotion
  • Pseudomonas chlororaphis YX33 and application thereof in prevention and treatment of tobacco fusarium root rot and growth promotion
  • Pseudomonas chlororaphis YX33 and application thereof in prevention and treatment of tobacco fusarium root rot and growth promotion

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Embodiment

[0080] see Figure 1-11, the present invention provides the following technical scheme: a strain of Pseudomonas chlororaphis YX33 and its application in the prevention and control of tobacco Fusarium root rot and growth promotion, the test materials used in the test include test soil samples, test strains, Test tobacco varieties and test medium;

[0081] The test soil samples were collected from the rhizosphere of healthy tobacco plants in Xiangcheng County, Sanmenxia Lushi County, Mianchi County, Henan Province from May to August 2021, with a total of 82 samples;

[0082] The test strains include tobacco Fusarium root rot pathogen Fusarium oxysporum B-9-1 (Fusarium oxysporum), Fusarium solani A-4-9 (Fusarium solani), tobacco blackleg pathogen Phytophthora parasiticus Diseased species (Phytophthora nicotianae), tobacco root black rot pathogen Thielaviopsis basicola, tobacco white silkworm (Sclerotium rolfsiii Sacc), tobacco root blight pathogen Rhizoctonia solani, Aphanomyce...

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Abstract

The invention belongs to the technical field of tobacco disease prevention and treatment, and particularly relates to pseudomonas chlororaphis YX33 and application thereof in prevention and treatment of tobacco fusarium root rot and growth promotion, and test materials used in a test comprise a test soil sample, a test strain, a test tobacco variety and a test culture medium; the invention discloses Pseudomonas chlororaphis YZ33 which has an obvious antagonistic effect on tobacco fusarium root rot, the bacteriostatic mechanism and the growth promoting characteristic of the Pseudomonas chlororaphis YZ33 are preliminarily analyzed, and the Pseudomonas chlororaphis YZ33 is wide in bacteriostatic spectrum for main root and stem diseases of tobacco and has a good application prospect. The antibiotic generated by the thalli is mainly used for inhibiting spore germination and mycelial growth to generate a relatively strong antibacterial effect on tobacco fusarium oxysporum and fusarium solani, the growth and development of tobacco plants can be promoted, and a foundation is laid for subsequent research and application of field biological control.

Description

technical field [0001] The invention belongs to the technical field of tobacco disease prevention and control, and in particular relates to a strain of Pseudomonas chlororaphis YX33 and its application in preventing and controlling Fusarium tobacco root rot and promoting growth. Background technique [0002] tobacco( Nicotiana tabacum L.) belongs to the genus Solanaceae and is a commercial foliar economic crop (Zeng Wenyi et al., 2022). Disease has always been one of the important factors affecting tobacco production. In recent years, with the climatic conditions, soil microecology and Due to changes in farming systems, tobacco Fusarium root rot has become an important rhizome fungal disease that harms tobacco (Li Xiaojie et al., 2022), and the main pathogen causing tobacco Fusarium root rot is Fusarium oxysporum ( Fusarium oxysporum ) and Fusarium solani ( Fusarium solani ) (Qiu Rui et al., 2018). [0003] In recent years, the application of biocontrol microorganisms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12N1/02C12Q1/18C12Q1/04C12Q1/689A01N63/27A01P3/00A01P21/00C12R1/38
CPCC12N1/02C12Q1/18C12Q1/04C12Q1/689A01N63/27G01N2333/21
Inventor 邱睿陈玉国牛莉莉李小杰白静科李成军赵均李淑君徐敏何雷刘东升何晓冰苗圃杨晋燕
Owner TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
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