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- Title
耐盐碱土曲霉 SYAT-1 的分离鉴定及抑制植物病原真菌 特性研究.
- Authors
王凤婷; 王岩; 孙颖; 崔文婧; 乔凯彬; 潘洪玉; 刘金亮
- Abstract
Microorganisms co-exist and evolve in saline environment for a long time and have unique adaptability and biological properties, which make them the first choice in the microbial improvement of saline land. A saline-alkali tolerant fungal strain SYAT-1 was isolated from a typical soda saline soil in Songyuan city, Jilin province. It was identified by morphological characteristics observation and ITSrDNA sequence analysis. The growth characteristics at different pH, salt tolerance, antagonistic activity against phytopathogenic fungi and potential pathogenicity of the strain were investigated. The results showed that it was identified as Aspergillus terreus and grew under alkaline (pH=7.0-12.0)medium conditions, with an optimal pH range of 7.0-9.0. It grew well on both 0-17.5 mg/mL NaCl PDA medium and 0-4 mg/mL NaHCO3 PDA medium. Antagonistic phytopathogenic fungi assay results revealed that strain SYAT-1 presented some inhibitory effect on the test phytopathogenic fungi. Potential pathogenicity test results demonstrated that strain SYAT-1 had no potential pathogenicity to the test plants. In sum, A. terreus strain SYAT-1 belongs to a fungus with high salt tolerance characteristics and suppressing phytopathogenic fungi. This study provides new strain resources and theoretical support for the use of microorganisms to improve saline soils and biological control of plant diseases.
- Publication
Biotechnology Bulletin, 2023, Vol 39, Issue 2, p203
- ISSN
1002-5464
- Publication type
Article
- DOI
10.13560/j.cnki.biotech.bull.1985.2022-0582