生物技术通报 ›› 2020, Vol. 36 ›› Issue (5): 110-119.doi: 10.13560/j.cnki.biotech.bull.1985.2019-1150

• 研究报告 • 上一篇    下一篇

丢糟和磷矿粉高温堆肥中耐高温解磷菌的筛选及性能分析

张芮瑞1,2, 邱树毅1,2, 周少奇3, 王雪郦1,2,4   

  1. 1.贵州省发酵工程与生物制药重点实验室,贵阳 550025;
    2.贵州大学酿酒与食品工程学院,贵阳 550025;
    3.贵州科学院,贵阳 550001;
    4.贵州大学生命科学学院,贵阳 550025
  • 收稿日期:2019-11-25 出版日期:2020-05-26 发布日期:2020-06-03
  • 作者简介:张芮瑞,女,硕士研究生,研究方向:食品科学与工程;E-mail:694507986@qq.com
  • 基金资助:
    贵州科技厅联合基金项目(黔科合LH字[2016]7452号),贵州省科技支撑项目(黔科合支撑[2018]2805),中国轻工业浓香型白酒固态发酵重点实验室开放基金项目(2017JJ002)

Screening and Performance Analysis of High-temperature Phosphate-solubilizing Microorgams in High Temperature Compost with Phosphate Rock and Discarded Vinasse Lost Grains

ZHANG Rui-rui1,2, QIU Shu-yi1,2, ZHOU Shao-qi3, WANG Xue-li1,2,4   

  1. 1. Province Key Laboratory of Fermentation Engineering and Biological Pharmacy,Guiyang 550025;
    2. College of Liquor and Food Engineering,Guizhou University,Guiyang 550025;
    3. Guizhou Academy of Sciences,Guiyang 550001;
    4. College of Life Science,Guizhou University,Guiyang 550025
  • Received:2019-11-25 Published:2020-05-26 Online:2020-06-03

摘要: 为了解决高温极端环境下的磷素溶出问题,从高温堆肥中分离出具有耐高温能力的解磷微生物。该研究利用无机磷选择培养基,从添加磷矿粉和丢糟的高温堆肥样品中,分离筛选出5株耐高温解磷菌(细菌为GDB1-2;真菌为GDF1-3),并对这5株菌株进行形态学和分子生物学鉴定及解磷能力分析。研究结果表明,筛选获得的解磷菌株分别为枯草芽孢杆菌(Bacillus subtilis)、地衣芽孢杆菌(Bacillus licheniformis)、多枝横梗霉(Lichtheimia ramosa)、烟曲霉(Aspergillus fumigatus)及构巢曲霉(Aspergillus nidulans)。该5株菌具有较好的耐高温和耐pH性能,各菌株耐高温范围为40-60℃,在50℃条件下其解磷能力均达到最大值,当初始pH 在5-9范围时各菌株均能保持一定的解磷能力。此外,通过解磷曲线发现各菌株的最高解磷量范围在136.85-174.33 μg/mL。该研究结果为后续开发高温环境微生物资源提供了素材,具有良好的应用推广前景。

关键词: 耐高温解磷菌, 高温堆肥, 筛选, 解磷能力

Abstract: In order to solve the problem of the phosphorus dissolution in the high temperature environment,the phosphate-solubilizing microorgams were screened from high temperature compost. Using inorganic phosphorus selective medium,5 strains of high temperature resistant and phosphate-solubilizing microorganisms(bacteria GDB1-2;fungus GDF1-3)were isolated and screened from the high-temperature compost samples added with phosphate rock and lost grains. The 5 strains were identified by morphological and molecular biology and solubilized-phosphorus capability. The results showed that the 5 isolates were Bacillus subtilis,Bacillus licheniformis,Lichtheimia ramosa,Aspergillus fumigatus and Aspergillus nidulans. The phosphorus solubilization curve of the 5 strains showed that the highest phosphorus content of each strain ranged from 136.85 to 174.33 μg/mL. It was found that each strain had a wide range of high temperature resistance and grew between 40-60℃,but its ability to dissolve phosphorus reached a maximum at 50℃. Under the initial pH of 5-9,all the 5 strains maintained a certain ability of dissolving phosphorus. The research results provide materials for the subsequent development of high-temperature environmental microbial resources,and have a good application and promotion prospects.

Key words: high-temperature phosphate-solubilizing microorganism, high-temperature compost, screening, solubilized-phosphorus capability