湖北农业科学 ›› 2025, Vol. 64 ›› Issue (1): 35-38.doi: 10.14088/j.cnki.issn0439-8114.2025.01.006

• 资源·环境 • 上一篇    下一篇

陕北枣树根际微生物筛选及促生性能初探

刘欣瑞1, 黄君丽1,2, 贺晓龙1,3, 刘月芹1,3, 高小朋1,3   

  1. 1.延安大学生命科学学院,陕西 延安 716000;
    2.新疆理工学院,新疆 阿克苏 843100;
    3.陕西省黄土高原菌产业生态循环发展工程技术研究中心,陕西 延安 716000
  • 收稿日期:2024-01-22 发布日期:2025-02-20
  • 通讯作者: 高小朋(1976-),男,陕西洛川人,教授,主要从事资源与环境微生物学、代谢工程与合成生物学研究,(电子信箱)gaoxiaopengyd@163.com。
  • 作者简介:刘欣瑞(1998-),女,陕西延安人,在读硕士研究生,研究方向为资源与环境微生物学,(电子信箱)liuxinrui1211@163.com。
  • 基金资助:
    陕西省科技创新团队建设项目(2023-CX-TD40); 陕西省教育厅重点科学研究计划(重点实验室)项目(17JS136)

Screening and growth-promoting properties of jujube rhizosphere microorganism in Northern Shaanxi

LIU Xin-rui1, HUANG Jun-li1,2, HE Xiao-long1,3, LIU Yue-qin1,3, GAO Xiao-peng1,3   

  1. 1. School of Life Sciences, Yan’ an University, Yan’ an 716000, Shaanxi, China;
    2. Xinjiang Institute of Technology, Aksu 843100, Xinjiang, China;
    3. Research and Development Centre of Ecological and Sustainable Application of Microbial Industry of the Loess Plateau in Shaanxi Province, Yan’ an 716000, Shaanxi, China
  • Received:2024-01-22 Online:2025-02-20

摘要: 采用选择培养基从陕北木枣根际微生物中筛选具有促生性能的菌株,并对其促生性能进行了初步研究,以期为陕北枣树生物菌肥的研发提供可靠的微生物资源。结果显示,筛选得到8株解钾菌,其解钾率为1.7%~2.8%,其中菌株zyk-8的解钾能力最高;得到11株溶磷菌,其溶磷率为1.77%~2.66%,其中菌株 zyp-5溶磷率最高;得到10株产嗜铁素菌株,其嗜铁素相对含量为9.20%~47.85%,其中菌株 zyf-6产嗜铁素的能力最强;得到10株产吲哚乙酸(IAA)菌株,其发酵液中IAA含量为4.50~20.56 mg/L,其中菌株 zyi-3产IAA能力最强。筛选出的菌株具有良好的促生潜力,可作为增强土壤肥力的有效菌株。

关键词: 枣树根际微生物, 筛选, 促生性能, 溶磷, 解钾, 嗜铁素, 吲哚乙酸(IAA), 陕北

Abstract: In order to provide reliable microbial resources for the research and development of jujube biological bacterial fertilizer industry in Northern Shaanxi Province, strains with growth-promoting properties were screened from rhizosphere microorganisms of jujube in Northern Shaanxi Province by selective medium, and their growth-promoting properties were preliminarily studied. The results showed that eight strains of potassium-solubilizing bacteria were obtained, and the potassium-solubilizing rate was 1.7%~2.8%.Among them, strain zyk-8 had the highest potassium-solubilizing ability. Eleven strains of phosphorus-solubilizing bacteria were obtained, and the phosphorus-solubilization rate was 1.77%~2.66%. Among them, the phosphorus-solubilizing rate of strain zyp-5 was the highest. Ten strains of producing siderophore were obtained, and the relative content of siderophore was 9.20%~47.85%. Among them, zyf-6 had the strongest ability to produce siderophore. Ten indoleacetic acid(IAA)-producing strains were screened, and IAA content in the fermentation broth was 4.50~20.56 mg/L. Among them, strain zyi-3 had the strongest ability to produce IAA. The selected strains had good growth promotion potential and could be used as effective strains to enhance soil fertility.

Key words: rhizosphere microorganisms of jujube, screen, growth-promoting properties, phosphate solubilization, potassium solubilization, siderophore, indoleacetic acid(IAA), Northern Shaanxi

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