Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (9): 11-23.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0926

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Research Advances in Silage Microbial Communities and Functions

CHEN Meng-yan1,2(), BAI Jie2,3, KE Wen-can1,2, XU Dong-mei1,2, AI Lin4(), GUO Xu-sheng1,2()   

  1. 1. School of Life Sciences,Lanzhou University,Lanzhou 730000
    2. Probiotics and Biological Feed Research Centre,Lanzhou University,Lanzhou 730000
    3. College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730000
    4. China Animal Agriculture Association,Beijing 100044
  • Received:2021-07-17 Online:2021-09-26 Published:2021-10-25
  • Contact: AI Lin,GUO Xu-sheng E-mail:chenmy2020@lzu.edu.cn;angel9522@163.com;guoxsh07@lzu.edu.cn

Abstract:

Microbial community is a key factor affecting the fermentation quality of silage. Both microorganisms attached to the surface of raw materials and exogenous microorganisms play an important role in the microbial community succession during the ensiling process. Understanding the microbial community,function and fermentation metabolism regulation network of silage are of great significance for in-depth analysis of the biological process of silage fermentation,and also can provide a strong scientific basis for the fermentation and modulation of safe and high-quality silage. However,the traditional detection methods are of low accuracy and cannot deeply analyze the microbial community structure in silage. Therefore,how to comprehensively and accurately use molecular biology techniques to detect the microbial community structure and species in silage will be of great significance for breaking through the research of micro-ecological regulation of silage fermentation. This review depicted the effects of epiphytic microorganisms and growth environment,characterization of silage materials,and lactic acid bacteria inoculants on the microbial structure of silage,as well as summarized the current situation of PICRUSt method applied in silage microbial function,aiming to provide some suggestions for characterizing microbial dynamics and function of silage and to present theoretical foundation for revealing micro-ecology process during the ensiling process.

Key words: silage, microbial community, function