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Review on Mining Robust Lactic Acid Bacteria for Next-Generation Silage Inoculants via Multi-Omics.

Yanyan Liu1, Mingxuan Zhao1, Shanyao Zhong1

  • 1College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.

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This summary is machine-generated.

Lactic acid bacteria (LAB) are key for silage fermentation, improving feed quality. Research focuses on identifying and characterizing LAB strains with beneficial traits for better silage production.

Keywords:
lactic acid bacteriamicrobial resourcesmulti-omics technologiessilage

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Area of Science:

  • * Microbiology and Fermentation Science
  • * Animal Nutrition and Feed Science

Background:

  • * Lactic acid bacteria (LAB) are essential microorganisms in silage fermentation, significantly impacting silage quality and feed safety.
  • * Screening, identification, and functional characterization of LAB strains are critical research areas for optimizing silage production.

Purpose of the Study:

  • * To review the methods for isolating, identifying, and characterizing LAB strains for silage applications.
  • * To highlight the functional traits of LAB, including stress tolerance and beneficial activities.
  • * To discuss the application of modern 'omics' technologies in understanding silage microbial communities and LAB functions.

Main Methods:

  • * Isolation and purification of LAB from diverse sources.
  • * Identification using morphological, physiological, biochemical, and molecular techniques.
  • * Application of multi-omics approaches (microbiomics, metabolomics, metagenomics, transcriptomics) for community and metabolic analysis.

Main Results:

  • * Identification of LAB strains with tolerance to extreme conditions and desirable functional traits like antimicrobial activity and cellulose degradation.
  • * Demonstration of superior LAB inoculants' ability to enhance acidification, reduce nutrient loss, inhibit pathogens, and improve fermentation.
  • * Exploration of novel LAB functions, including mycotoxin degradation, heavy metal adsorption, and methane emission reduction.

Conclusions:

  • * Advanced LAB strains offer significant potential for improving silage quality, feed safety, and environmental benefits.
  • * Challenges remain in strain-crop interactions, raw material dependency, limited functionality, and cost-effectiveness.
  • * Integrating multi-omics with traditional methods and exploring new resources like endophytic LAB will drive the development of next-generation inoculants.