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<p>L-arabinose is a natural pentose sugar widely present in plant cell walls and agricultural residues. It functions both as a carbon source and a signaling molecule, endowing it with significant potential for applications. This article reviews the sources, microbial metabolism, and signal transduction pathways of L-arabinose, with a focus on its regulatory roles and mechanisms in the gut ecosystem and the plant rhizosphere microenvironment. In the gut, L-arabinose modulates microbiota composition, repairs the intestinal barrier, maintains water and salt balance, and influences gastrointestinal hormones and neurotransmitters, thereby inhibiting foodborne pathogens and alleviating constipation. In the plant rhizosphere, L-arabinose activates defense pathways, enhances crop resistance against pathogens, and improves the disease-suppression ability of biocontrol agents. This review aims to provide a theoretical foundation for developing L-arabinose-based functional food ingredients and sustainable crop protection strategies, offering innovative approaches to improve the safety and resilience of food systems.</p>

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L-arabinose: a strategic modulator of pathogen virulence for food system safety

  • 期刊论文

  • 发表日期：

    2026年7月21日

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  • Zheng Li,
  • Shiju Jing,
  • Huimin Chen,
  • Ke Shang,
  • Chengshui Liao,
  • Ke Ding,
  • Yanyan Jia,
  • Songbiao Chen

摘要

L-arabinose is a natural pentose sugar widely present in plant cell walls and agricultural residues. It functions both as a carbon source and a signaling molecule, endowing it with significant potential for applications. This article reviews the sources, microbial metabolism, and signal transduction pathways of L-arabinose, with a focus on its regulatory roles and mechanisms in the gut ecosystem and the plant rhizosphere microenvironment. In the gut, L-arabinose modulates microbiota composition, repairs the intestinal barrier, maintains water and salt balance, and influences gastrointestinal hormones and neurotransmitters, thereby inhibiting foodborne pathogens and alleviating constipation. In the plant rhizosphere, L-arabinose activates defense pathways, enhances crop resistance against pathogens, and improves the disease-suppression ability of biocontrol agents. This review aims to provide a theoretical foundation for developing L-arabinose-based functional food ingredients and sustainable crop protection strategies, offering innovative approaches to improve the safety and resilience of food systems.