Acta Veterinaria et Zootechnica Sinica ›› 2025, Vol. 56 ›› Issue (10): 4851-4862.doi: 10.11843/j.issn.0366-6964.2025.10.008

• Review • Previous Articles     Next Articles

Fate of the Colistin Resistance Gene mcr-1 in Crop-Livestock Integrated Farming Systems

RAN Hongli1(), WEN Xin1, XU Jiaojiao1, CHEN Longhai1, WU Yinbao1,2,3,4,*()   

  1. 1. College of Animal Science, South China Agricultural University, Guangzhou 510642, China
    2. State Key Laboratory of Swine and Poultry Breeding Industry, Guangzhou 510642, China
    3. National Engineering Research Center for Breeding Swine Industry, Guangzhou 510642, China
    4. Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, Guangzhou 510642, China
  • Received:2024-12-24 Online:2025-10-23 Published:2025-11-01
  • Contact: WU Yinbao E-mail:3350656529@qq.com;wuyinbao@scau.edu.cn

Abstract:

The resistance gene mcr-1, as a key genetic element mediating bacterial resistance to "last-resort" antibiotic colistin, has become a research hotspot since its discovery and poses a potential threat to public health. This paper aims to investigate the fate of colistin resistance gene mcr-1 in the planting-breeding cycling system. First, we summarize the resistance mechanisms, horizontal gene transfer, fitness costs, and compensatory evolution of mcr-1. Subsequently, we examine its occurrence, fate, and horizontal transmission characteristics in the planting-breeding cycling system, along with the key factors influencing its dissemination. Finally, we propose corresponding control measures, providing insights for high-quality development of circular agriculture and public health security.

Key words: crop-livestock integrated farming system, antibiotic resistance gene, mcr-1, fate, horizontal gene transfer, colistin

CLC Number: