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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Systems Microbiology
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1467841
This article is part of the Research Topic Unravelling the Unknown of the Rumen Microbiome: Implications for Animal Health, Productivity, and Beyond View all 5 articles

Multi-omics insights into the energy compensation of rumen microbiota of grazing yaks in cold season

Provisionally accepted
Jie Bai Jie Bai 1*Lijuan Tang Lijuan Tang 1Yanliang Bi Yanliang Bi 2Mingliang Li Mingliang Li 3
  • 1 Key Laboratory of Grassland Ecosystem of the Ministry of Education, Gansu Agricultural University, Lanzhou, China
  • 2 Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, Beijing Municipality, China
  • 3 Livestock and Poultry Genetic Resources Protection and Utilization Center in Qinghai Province, Xining, China, Xining, China

The final, formatted version of the article will be published soon.

    The ability of yaks to adapt to the extreme environment of low temperatures and hypoxia at cold seasons on the Qinghai-Tibet Plateau (QTP) is related to the host genome; however, the convergent evolution of rumen microbiomes in host adaption is unknown. Here, we conducted a multi-omics study on the rumen fluid of grazing yaks from warm (July) and cold (December) seasons on the QTP to evaluate the convergent evolution of rumen microbiomes in the adaptation of grazing yaks to cold-seasons environments. The results showed that grazing yaks at cold seasons had higher fibrolytic enzyme activities and volatile fatty acids (VFAs) concentrations, and the relative abundance of Firmicutes and the ratio Firmicutes to Bacteroidetes was significantly higher than that of yaks at warm seasons. Macrogenomic analyses showed that genes involved in forming VFAs and arginine were significantly enriched in coldseason yaks. Transcriptome analyses of the rumen epithelium showed that 72 genes associated with VFAs absorption and transport were significantly upregulated in coldseason yaks. Metabolomic analyses showed that the levels of ornithine, related to efficient nitrogen utilization, were significantly upregulated in cold-season yaks. The synergistic role of rumen microbiomes in the adaptation of grazing yaks to extreme environments at cold seasons was revealed by multi-omics study.

    Keywords: Yak, rumen microbiota, VFAs transport, Extremely environmental, adaptation

    Received: 21 Jul 2024; Accepted: 23 Sep 2024.

    Copyright: © 2024 Bai, Tang, Bi and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Jie Bai, Key Laboratory of Grassland Ecosystem of the Ministry of Education, Gansu Agricultural University, Lanzhou, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.