Researchers find thousands of novel bacterial species in high-altitude herbivore droppings with potential applications in gene editing and emissions reduction

In the extreme environment of the Qinghai-Tibet Plateau—Earth’s highest region—Chinese researchers have uncovered an extraordinary resource: the digestive systems of native grazing animals.

As explained here, a comprehensive five-year study has revealed that waste from yaks, Tibetan sheep, antelope, and other plateau herbivores contains thousands of microbial species that have never been previously documented by science. These microorganisms show promise for advancing multiple biotechnology fields.

Among the discoveries are bacterial strains capable of breaking down cellulose—the primary component of plant cell walls, which is used in paper, textiles, and cardboard production. Other strains demonstrate potential for curbing methane output from agricultural livestock.

The genomic information gathered could also inform the development of advanced gene-editing technologies, antimicrobial compounds, and various biotechnology applications, according to the research team.

“Animals adapted to extreme conditions represent valuable sources for discovering novel biological functions in gut microbes,” the scientists stated in their Microbiome journal publication.

The research represents the first comprehensive mapping of gut bacteria in mammals native to the Qinghai-Tibetan Plateau, highlighting how much microbial biodiversity remains unexplored worldwide.

This work forms part of the Second Tibetan Plateau Scientific Expedition and Research Programme. Researchers from Yunnan University and BGI-Research gathered over 5,000 fresh fecal specimens from six plateau herbivores: yaks, Tibetan sheep, antelope, cattle, horses, and wild asses known as kiangs.

Initial analysis of 1,412 samples revealed that 88 percent contained previously undocumented microbial species.

Lead researcher Zhang Zhigang from Yunnan University emphasized the strategic importance of cataloging these biological resources, noting that countries leading such discoveries can establish control over patentable functional elements.

Zhang highlighted the CRISPR-Cas genome-editing system as an example, which relies on enzymes that precisely cut DNA. The team’s database could reveal novel enzymes suitable for gene-editing applications with improved stability and targeting accuracy.

The research team also plans to explore developing small-molecule drugs—compounds designed to penetrate cells and influence specific biological pathways.

BGI-Research scientist Li Xiaoping explained that her team applied expertise from human and laboratory animal gut microbiome studies to wildlife analysis.

“Plateau herbivores consume substantial plant matter, meaning their digestive systems contain numerous cellulose-degrading enzymes,” Li noted. The team is currently validating which enzymes drive this breakdown process through laboratory experiments.

The researchers are also investigating bacteria that help yaks produce less methane than cattle. Two newly identified bacterial strains showed promising results in laboratory tests using cattle rumen fluid, reducing methane output compared to control groups.

“We’re designing live animal trials to determine whether these bacteria produce similar effects within living organisms,” Li said. “Success could contribute significantly to reducing agricultural greenhouse gas emissions.”