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Comparative Microbiome Analysis Reveals the Ecological Relationships Between Rumen Methanogens, Acetogens, and Their Hosts

文献类型： 外文期刊

作者： Li, Zhipeng 1 ; Wang, Xiaoxu 1 ; Alberdi, Antton 3 ; Deng, Jiabo 4 ; Zhong, Zhenyu 5 ; Si, Huazhe 1 ; Zheng, Chengli 6 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Special Anim & Plant Sci, Dept Special Econ Anim Nutr & Feed Sci, Changchun, Peoples R China

2.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing, Peoples R China

3.Univ Copenhagen, Ctr Evolutionary Hologen, GLOBE Inst, Copenhagen, Denmark

4.Chengdu Zool Garden, Chengdu, Peoples R China

5.Beijing Milu Ecol Res Ctr, Beijing, Peoples R China

6.Sichuan Inst Musk Deer Breeding, Chengdu, Peoples R China

7.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Danzhou, Peoples R China

8.Washington State Univ, Coll Agr Human & Nat Resource Sci, Pullman, WA 99164 USA

9.Chinese Acad Sci, Kunming Inst Zool, State Key Lab Genet Resources & Evolut, Kunming, Yunnan, Peoples R China

10.Yunnan Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming, Yunnan, Peoples R China

11.Univ Alberta, Dept Agr Food & Nutr Sci, Edmonton, AB, Canada

关键词： ruminants; methane; phylosymbiosis; rumen epithelium; host-microbiome interaction; reindeer

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）

ISSN： 1664-302X

年卷期： 2020 年 11 卷

页码：

收录情况： SCI

摘要： Ruminant methane, which is generated by methanogens through the consumption of hydrogen and supports the normal function of the rumen ecosystem, is a major source of greenhouse gases. Reductive acetogenesis by acetogens is a possible alternative sink that can dispose of hydrogen for acetate production. However, the distribution of rumen methanogens and acetogens along with the relationships among methanogens, acetogens, and their host are poorly understood. Therefore, we investigated the rumen methanogen and acetogen communities of 97 individual animals representing 14 ruminant species within three ruminant families Cervidae (deer), Bovidae (bovid), and Moschidae (musk deer). The results showed that the Methanobrevibacter spp. and acetogens associated with Eubacteriaceae were the most widespread methanogens and acetogens, respectively. However, other methanogens and acetogens exhibited host specificity in the rumen of reindeer and Chinese muntjac deer. Acetogen and methanogen communities were not correlated in these species, and the phylosymbiosis signature between host phylogeny and the composition of both communities was lacking. The abundance of Methanobrevibacter gottschalkii was negatively correlated with the degree of papillation of the rumen wall. Finally, co-occurrence analysis showed that the variation of the predicted methane yields was characterized by the interactive patterns between methanogens, acetogens, and concentrations of rumen metabolites. Our results show that rumen methanogen and acetogen communities have low compositional interdependence and do not exhibit parallel host evolution, which suggests that the strategies for mitigating methane production should be based on a species-specific rumen microbiota analysis.

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