首页|Comparison of rumen archaeal diversity in adult and elderly yaks (Bos grunniens) using 16S rRNA gene high-throughput sequencing

Comparison of rumen archaeal diversity in adult and elderly yaks (Bos grunniens) using 16S rRNA gene high-throughput sequencing

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
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This study was conducted to investigate the phylogenetic diversity of archaea in the rumen of adult and elderly yaks. Six domesticated female yaks, 3 adult yaks ((5.3±0.6) years old), and 3 elderly yaks ((10.7±0.6) years old), were used for the rumen contents collection. Illumina MiSeq high-throughput sequencing technology was applied to examine the archaeal composition of rumen contents. A total of 92901 high-quality archaeal sequences were analyzed, and these were assigned to 2033 operational taxonomic units (OTUs). Among these, 974 OTUs were unique to adult yaks while 846 OTUs were unique to elderly yaks; 213 OTUs were shared by both groups. At the phylum level, more than 99% of the obtained OTUs belonged to the Euryarchaeota phylum. At the genus level, the archaea could be divided into 7 archaeal genera. The 7 genera (i.e., Methanobrevibacter, Methanobacterium, Methanosphaera, Thermogymnomonas, Methanomicrobiu, Meth-animicrococcus and the unclassified genus) were shared by allyaks, and their total abundance accounted for 99% of the rumen archaea. The most abundant archaea in elderly and adult yaks were Methanobrevibacter and Thermogymnomonas, respectively. The abundance of Methanobacteria (class), Methanobacteriales (order), Methanobacteriaceae (family), and Methanobrevibacter (genus) in elderly yaks was significantly higher than in adult yaks. In contrast, the abundance of Ther-mogymnomonas in elderly yaks was 34% lower than in adult yaks, though the difference was not statistical y significant. The difference in abundance of other archaea was not significant between the two groups. These results suggested that the structure of archaea in the rumen of yaks changed with age. This is the first study to compare the phylogenetic differences of rumen archaeal structure and composition using the yak model.

yakarchaearumendiversityhigh-throughput sequencing

WANG Li-zhi、WANG Zhi-sheng、XUE Bai、WU De、PENG Quan-hui

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Animal Nutrition Institute, Sichuan Agricultural University, Ya'an 625014, P.R.China

We would like to thank the International Cooperation Project of the Ministry of Sciences and Technology of ChinaNational Natural Science Foun-dation of China

2014DFA3286031402104

2017

10.1016/S2095-3119(16)61454-5

农业科学学报(英文)
中国农业科学院农业信息研究所

农业科学学报(英文)

CSTPCDCSCDSCI
影响因子：0.576
ISSN：2095-3119
年,卷(期)：2017.16(5)
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