Comparative Genomics of Rumen Butyrivibrio spp. Uncovers a Continuum of Polysaccharide-Degrading Capabilities

Author:

Palevich Nikola1,Kelly William J.2,Leahy Sinead C.1,Denman Stuart3,Altermann Eric1,Rakonjac Jasna4ORCID,Attwood Graeme T.1

Affiliation:

1. AgResearch Limited, Grasslands Research Centre, Palmerston North, New Zealand

2. Donvis Limited, Palmerston North, New Zealand

3. Agriculture and Food (CSIRO), St. Lucia, Queensland, Australia

4. Institute of Fundamental Sciences, Massey University, Palmerston North, New Zealand

Abstract

Feeding a global population of 8 billion people and climate change are the primary challenges facing agriculture today. Ruminant livestock are important food-producing animals, and maximizing their productivity requires an understanding of their digestive systems and the roles played by rumen microbes in plant polysaccharide degradation. Members of the genera Butyrivibrio and Pseudobutyrivibrio are a phylogenetically diverse group of bacteria and are commonly found in the rumen, where they are a substantial source of polysaccharide-degrading enzymes for the depolymerization of lignocellulosic material. Our findings have highlighted the immense enzymatic machinery of Butyrivibrio and Pseudobutyrivibrio species for the degradation of plant fiber, suggesting that these bacteria occupy similar niches but apply different degradation strategies in order to coexist in the competitive rumen environment.

Funder

NZ Ministry of Business Innovation and Employment New Economy Research Fund

Community Science Program CSP 612

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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