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Olsson, Niklas, 2016. Lignin degradation and oxygen dependence. Second cycle, A2E. Alnarp: SLU, Department of Plant Breeding (from 130101)

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Abstract

This work concerns itself with the biological degradation of the lignin polymer. The chemical composition of the polymer makes it recalcitrant toward hydrolysis and other common chemical reactions occurring under biological conditions. The rumen of animals is considered as a place of high turnover rates for plant matter where lignin is an integral constituent. This makes it a promising place to look for microorganisms adapted to degrade the lignin fraction of the plant matter. In this work, steps were taken to create a metagenomic library of the microorganisms present in the rumen of sheep. Bioinformatical searches were performed to investigate the possible existence of enzyme systems explaining the widespread presence of the genera Clostridium and Desulfovibrio in environments rich in lignin. While several species of Clostridium contained an O-demethylase system, the presence of Desulfovibrio could not be explained.

Main title:Lignin degradation and oxygen dependence
Authors:Olsson, Niklas
Supervisor:Lager, Ida and Hatti-Kaul, Rajni
Examiner:Hofvander, Per
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2016
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:LY003 Horticultural Science Programme 300 HEC
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Keywords:lignin, degradation, Clostridium, Desulfovibrio, metagenome, sheep
URN:NBN:urn:nbn:se:slu:epsilon-s-6135
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-6135
Subjects:Life sciences
Language:English
Deposited On:16 Dec 2016 15:08
Metadata Last Modified:16 Dec 2016 15:08

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