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Appl Environ Microbiol. 1981 Feb;41(2):337-41. doi: 10.1128/aem.41.2.337-341.1981.

Poplar lignin decomposition by gram-negative aerobic bacteria.

Applied and environmental microbiology

E Odier, G Janin, B Monties

Affiliations

  1. Institut National Agronomique Paris-Grignon, Centre de Paris, Laboratoire de Microbiologie 75005 Paris, France.

PMID: 16345706 PMCID: PMC243695 DOI: 10.1128/aem.41.2.337-341.1981

Abstract

Eleven gram-negative aerobic bacteria (Pseudomonadaceae and Neisseriaceae) out of 122 soil isolates were selected for their ability to assimilate poplar dioxane lignin without a cosubstrate. Dioxane lignin and milled wood lignin degradation rates ranged between 20 and 40% of initial content after 7 days in mineral medium, as determined by a loss of absorbance at 280 nm; 10 strains could degrade in situ lignin, as evidenced by the decrease of the acetyl bromide lignin content of microtome wood sections. No degradation of wood polysaccharides was detected. Lignin biodegradation by Pseudomonas 106 was confirmed by CO(2) release from labeled poplar wood, although in lower yields compared with results obtained through chemical analysis based on acetyl bromide residual lignin determination.

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