Decomposition of 14C-labelled lignin and phenols by a Nocardia sp.

Trojanowski, J.; Haider, K.; Sundman, Veronica

doi:10.1007/bf00410776

Cited by 84 publications

(39 citation statements)

References 13 publications

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“…The bacterium was originally isolated from a Finnish soil for its ability to decompose lignin and use lignin degradation compounds as a carbon source (Trojanowski et al 1977).…”

Section: Methodsmentioning

confidence: 99%

Rapid adaptation of Rhodococcus erythropolis cells to salt stress by synthesizing polyunsaturated fatty acids

Carvalho

Marques

Hachicho

et al. 2014

Appl Microbiol Biotechnol

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Bacterial cells are known to adapt to challenging environmental conditions such as osmotic stress. However, most of the work done in this field describes the adaptation of growing populations where the new generations acquire traits that improve their ability to survive. In the present study, the responses of Rhodococcus erythropolis cells within the first 30 min after exposure to osmotic stress caused by sodium chloride were studied. The cells changed the total lipid fatty acid composition and also the net surface charge in the 30 min following exposure. Surprisingly, the cells produced a high percentage of polyunsaturated fatty acids. In the presence of 7.5 % NaCl, these polyunsaturated fatty acids, mainly eicosapentaenoic acid (C20:5ω3), arachidonic acid (C20:4ω6) and docosapentaenoic acid (C22:5ω3), comprise more than 36 % of the total fatty acids. The possible function of these very uncommon fatty acids in bacteria could be the decrease in the number of negatively charged groups in ion channels resulting in a repellence of the NaCl.

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“…The bacterium was originally isolated from a Finnish soil for its ability to decompose lignin and use lignin degradation compounds as a carbon source (Trojanowski et al 1977).…”

Section: Methodsmentioning

confidence: 99%

Rapid adaptation of Rhodococcus erythropolis cells to salt stress by synthesizing polyunsaturated fatty acids

Carvalho

Marques

Hachicho

et al. 2014

Appl Microbiol Biotechnol

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“…A minority of sequences were similar to members of Rhodococcus, Nocardia and Mycobacterium, which are commonly found in soil and water and include human pathogens, saprophytes (Ryan, 2004) and decomposers able to process complex aromatics (van der Geize and Dijkhuizen, 2004), lignin (Trojanowski et al, 1977;Haider et al, 1978) and complex hydrocarbons such as petroleum distillates (Aislabie et al, 1998).…”

Section: Fungal and Actinobacterial Sequencesmentioning

confidence: 99%

Response of fungal and actinobacterial communities to water-level drawdown in boreal peatland sites

Peltoniemi

Fritze

Laiho

2009

Soil Biology and Biochemistry

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We used PCR-DGGE fingerprinting and direct sequencing to analyse the response of fungal and actinobacterial communities to changing hydrological conditions at 3 different sites in a boreal peatland complex in Finland. The experimental design involved a shortterm (3 yrs; STD) and a long-term (43 yrs; LTD) water-level drawdown. Correspondence analyses of DGGE bands revealed differences in the communities between natural sites representing the nutrient-rich mesotrophic fen, the nutrient-poorer oligotrophic fen, and the nutrient-poor ombrotrophic bog. Still, most fungi and actinobacteria found in the pristine peatland seemed robust to the environmental variables. Both fungal and actinobacterial diversity was higher in the fens than in the bog. Fungal diversity increased significantly after STD whereas actinobacterial diversity did not respond to hydrology. Both fungal and actinobacterial communities became more similar between peatland types after LTD, which was not apparent after STD. Most sequences clustered equally between the two main fungal phyla Ascomycota and Basidiomycota. Sequencing revealed that basidiomycetes may respond more (either positively or negatively) to hydrological changes than ascomycetes. Overall, our results suggest that fungal responses to waterlevel drawdown depend on peatland type. Actinobacteria seem to be less sensitive to hydrological changes, although the response of some may similarly depend on peatland type.

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“…But the present study confirms that when the coir pith was treated with the mushroom Pleurotus sajor caju, the nutrient content of coir pith such as Nitrogen, Phosphorous and Potassium showed the variation and it get increased. In addition to the fungi, several reports brought strong evidence of some bacteria can degrade lignin effectively (Crawford, 1978;Haider et al, 1978;Kawakami., 1976;Trojanowski et al, 1977). Cullen and Kersten (2004) reported that the enzymes from white rot fungi that catalyse the initial depolymerization of lignin are extra cellular and unusually non specific.…”

Section: Resultsmentioning

confidence: 99%

Biochemical aspects and formation of phenolic compounds by coir pith degraded by Pleurotus sajor caju

Reghuvaran¹

2012

J. Toxicol. Environ. Health Sci.

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Coir pith is a byproduct of fibre extraction from coconut husk. Coir pith has been produced in large quantities and is dumped as waste as its bulk at the production site itself and disposal efforts are in vain owing to the quantity. Several biological, biochemical and microbial methods have been tried and are underway to degrade the coir pith into useful product. A basidiomycete fungus viz. Pleurotus sajor caju, has the ability to slowly degrade the coir pith and is capable of detoxifying phenolic compounds by producing biopolymerizing enzymes. The present work is targeted to degrade the biochemical constituent present in coir pith includes lignin which is considered as recalcitrant under normal conditions and the production of phenolic compounds which are the break down products of lignin. The enhancement of Nitrogen, phosphorous and potassium (NPK) also shows the enrichment of the compost. Biodegraded product can be used as efficient organic manure and as hydroponic systems for growing roses and vegetables.

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Decomposition of 14C-labelled lignin and phenols by a Nocardia sp.

Cited by 84 publications

References 13 publications

Rapid adaptation of Rhodococcus erythropolis cells to salt stress by synthesizing polyunsaturated fatty acids

Rapid adaptation of Rhodococcus erythropolis cells to salt stress by synthesizing polyunsaturated fatty acids

Response of fungal and actinobacterial communities to water-level drawdown in boreal peatland sites

Biochemical aspects and formation of phenolic compounds by coir pith degraded by Pleurotus sajor caju

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