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Characterization of Trapped Lignin-Degrading Microbes in Tropical Forest Soil

Overview of attention for article published in PLOS ONE, April 2011
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Title
Characterization of Trapped Lignin-Degrading Microbes in Tropical Forest Soil
Published in
PLOS ONE, April 2011
DOI 10.1371/journal.pone.0019306
Pubmed ID
Authors

Kristen M. DeAngelis, Martin Allgaier, Yaucin Chavarria, Julian L. Fortney, Phillip Hugenholtz, Blake Simmons, Kerry Sublette, Whendee L. Silver, Terry C. Hazen

Abstract

Lignin is often the most difficult portion of plant biomass to degrade, with fungi generally thought to dominate during late stage decomposition. Lignin in feedstock plant material represents a barrier to more efficient plant biomass conversion and can also hinder enzymatic access to cellulose, which is critical for biofuels production. Tropical rain forest soils in Puerto Rico are characterized by frequent anoxic conditions and fluctuating redox, suggesting the presence of lignin-degrading organisms and mechanisms that are different from known fungal decomposers and oxygen-dependent enzyme activities. We explored microbial lignin-degraders by burying bio-traps containing lignin-amended and unamended biosep beads in the soil for 1, 4, 13 and 30 weeks. At each time point, phenol oxidase and peroxidase enzyme activity was found to be elevated in the lignin-amended versus the unamended beads, while cellulolytic enzyme activities were significantly depressed in lignin-amended beads. Quantitative PCR of bacterial communities showed more bacterial colonization in the lignin-amended compared to the unamended beads after one and four weeks, suggesting that the lignin supported increased bacterial abundance. The microbial community was analyzed by small subunit 16S ribosomal RNA genes using microarray (PhyloChip) and by high-throughput amplicon pyrosequencing based on universal primers targeting bacterial, archaeal, and eukaryotic communities. Community trends were significantly affected by time and the presence of lignin on the beads. Lignin-amended beads have higher relative abundances of representatives from the phyla Actinobacteria, Firmicutes, Acidobacteria and Proteobacteria compared to unamended beads. This study suggests that in low and fluctuating redox soils, bacteria could play a role in anaerobic lignin decomposition.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 292 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 6 2%
India 2 <1%
Malaysia 1 <1%
Austria 1 <1%
Switzerland 1 <1%
South Africa 1 <1%
Brazil 1 <1%
Kenya 1 <1%
Slovenia 1 <1%
Other 3 1%
Unknown 274 94%

Demographic breakdown

Readers by professional status Count As %
Researcher 76 26%
Student > Ph. D. Student 68 23%
Student > Master 24 8%
Student > Doctoral Student 18 6%
Professor > Associate Professor 15 5%
Other 53 18%
Unknown 38 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 129 44%
Environmental Science 39 13%
Biochemistry, Genetics and Molecular Biology 22 8%
Engineering 12 4%
Immunology and Microbiology 9 3%
Other 24 8%
Unknown 57 20%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 January 2022.
All research outputs
#7,474,859
of 22,851,489 outputs
Outputs from PLOS ONE
#89,074
of 194,932 outputs
Outputs of similar age
#40,429
of 110,309 outputs
Outputs of similar age from PLOS ONE
#721
of 1,507 outputs
Altmetric has tracked 22,851,489 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 194,932 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 15.1. This one is in the 49th percentile – i.e., 49% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 110,309 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 29th percentile – i.e., 29% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 1,507 others from the same source and published within six weeks on either side of this one. This one is in the 31st percentile – i.e., 31% of its contemporaries scored the same or lower than it.