Exploiting composting biodiversity: study of the persistent and biotechnologically relevant microorganisms from lignocellulose-based composting.
The composting ecosystem is a suitable source for the discovery of novel microorganisms and secondary metabolites. This work analyzes the identity of microbial community that persists throughout lignocellulose-based composting, evaluates their metabolic activities and studies the capability of selected isolates for composting bioaugmentation. Bacterial species of the phyla Firmicutes, Actinobacteria and Proteobacteria and fungi of the phylum Ascomycota were ubiquitous throughout the composting. The species Arthrobacter russicus, Microbacterium gubbeenense, Ochrocladosporium frigidarii and Cladosporium lignicola are detected for the first time in this ecosystem. In addition, several bacterial and fungal isolates exhibited a wide range of metabolic capabilities such as polymers (lignocellulose, protein, lipids, pectin and starch) breakdown and phosphate-solubilization that may find many biotechnological applications. In particular, Streptomyces albus BM292, Gibellulopsis nigrescens FM1397 and FM1411, Bacillus licheniformis BT575, Bacillus smithii AT907 and Alternaria tenuissima FM1385 exhibited a great potential as inoculants for composting bioaugmentation.
Unit of Microbiology, Department of Biology and Geology, CITE II-B, University of Almeria, Agrifood Campus of International Excellence ceiA3, 04120 Almeria, Spain.
Macarena
M
Jurado
Unit of Microbiology, Department of Biology and Geology, CITE II-B, University of Almeria, Agrifood Campus of International Excellence ceiA3, 04120 Almeria, Spain. Electronic address: mllopez@ual.es.
María J
MJ
López
Unit of Microbiology, Department of Biology and Geology, CITE II-B, University of Almeria, Agrifood Campus of International Excellence ceiA3, 04120 Almeria, Spain.
Francisca
F
Suárez-Estrella
Unit of Microbiology, Department of Biology and Geology, CITE II-B, University of Almeria, Agrifood Campus of International Excellence ceiA3, 04120 Almeria, Spain.
María C
MC
Vargas-García
Unit of Microbiology, Department of Biology and Geology, CITE II-B, University of Almeria, Agrifood Campus of International Excellence ceiA3, 04120 Almeria, Spain.
Juan A
JA
López-González
Unit of Microbiology, Department of Biology and Geology, CITE II-B, University of Almeria, Agrifood Campus of International Excellence ceiA3, 04120 Almeria, Spain.
Joaquín
J
Moreno
D001419:Bacteria / Q000254:growth & development* / Q000302:isolation & purification; D044822:Biodiversity; D001709:Biotechnology; D001711:Biotransformation; D015169:Colony Count, Microbial; D008031:Lignin / Q000378:metabolism*; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012987:Soil
D012336:RNA, Ribosomal, 16S; D012987:Soil; C036909:lignocellulose; D008031:Lignin
Bioaugmentation; Lignocellulolytic; Phosphate-solubilizing; Proteolytic; Ubiquitous