Od posvátného indického banyánu k voňavému cedru libanonskému - vezmeme vás na ilustrovanou pouť za stromy, které jsou základem historie, ovlivňují generace lidí, duchovní život i folklor. Úžasná kniha, která vám objasní, jak klíčovou roli stromy hrají v každé oblasti lidského života. S nádhernými ilustracemi Lucille Clercové.

Taxonomy and phylogeny of the Antrodia serialis group are revised with morphological, ecological, and geographic data, partial translation elongation factor 1-α (tef1) gene sequences, and nuc rDNA ITS1-5.8S-ITS2-28S sequences. The group contains 13 species found in boreal and temperate zones of the Northern Hemisphere. The species are limited to certain geographic areas within Eurasia and North America. The traditional morphology-based concept of A. serialis covers at least four closely related species: A. serialis s. str. in Eurasia, A. angusta, sp. nov., in East Asia, A. serrata, sp. nov., in the American Northeast, and A. calcitrosa, sp. nov., in the American Northwest. They all are associated mostly with Picea spp. and show small, but stable morphological differences from each other. In addition, A. morganii, comb. nov., inhabiting wood of Populus spp., occurs in North America, and Antrodia alaskana, comb. nov., a large-pored species, macroscopically similar to A. variiformis, is distributed along the Pacific coast of North America. The pine-dwelling A. flavimontis, sp. nov., similar to A. primaeva from Eurasia, is so far known only from the eastern part of the Rocky Mountains (Utah and Wyoming).

• MeSH
• Antrodia classification   genetics   MeSH
• DNA, Fungal genetics   MeSH
• Peptide Elongation Factor 1 genetics   MeSH
• Phylogeny * MeSH
• DNA, Ribosomal Spacer genetics   MeSH
• Mycological Typing Techniques MeSH
• DNA, Ribosomal genetics   MeSH
• Sequence Analysis, DNA MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH

While it is known that several Actinobacteria produce enzymes that decompose polysaccharides or phenolic compounds in dead plant biomass, the occurrence of these traits in the environment remains largely unclear. The aim of this work was to screen isolated actinobacterial strains to explore their ability to produce extracellular enzymes that participate in the degradation of polysaccharides and their ability to cometabolically transform phenolic compounds of various complexities. Actinobacterial strains were isolated from meadow and forest soils and screened for their ability to grow on lignocellulose. The potential to transform (14)C-labelled phenolic substrates (dehydrogenation polymer (DHP), lignin and catechol) and to produce a range of extracellular, hydrolytic enzymes was investigated in three strains of Streptomyces spp. that possessed high lignocellulose degrading activity. Isolated strains showed high variation in their ability to produce cellulose- and hemicellulose-degrading enzymes and were able to mineralise up to 1.1% and to solubilise up to 4% of poplar lignin and to mineralise up to 11.4% and to solubilise up to 64% of catechol, while only minimal mineralisation of DHP was observed. The results confirm the potential importance of Actinobacteria in lignocellulose degradation, although it is likely that the decomposition of biopolymers is limited to strains that represent only a minor portion of the entire community, while the range of simple, carbon-containing compounds that serve as sources for actinobacterial growth is relatively wide.

• MeSH
• Bacterial Proteins biosynthesis   MeSH
• beta-Glucosidase biosynthesis   MeSH
• Biodegradation, Environmental MeSH
• Biomass MeSH
• Cellulose 1,4-beta-Cellobiosidase biosynthesis   MeSH
• Cellulose metabolism   MeSH
• Hydrolysis MeSH
• Catechols metabolism   MeSH
• Kinetics MeSH
• Lignin metabolism   MeSH
• Populus chemistry   MeSH
• Soil Microbiology * MeSH
• Carbon Radioisotopes MeSH
• Streptomyces enzymology   isolation & purification   MeSH
• Trees chemistry   MeSH
• Xylosidases biosynthesis   MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH