| bacterial filament formation, a defense mechanism against flagellate grazing, is growth rate controlled in bacteria of different phyla. | a facultatively filamentous bacterium was isolated from eutrophic lake water and was identified as flectobacillus sp. strain mwh38 (a member of the cytophaga-flavobacterium-bacteroides phylum) by comparative 16s rrna gene sequence analysis. filament formation by flectobacillus sp. strain mwh38 and filament formation by flectobacillus major, the closest known relative of strain mwh38, were studied in chemostat cultures under grazing pressure by the bacterivorous flagellate ochromonas sp. strain d ... | 1999 | 9872755 |
| analysis of bacterial core communities in the central baltic by comparative rna-dna-based fingerprinting provides links to structure-function relationships. | understanding structure-function links of microbial communities is a central theme of microbial ecology since its beginning. to this end, we studied the spatial variability of the bacterioplankton community structure and composition across the central baltic sea at four stations, which were up to 450 km apart and at a depth profile representative for the central part (gotland deep, 235 m). bacterial community structure was followed by 16s ribosomal rna (rrna)- and 16s rrna gene-based fingerprint ... | 2011 | 21697960 |
| analysis of bacterial core communities in the central baltic by comparative rna-dna-based fingerprinting provides links to structure-function relationships. | understanding structure-function links of microbial communities is a central theme of microbial ecology since its beginning. to this end, we studied the spatial variability of the bacterioplankton community structure and composition across the central baltic sea at four stations, which were up to 450 km apart and at a depth profile representative for the central part (gotland deep, 235 m). bacterial community structure was followed by 16s ribosomal rna (rrna)- and 16s rrna gene-based fingerprint ... | 2011 | 21697960 |
| search and discovery strategies for biotechnology: the paradigm shift. | profound changes are occurring in the strategies that biotechnology-based industries are deploying in the search for exploitable biology and to discover new products and develop new or improved processes. the advances that have been made in the past decade in areas such as combinatorial chemistry, combinatorial biosynthesis, metabolic pathway engineering, gene shuffling, and directed evolution of proteins have caused some companies to consider withdrawing from natural product screening. in this ... | 2000 | 10974127 |
| microbial diversity of a heavily polluted microbial mat and its community changes following degradation of petroleum compounds. | we studied the microbial diversity of benthic cyanobacterial mats inhabiting a heavily polluted site in a coastal stream (wadi gaza) and monitored the microbial community response induced by exposure to and degradation of four model petroleum compounds in the laboratory. phormidium- and oscillatoria-like cyanobacterial morphotypes were dominant in the field. bacteria belonging to different groups, mainly the cytophaga-flavobacterium-bacteriodes group, the gamma and beta subclasses of the class p ... | 2002 | 11916684 |
| genetic diversity of the biofilm covering montacuta ferruginosa (mollusca, bivalvia) as evaluated by denaturing gradient gel electrophoresis analysis and cloning of pcr-amplified gene fragments coding for 16s rrna. | the shell of the bivalve montacuta ferruginosa, a symbiont living in the burrow of an echinoid, is covered with a rust-colored biofilm. this biofilm includes different morphotypes of bacteria that are encrusted with a mineral rich in ferric ion and phosphate. the aim of this research was to determine the genetic diversity and phylogenetic affiliation of the biofilm bacteria. also, the possible roles of the microorganisms in the processes of mineral deposition within the biofilm, as well as their ... | 1998 | 9726898 |
| kinetic bias in estimates of coastal picoplankton community structure obtained by measurements of small-subunit rrna gene pcr amplicon length heterogeneity | marine bacterioplankton diversity was examined by quantifying natural length variation in the 5' domain of small-subunit (ssu) rrna genes (rdna) amplified by pcr from a dna sample from the oregon coast. this new technique, length heterogeneity analysis by pcr (lh-pcr), determines the relative proportions of amplicons originating from different organisms by measuring the fluorescence emission of a labeled primer used in the amplification reaction. relationships between the sizes of amplicons and ... | 1998 | 9797317 |