词汇 | cyanobacteria |
释义 | BETA Examples of cyanobacteriacyanobacteria isn’t in the Cambridge Dictionary yet. You can help! How long did it take for life to begin and evolve to cyanobacteria? This suggests a functional relationship between cyanobacteria and other photosynthetic bacteria through fixing of carbon that is eventually consumed by the associated heterotrophic bacterial community. But, viable green algae and cyanobacteria were detected inside buried permanently frozen sediments. The presented study shows that cyanobacteria and green algae do survive within terrestrial permafrost during prolonged periods of time. The organisms we report are cyanobacteria, but potentially any organisms might gain the advantage of this impact-induced habitat. Direct tests of the role of membrane lipid composition in low-temperature-induced photoinhibition and chilling sensitivity in plants and cyanobacteria. The evolution of their oxygenic photosynthesis enabled cyanobacteria to colonize any illuminated habitats where free water was available as an electron donor by photolysis. As a result, later research focused on psychrotolerant cyanobacteria capable of utilizing atmospheric nitrogen. The taxa analyzed include representatives from cyanobacteria, green sulfur, green non-sulfur and purple bacteria. These hypotheses will be tested as additional genomic, biochemical and geological evidence sheds more light on the evolution of nitrogen fixation, photosynthesis and cyanobacteria. However, the information obtained pertains more to the diatom population and to a much lesser extent on the cyanobacteria populations. We report the results of genomic comparisons for six cyanobacteria. This implies that the primary mechanism of iron oxidation in this microbial mat is oxygen production by cyanobacteria. The components of these cyanobacteria-dominated communities were identified and the structure of the communities is described. These smallest fabric elements most likely are formed by the early cementation of a complex consortium of mat-building cyanobacteria, heterotrophic bacteria and eucaryotic algae. In this study, the tolerance of algae and cyanobacteria to freezing, thawing and freezing-drying stresses was evaluated by short-term (days to months) low-temperature experiments. These photosynthetic organisms have bacteriochlorophyll-based pigment systems, but lack the nitrogen-containing phycobilin pigments of cyanobacteria. While the interpretation of these ribbon-like megascopic remains as a eukaryotic alga seems plausible and attractive, they may be colonial cyanobacteria. |
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