Release of bacterial DNA by marine nanoflagellates, an intermediate step in phophorus regeneration
Article Abstract:
An investigation was conducted to determine whether the dissolved DNA released by nanoflagellates contributes to the pool of dissolved phosphorus in the sea. Experiments were conducted in a continuous culture simulating the microbial food web in the marine environment. The results showed a fivefold increase in dissolved DNA in the presence of a nanoflagellate. Radiolabelled DNA tracing showed that the phosphorus of the released DNA could be assimilated by other microorganisms. These results indicate that phagotrophic excretion by marine flagellates is an important source of dissolved DNA and phosphorus.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Organophosphate utilization by wild-type strain of Pseudomonas fluorescens
Article Abstract:
The ability of Pseudomonas fluorescens to utilize aminoalkylphosphonates, hydroxyalkylphosphonates, oxoalkylphosphonates and phosphono dipeptides as sole sources of phosphorus, nitrogen or carbon was investigated. Among the substrates tested, only DL-amino(phenyl)methylphosphonate, 2-aminoethylphosphonate and diisopropyl 9-aminofluoren-9-ylphosphonate oxalate could serve as sole source of phosphorus. However, P. fluorescens could use organophosphates as sole sources of nitrogen or carbon when they are not used as phosphorus sources.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Organophosphonate utilization by the wild-type strain of Penicillium notatum
Article Abstract:
Penicillium notatum was able to grow using a number of structurally diverse organophosphonates as the sole phosphorus source, suggesting that this fungus could make a significant contribution to organophosphonate biodegradation. P. notatum, which may have an inducible ability to degrade phosphonates, could not degrade the phosphanates when given as the sole carbon or nitrogen source. Although the herbicide glyphosate could inhibit growth of P. notatum, it was degraded if administered in a sublethal dose.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Conditional expression of Mycobacterium smegmatis ftsZ, an essential cell division gene. Identification of the putrescine biosynthetic genes in Pseudomonas aeruginosa and characterization of agmatine deiminase and N-carbamoylputrescine amidohydrolase of the argine decarboxylase pathway
- Abstracts: DNA deamination mediates innate immunity to retroviral infection
- Abstracts: Construction of a 3-chlorobiphenyl-utilizing recombinant from an intergeneric mating. Metabolic and energetic control of Pseudomonas mendocina growth during transitions from aerobic to oxygen-limited conditions in chemostat cultures
- Abstracts: Variability profiles for line transect bird censuses in a tropical dry forest in Mexico. Impact of pasture development on winter bird communities in Belize, Central America
- Abstracts: Inheritance of the white and pied plumage color pattern in the Indian peafowl (Pavo cristatus). Identifying the ptilopody (feathered shank) loci of the chicken