• Publications
  • Influence
Multiple evolutionary origins of prochlorophytes within the cyanobacterial radiation
TLDR
The results from 16S ribosomal RNA sequence comparisons indicate that prochlorophytes are polyphyletic within the cyanobacterial radiation, and suggest that none of the known species is specifically related to chloroplasts.
Effects of El Niño on local hydrography and growth of the giant kelp, Macrocystis pyrifera, at Santa Catalina Island, California1
Deepened isotherms associated with El Nino resulted in severe nutrient limitation and very low kelp productivity during the last half of 1983. Frond growth rates were so low that terminal blades
RESPONSE OF GLUTAMINE SYNTHETASE GENE TRANSCRIPTION AND ENZYME ACTIVITY TO EXTERNAL NITROGEN SOURCES IN THE DIATOM SKELETONEMA COSTATUM (BACILLARIOPHYCEAE) 1
TLDR
Results confirm that transcription of glnII is induced to assimilate NH4+ derived from reduction of NO3− and promise to be a useful indication of new production by phytoplankton.
Preferential host switching by primate lentiviruses can account for phylogenetic similarity with the primate phylogeny.
TLDR
It is shown that, alternatively, frequent cross-species transmission of PLV, coupled with a tendency for more closely related primate species to exchange viruses "successfully," can result in apparent codivergence.
UNRAVELING THE REGULATION OF NITROGEN ASSIMILATION IN THE MARINE DIATOM THALASSIOSIRA PSEUDONANA (BACILLARIOPHYCEAE): DIURNAL VARIATIONS IN TRANSCRIPT LEVELS FOR FIVE GENES INVOLVED IN NITROGEN
TLDR
The results demonstrate that transcript accumulation is not circadian controlled, but, rather, changes in metabolic pools triggered by light:dark (L:D) transitions may be important in regulating the cellular mRNA levels encoding these key nitrogen assimilating enzymes.
GLUTAMINE SYNTHETASE IN MARINE ALGAE: NEW SURPRISES FROM AN OLD ENZYME
TLDR
The presence of genes encoding GSIII in diatoms and haptophytes indicates that this enzyme family is more broadly distributed in eukaryotes than previously suspected.
Isolation and Characterization of Glutamine Synthetase from the Marine Diatom Skeletonema costatum
TLDR
Results from denaturing gel electrophoresis and gel-filtration chromatography suggest that six 70- kD subunits constitute the 400-kD native enzyme from the marine diatom Skeletonema costatum Grev, and the structure of the diatom GS appears more similar to that of a type found in bacteria than to the type common among other eukaryotes.
Molecular evolution of glutamine synthetase II: Phylogenetic evidence of a non-endosymbiotic gene transfer event early in plant evolution
TLDR
Phylogenetic evidence suggests GSIIB in Chloroplastida evolved by HGT, possibly after the divergence of the primary endosymbiotic lineages, and the isoenzymes may have evolved via different evolutionary processes.
GENETIC VARIABILITY WITHIN A POPULATION AND BETWEEN DIPLOID/HAPLOID TISSUE OF MACROCYSTIS PYRIFERA (PHAEOPHYCEAE) 1
TLDR
The data indicate that DNA fingerprints can be used to measure genetic variation within populations of M. pyrifera because variation of DNA fingerprints associated with meiotic products (spores) of a given individual is small relative to variation observed among individuals within the population.
CHARACTERIZATION OF A cDNA ENCODING GLUTAMINE SYNTHETASE FROM THE MARINE DIATOM SKELETONEMA COSTATUM (BACILLARIOPHYCEAE)
TLDR
Results from Southern blot analysis of genomic DNA suggested that the cDNA isolated in this study was either a member of a small, highly conserved gene family or that there was allelic variation within the region examined, supporting the hypothesis that GS isoenzymes in diatoms, green algae, and vascular plants arose through independent evolutionary events.
...
1
2
3
...