Gene expression during bacterivorous growth of a widespread marine heterotrophic flagellate

Patterns of genetic diversity in the marine heterotrophic flagellate Oxyrrhis marina (Alveolata: Dinophyceae).

Oxyrrhis marina is an important model in ecological studies of free-living protists. Despite this, O. marina has rarely been studied in the environment and no explicit distributional studies exist. Further, phylogenetic data for a small number of isolates indicate that O. marina constitutes two divergent lineages. Here, we quantify phylogenetic variation between 58 globally distributed O. marin...

commensal, Mycophagous Heterotrophic Flagellate with a Doubled Kinetid

The name Cholamonas cyrtodiopsidis gen. n., sp. n., is created for a mycophagous heterotrophic flagellate isolated and cultivated from the intestine of a diopsid fly. Flagellates were subanteriorly biflagellate, uninucleate, and naked. Golgi dictyosomes were anterior to the nucleus, and a reticulate paranuclear body posterior to it. Two groups of refractile bodies were present, one at the anter...

Expression of growth hormone gene during early development of Siberian sturgeon (Acipenser baerii)

The mRNA expression of growth hormone (GH) gene in early development stages of Siberian sturgeon was investigated using RT-PCR method. Samples were collected from unfertilized eggs up to 50 days post hatched (dph) larvae in 11 different times. Ribosomal protein L6 (RPL6) transcripts were used as the internal standard during quantification of GH mRNA expression. The results showed that the GH mR...

A comparison of the growth kinetics of six marine heterotrophic nanoflagellates fed with one bacterial species

The growth kinetics of 6 species of marine heterotrophic nanoflagellates (5 to 13 pm) were compared. The maximum spec~fic growth rates (p,,,) of the flagellates ranged from 0.035 to 0.21 h ' and the half-saturation constants (K,) ranged from 1.1 to 45 X 106 bacterial cells ml-' Theoretical threshold concentrations were calculated for each flagellate and the values of these generally ranged from...

Phylogenetic expression profiling reveals widespread coordinated evolution of gene expression