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Formation and reversion of Streptomycete protoplasts: cultural condition and morphological study.
Combinations of appropriate concentrations of MgCl2 and CaCl2 were significantly effective in the reversion as well as in the stability of protoplasts.
A plasmid involved in chloramphenicol production in Streptomyces venezuelae: evidence from genetic mapping.
- H. Akagawa, M. Okanishi, H. Umezawa
- Biology, EngineeringJournal of general microbiology
- 1 October 1975
It is concluded that chloramphenicol production is controlled by a plasmid that appeared to be non-transferable in conjugation.
A Modified Regeneration Method for Streptomycete Protoplasts
The emphasis in the present paper is on a newly established medium and the procedure for, regeneration which differs from that reported by Baltz, as well as on the effect of temperature on the stability of protoplasts.
Molecular phylogeny based on increased number of species and genes revealed more robust family-level systematics of the order Euryalida (Echinodermata: Ophiuroidea).
Molecular phylogeny of the order Euryalida (Echinodermata: Ophiuroidea), based on mitochondrial and nuclear ribosomal genes.
A new cryptic species of Asteronyx Müller and Troschel, 1842 (Echinodermata: Ophiuroidea), based on molecular phylogeny and morphology, from off Pacific Coast of Japan
Non-destructive morphological observations of the fleshy brittle star, Asteronyx loveni using micro-computed tomography (Echinodermata, Ophiuroidea, Euryalida)
The first morphological observation of a euryalid brittle star, Asteronyx loveni, using non-destructive X-ray micro-computed tomography (µCT) was performed and shape and positional arrangement of taxonomically important ossicles were clearly observed without any damage to the body.
A new genus Squamophis of Asteroschematidae (Echinodermata, Ophiuroidea, Euryalida) from Australia
Squamophis, a new genus of brittle star is described and is distinguished from the other genera of the family Asteroschematidae by the following characters: each radial shield is single-layered and is completely covered by plate-shaped epidermal ossicles.
Intergenus protoplast fusion between Streptomyces and Micromonospora with reference to the distribution of parental characteristics in the fusants.
Methods for the Determination of Deoxyribonucleic Acid Homologies in Streptomyces
Incubation of DNA-loaded filters in a solution of 50% formamide containing 6x standard saline citrate, at 48 C for 40 hr, was judged to be the best set of conditions tested based on relatively good retention of immobilized DNA, very low hybridization with unrelated DNA of a similarly high T(m) (from Sarcina lutea), and the formation of complexes similar in thermal stability to the native DNA.