Since the time of its first description, it has been the subject of a multitude of cell biological, biochemical, genetic, and lately physical studies. We investigated the ultrastructure of both mesoplasmodia and non-starved plasmodia and found significantly increased numbers of mitochondria in glucose-deprived mesoplasmodia.
Physarum polycephalum, literally the 'many-headed' slime mold, is a giant multi-nucleated but unicellular protist. Exp Cell Res 156:79–90. P. polycephalum Responds to a Stimulus with a Propagating Change in Contraction Dynamics.. To follow the propagation of a stimulus throughout a P. polycephalum network we first observed networks before and after stimulation using bright-field microscopy over the course of 2 to 3 h. Data were analyzed to extract and track contractions along each tube (Materials and Methods). Physarum polycephalum, literally the 'many-headed' slime mold, is a giant multi–nucleated but unicellular protist. doi: 10.1016/0014-4827(85)90263-0 PubMed CrossRef Google Scholar One unusual feature among the Physarales is the linear multicopy nature of the nuclear rDNA minichromosome, which ranges in size from about 20 kb to 80 kb among species [ 19 – 22 ].
These site-specific changes are quite extensive, comprising ~4% of the residues within mRNAs and ~2% of rRNAs and tRNAs. Fragmentation of the plasmodium into equally sized pieces by low temperatures in the true slime mold Physarum polycephalum : A new morphogenesis March 1999 Protoplasma 206(1):131-136 The order Physarales is of special interest since it contains the two best-studied myxomycete species at the biochemical and molecular levels (Physarum polycephalum and Didymium iridis) [6, 18].
Mitochondrial RNAs in the acellular slime mold Physarum polycephalum contain nucleotides that are not encoded in the mitochondrial genes from which they are transcribed. Satoh H, Ueda T, Kobatake Y (1985) Oscillations in cell shape and size during locomotion and contractile activities of Physarum polycephalum, Dictyostelium discoideum, Amoeba proteus and macrophages. ADVERTISEMENTS: In this article we will discuss about the somatic phase and reproductive phase in the life cycle of physarum with the help of suitable diagrams.
Glucose deprivation in the slime mold Physarum polycephalum leads to a specific morphotype, a highly motile mesoplasmodium.
polycephalum canbegrownquite simply in petri dishes on filter paper, supported on the surface of nutrient medium by glass beads (4-6, 11). The volume of individual mitochondria was the same in both growth forms. Somatic Phase: Zygote Formation: On the onset of conditions favourable for growth the spiny thick-walled resting meiospores germinates releasing usually 1 to 4 biflagellate swarm cells or myxamoebae which […] However, such cultures, even when they have reached their maximal size, contain only about 300 ,ug of deoxyribonucleic acid (DNA).
The enormous size of …
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