Electron microscope study of mitosis in Physarum polycephalum

Guttes, Sophie; Güttes, E.; Ellis, Randall P.

doi:10.1016/s0022-5320(68)90038-5

Cited by 82 publications

(21 citation statements)

References 49 publications

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“…5) . No plaques or other forms of MTOC were observed at the poles of the spindle, in accord with the observations of earlier students of plasmodial mitosis (2,7,15) .…”

Section: Resultssupporting

confidence: 91%

INTRANUCLEAR MICROTUBULE ORGANIZING CENTER IN EARLY PROPHASE NUCLEI OF THE PLASMODIUM OF THE SLIME MOLD, PHYSARUM POLYCEPHALUM

Tanaka

1973

The Journal of Cell Biology

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“…5) . No plaques or other forms of MTOC were observed at the poles of the spindle, in accord with the observations of earlier students of plasmodial mitosis (2,7,15) .…”

Section: Resultssupporting

confidence: 91%

INTRANUCLEAR MICROTUBULE ORGANIZING CENTER IN EARLY PROPHASE NUCLEI OF THE PLASMODIUM OF THE SLIME MOLD, PHYSARUM POLYCEPHALUM

Tanaka

1973

The Journal of Cell Biology

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“…On the other hand, the synchronous mitotic divisions in the multinucleate plasmodial stage lack centrioles and the nuclear membrane does not break down during mitosis (Kerr 1976, Guttes et al 1968, Hinchee & Haskins 1980b. Meiotic nuclear divisions are also intra-membranous and lack centrioles (Aldrich 1969).…”

Section: Nuclear Division Chromosome Number and Polyploidymentioning

confidence: 99%

The nuclear reproductive cycle in the myxomycetes: a review

Clark¹,

Haskins²

2013

Mycosphere

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Clark J, Haskins EF 2013 -The nuclear reproductive cycle in the myxomycetes: a review. Mycosphere 4(2), 233-248, Doi 10.5943/mycosphere/4/2/6Our understanding of the taxonomy, ecology and population biology of myxomycetes has been enhanced by investigations of the nuclear reproductive cycle of taxa in this group. These studies have involved light microscopy, electron microscopy, DNA cytophotometric reports and genetic investigations. Heterothallism with its associated life cycle events of syngamy and meiosis is extensively reviewed as revealed by light microscopy, genetics and DNA spectrophotometric analysis of nuclear ploidy levels. Non-heterothallism, i.e., homothallism and apogamy, specifically automixis and its genetical and evolutionary significance is discussed. Nuclear division, chromosomal number and polyploidy in the myxomycetes is also detailed.

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“…The origin of these nuclei is at present unknown . In normal mitosis, chromosomal division is preceded by disintegration of the one, central nucleolus and followed by multifocal reappearance of several, small pronucleolar bodies which gradually coalesce, within less than 90 min after mitosis, to form one central nucleolus again (13,16) . Except for their large size, which exceeds that of interphase nuclei in the same plasmodium, the multinucleolated, labeled nuclei resemble postmitotic nuclei .…”

Section: Resultsmentioning

confidence: 99%

REPLICATION OF NUCLEOLUS-ASSOCIATED DNA DURING "G2 PHASE" IN PHYSARUM POLYCEPHALUM

Güttes

Guttes

1969

The Journal of Cell Biology

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In the myxomycete, Physarum polycephalum, the bulk of nuclear DNA replication occurs during a period of a few hours immediately following upon mitosis . During the remainder of the intermitotic period, incorporation of thymidine-3 H continues at a low rate in the region of the nucleolus (radioautographs) . A few nuclei incorporated thymidine-3 H into the extranucleolar chromatin at a high rate at all times of the intermitotic period . These nuclei were exceptionally large and they frequently contained several small nucleoli of different sizes rather than the one, central nucleolus which is characteristic of a normal interphase nucleus .

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Electron microscope study of mitosis in Physarum polycephalum

Cited by 82 publications

References 49 publications

INTRANUCLEAR MICROTUBULE ORGANIZING CENTER IN EARLY PROPHASE NUCLEI OF THE PLASMODIUM OF THE SLIME MOLD, PHYSARUM POLYCEPHALUM

INTRANUCLEAR MICROTUBULE ORGANIZING CENTER IN EARLY PROPHASE NUCLEI OF THE PLASMODIUM OF THE SLIME MOLD, PHYSARUM POLYCEPHALUM

The nuclear reproductive cycle in the myxomycetes: a review

REPLICATION OF NUCLEOLUS-ASSOCIATED DNA DURING "G2 PHASE" IN PHYSARUM POLYCEPHALUM

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