DFG Nationallizenz: Mitosis and cytokinesis in androgonidia...

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Jahr

Birchem, Regina, Kochert, G.

Mitosis and cytokinesis in androgonidia ofVolvox carteri f.weismannia
in: Protoplasma , ISSN 1615-6102, Vol. 100 (1. 1979), p. 1-12
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1979

Summary Reproductive cells (androgonidia) ofVolvox carteri f.weismannia divide to form packets of 64 or 128 sperm cells. The androgonidium morphology, stages of mitosis, and cytokinesis were examined by electron microscopy. The biflagellate androgonidium loses its flagella before mitosis but the flagellar bases at the anterior end of the cell are retained. Two additional basal bodies are formed and the nucleus migrates from its central position to the area of the basal bodies before mitosis begins. A five-layered kinetochore is present on the chromosomes and remnant nucleolar material persists during mitosis. A furrow at the chloroplast end of the cell and the formation of phycoplast microtubules and vesicles signal the beginning of cytokinesis at early telophase. The cells maintain cytoplasmic connections until after the packet of sperm cells completes its development.

beteiligte Personen:	Birchem, Regina , Kochert, G.
Format:	Elektronisch
Erschienen:	1979.
Serie:	Springer Online Journal Archives 1860-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1007/BF01276296

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Jahr

Al-Hasani, Hadi, Jaenicke, Lothar

Characterization of the sex-inducer glycoprotein ofVolvox carteri f.weismannia
in: Sexual plant reproduction , ISSN 1432-2145, Vol. 5 (1. 1992), p. 8-12
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1992

Summary Sexual inducer pheromones fromVolvox carten f.weismannia, strains 65–30(12) and 1B were purified and characterized as glycoproteins with apparent molecular weights of 27 kDa and 28.5 kDa, respectively. This subspecies yielded 20–40 times more pheromone based on weight per spheroid... mehr

beteiligte Personen:	Al-Hasani, Hadi , Jaenicke, Lothar
Format:	Elektronisch
Erschienen:	1992.
Serie:	Springer Online Journal Archives 1860-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1007/BF00714553

Pringsheim, E. G.

Identification and cultivation of EuropeanVolvox spp.
in: Antonie van Leeuwenhoek , ISSN 1572-9699, Vol. 36 (1. 1970), p. 33-43
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1970

Abstract The three European species ofVolvox have repeatedly been described, also from other countries. There have remained, however, some open questions, particularly in connexion with the morphological differences betweenV. aureus andV. tertius. These species, up to now, could not readily be... mehr

beteiligte Personen:	Pringsheim, E. G.
Format:	Elektronisch
Erschienen:	1970.
Serie:	Springer Online Journal Archives 1860-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1007/BF02069005

Pagliarini, M.S., Takayama, S.Y., ...

Failure of cytokinesis and 2n gamete formation in Brazilian accessions of Paspalum
in: Euphytica , ISSN 1573-5060, ZDB-ID 2012322X Vol. 108 (2. 1999), p. 129-135
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1999

Abstract Cytological analysis on 112 Brazilian accessions of Paspalum showed that 52 were affected by failure of first or second cytokinesis during microsporogenesis. When the failure of cytokinesis occurred only in the first division and in the second division the cytokinesis was normal, a dyad... mehr

beteiligte Personen:	Pagliarini, M.S. , Takayama, S.Y. , de Freitas, P.M. , Carraro, L.R. , Adamowski, E.V. , Silva, N. , Batista, L.A.R.
Format:	Elektronisch
Erschienen:	1999.
Serie:	Springer Online Journal Archives 1860-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1023/A:1003660327223

Sisken, Jesse E.

The effects of p-DL-fluorophenylalanine on chromosome movement and cytokinesis of human amnion cells in culture
in: Chromosoma , ISSN 1432-0886, Vol. 44 (1. 1973), p. 91-98
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1973

Abstract An analysis is presented of time lapse motion picture films showing the effects of DL-p-fluorophenylalanine (PFPA) on chromosome movement in cultured human amnion cells. The data indicate that PFPA has the unusual effect of slowing the rate at which chromosomes move in anaphases which... mehr

beteiligte Personen:	Sisken, Jesse E.
Format:	Elektronisch
Erschienen:	1973.
Serie:	Springer Online Journal Archives 1860-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1007/BF00372575

Bement, William M.., Capco, David G..

Analysis of inducible contractile rings suggests a role for protein kinase C in embryonic cytokinesis and wound healing
in: Cell Motility and the Cytoskeleton, in: Cell Motility and the Cytoskeleton . - New York, NY : Wiley, ISSN 0886-1544, ZDB-ID 1473796-6 Vol. 20 (2. 1991), p. 145-157
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1991

A semi-in vitro system derived from Xenopus oocytes which allows induction of contractile ring (CR) formation and closure is described and exploited to elucidate regulatory and structural features of cytokinesis. The inducible CRs (ICRs) are composed of actin filaments and closure is actin... mehr

beteiligte Personen:	Bement, William M.. , Capco, David G..
Format:	Elektronisch
Erschienen:	1991.
Serie:	Wiley InterScience Backfile Collection 1832-2000 [Dig. Serial]
Schlagwörter:
URL:	http://dx.doi.org/10.1002/cm.970200207