Wyniki wyszukiwania

1

Effect of caffeine on spermatogenesis in Chara vulgaris L.

100%

Jaros K., Maszewski J.

Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement

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1997

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tom 39

|

nr 1

2

GA3 content in young and mature antheridia of Chara tomentosa estimated by capillary electrophoresis

100%

Kazmierczak A., Stepinski D.

Folia Histochemica et Cytobiologica

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2005

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tom 43

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nr 1

3

A SEM study of Osmunda regalis L. reproductive biology

86%

Zenkteler E., Idzikowska K., Duczmal M.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1997

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tom 45

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nr 2-4

4

Effect of caffeine on the development of prothallia and antheridia in Anemia phyllitidis

86%

Ambrozek A., Maszewski J., Kazmierczak A.

Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement

|

1997

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tom 39

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nr 1

5

Coinfection of low and high oncogenic human papillomavirus types in women with condylomata acuminata: Preliminary report

72%

Friedek D., Ekiel A., Romanik M., Chelmicki Z.

Bulletin of the Veterinary Institute in Puławy. Supplement

|

2002

6

Inhibition of GA3-induced antheridiogenesis in Anemia phyllitidis by peptidic extracts from male sex organs of Chara

72%

Chroscielewska M., Kazmierczak A., Maszewski J.

Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement

|

1997

|

tom 39

|

nr 1

7

Inhibition of GA3-induced antheridiogenesis in Anemia phyllitidis by peptidic extracts from male sex organs of Chara

72%

Kazmierczak A., Maszewski J.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 3

Low molecular weight peptidic component extracted from maturing male sex organs of Chara tomentosa, capable of inducing increased condensation of chromosomes and profound changes in the cell cycle progression, was applied to gametophytes of Anemia phyllitidis. Morphogenetic effects were studied with regard to cell divisions and GA₃-induced antheridiogenesis. As compared with both the GA⁻₃ and GA⁺₃ control samples, the extract-treated prothallia exhibited considerably lowered number of cells and altered morphology. Antheridial differentiation in prothallia of A. phyllitidis was severely inhibited when peptidic extract was added to medium containing GA₃. Considering endocytotic uptake, evidenced in root meristems, and those effects which have been observed in plant and human cells, the activity of extracts obtained from male sex organs of Chara may be interpreted as inhibitory influence acting via repression or modification of the genetic device of the cells rather, than a direct consequence of the retardation of cell division cycles.

8

GA3 content in antheridia of Chara vulgaris at the proliferative stage and in spermiogenesis estimated by capillary electrophoresis

72%

Kazmierczak A., Kwiatkowska M., Poplonska K.

Folia Histochemica et Cytobiologica

|

1999

|

tom 37

|

nr 1

9

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Wysokość i waga ciała chłopców w okresie dojrzewania

58%

Brzezinski Z.

Roczniki Państwowego Zakładu Higieny

|

1959

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tom 10

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nr 5

10

Cell cycle arrest in antheridial extract-treated root meristems of Allium cepa and Melandrium noctiflorum

58%

Maszewski J., Kazmierczak A., Polit J.

Folia Histochemica et Cytobiologica

|

1998

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tom 36

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nr 1

11

The discovery of sexual reproduction in higher plants

51%

Cresti M., Linskens H. F.

Acta Biologica Cracoviensia. Series Botanica

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1999

|

tom 41

A brief historical overview of the discovery of sexuality in flowering plants (Angiosperms) is given. The former assumption that pictures on Assyrian and Babylonian buildings represent pollination activity has to be corrected by new archeological insights. Antiquity and the Middle Ages delivered no real progress in the knowledge of higher plant sexuality. Real progress is linked to the introduction of light microscopy and experimentation. Investigators such as N. Grew, J. Bobart and R. J. Camerarius provided new information on sex organs in plants. Countercurrents of opinion remained active, based on Aristotle’s and Theophrastus’s beliefs. J.G. Koelreuter and G.B. Amici made breakthroughs in the recognition of the equal role of the sexes in reproduction. Fusion of the sperm and egg nuclei was observed by E. Strasburger. Double fertilization was a multiple discovery by S. Navashin and L. Guignard. New strategies are making the sexual and fertilization processes amenable to genetic manipulation and biotechnology.

Ograniczanie wyników

Effect of caffeine on spermatogenesis in Chara vulgaris L.

GA3 content in young and mature antheridia of Chara tomentosa estimated by capillary electrophoresis

A SEM study of Osmunda regalis L. reproductive biology

Effect of caffeine on the development of prothallia and antheridia in Anemia phyllitidis

Coinfection of low and high oncogenic human papillomavirus types in women with condylomata acuminata: Preliminary report

Inhibition of GA3-induced antheridiogenesis in Anemia phyllitidis by peptidic extracts from male sex organs of Chara

Inhibition of GA3-induced antheridiogenesis in Anemia phyllitidis by peptidic extracts from male sex organs of Chara

GA3 content in antheridia of Chara vulgaris at the proliferative stage and in spermiogenesis estimated by capillary electrophoresis

Wysokość i waga ciała chłopców w okresie dojrzewania

Cell cycle arrest in antheridial extract-treated root meristems of Allium cepa and Melandrium noctiflorum

The discovery of sexual reproduction in higher plants