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1

Autoradiographic studies on mucilage synthesis in Chara vulgaris antheridium with the use of 3H-fucose in total darkness and light

100%
Gosek A.
Folia Histochemica et Cytobiologica
|
1996
|
tom 34
|
nr 3-4
2

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

100%
Kazmierczak A., Stepinski D.
Folia Histochemica et Cytobiologica
|
2005
|
tom 43
|
nr 1
3

Changes in prothalli of Anemia phyllitidis during GA-induced formation of antheridia

100%
Kazmierczak A.
Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement
|
1997
|
tom 39
|
nr 1
4

Increase in cAMP level stimulates elongation growth of thallus while its decrease accelerates development of Chara vulgaris L. oogonia and antheridia

86%
Aniol P., Godlewski M., Domanska A.
Acta Biologica Cracoviensia. Series Botanica. Supplement
|
2000
|
tom 42
|
nr 1
5

Autoradiographic studies on 3H-fucose incorporation into manubria and its translocation to antheridial space during spermatogenesis in Chara vulgaris L.

86%
Gosek A., Kwiatkowska M.
Folia Histochemica et Cytobiologica
|
1993
|
tom 31
|
nr 4
6

Influence of symplasmic isolation on circadian rhythm of 3 H leucine incorporation to manubrial cells of Chara vulgaris antheridia

86%
Kwiatkowska M., Poplonska K., Gosek A., Kazmierczak A.
Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement
|
1997
|
tom 39
|
nr 1
7

The influence of the disappearance of plasmodesmal connections between antheridia and thallus on 3H-GA3 transport

86%
Kwiatkowska M., Malinowski S.
Folia Histochemica et Cytobiologica
|
1995
|
tom 33
|
nr 1
8

Studies on morphology and metabolism of prothalli during GA3-induced formation of antheridia in Anemia phyllitidis

86%
Kazmierczak A.
Acta Physiologiae Plantarum
|
1998
|
tom 20
|
nr 3
In Schizaeaceae ferns, including Anemia phyllitidis, formation of antheridia is known to be induced by exogenously applied gibberellic acid. Also present studies show that GA₃ (10⁻⁵ mol·dm⁻³) modifies the development of gametophytes of Anemia phyllitidis. Simultaneously with formation of antheridia, they exhibit lower number of cells but only slightly lowered profile areas and lengths of prothalli. Growth in size of individual cells compensates for lowered division frequency. Cytophotometric measurements reveal no essential changes in the DNA content in vegetative cells of the control and GA₃-stimulated gametophytes. It remains at haploid level and therefore it is assumed that cell cycle is blocked at G1 phase. Application of GA₃ increases the total amount of proteins. CZE (Capillary Zone Electrophoresis) separation of peptides extracted from control and GA₃-treated prothalli indicates the differences in the ratio of their particular forms. In GA₃-treated gametophytes the activities of acid and basic phosphatases, contents of carbohydrates (glucose, starch), chlorophyll, the number of chloroplasts and dry mass of prothalli are increased. GA₃-intensified metabolism, evidenced in gametophytes of A. phyllitidis, may be interpreted as a stimulatory mechanism which influences metabolic pathways involved in forming, developing and maturing of male sex organs.
9

Further studies on the role of GAs and the symplasmic isolation in the regulation of gametogenesis in Chara vulgaris

86%
Kwiatkowska M., Kazmierczak A., Poplonska K., Wojtczak A., Malinowski S.
Folia Morphologica
|
1998
|
tom 57
|
nr 1
10

Effect of symplasmic isolation and antigibberellin treatment on morphogenesis in Chara

72%
Kwiatkowska M.
Folia Histochemica et Cytobiologica
|
1995
|
tom 33
|
nr 2
11

Ultrastructural and autoradiographic study of Chara vulgaris Manubria

72%
Kwiatkowska M., Wojtczak A., Poplonska K.
Acta Biologica Cracoviensia. Series Botanica
|
2002
|
tom 44
Ultrastructural changes of manubria of Chara vulgaris during spermiogenesis were studied. The changes (as compared to the antheridial filament proliferation stage) involve thickening of the content of secretive vesicles and changes in their consistency, the disappearance of rough endoplasmic reticulum (ER) and appearance of smooth ER, increases in the number and size of plastoglobules in plastids, condensation of mitochondria, and significant cell vacuolization. Autoradiography with 3H-fucose pulse incubation showed that during spermatogenesis it was incorporated into the manubria. Their radioactivity decreased after 2 h postincubation in nonradioactive fucose during spermiogenesis. This was not observed during proliferation of antheridial filament cells. It is suggested that polysaccharide secretion into the internal antheridial space increases during spermiogenesis, perhaps connected with the thickening of secretive vesicle content observed by electron microscopy.
12

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
|
1997
|
tom 19
|
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.
13

Plasmodesmata structure and role in cell communication as well as their changes in development of antheridia of Chara species

72%
Kwiatkowska M.
Biological Letters
|
2005
|
tom 42
|
nr 2 Spec.Vol.
14

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
15

Velocity of cytoplasm streaming in basal and subbasal cells of antheridium as well as internodal cells of pleuridium in Chara vulgaris L. and GA3 influence on it. Videomicroscopic observations

72%
Malinowski S., Kwiatkowska M., Poplonska K., Knake S., Sobala A.
Acta Societatis Botanicorum Poloniae
|
2002
|
tom 71
|
nr 4
16

Disappearance of 3H-leucine incorporation circadian rhythm induced by symplasmic isolation of Chara vulgaris antheridium from thallus

72%
Kwiatkowska M., Poplonska K., Gosek A.
Folia Histochemica et Cytobiologica
|
1999
|
tom 37
|
nr 3
17

Comparative studies on the amount and concentration of antheridial mucilage during the successive stages of spermatogenesis in Chara tomentosa and Chara contraria

58%
Gosek A.
Bulletin of the Polish Academy of Sciences. Biological Sciences
|
1993
|
tom 41
|
nr 1
18

DNA endoreduplication, RNA and protein synthesis during growth and development of the antheridial basal cell in Chara vulgaris L.

58%
Malinowski S., Maszewski J.
Folia Histochemica et Cytobiologica
|
1994
|
tom 32
|
nr 2
19

Effects of antheridial peptides derived from Chara on cell cycle-regulated processes in human and yeast cells

58%
Maszewski J., Maszewska M., Polit J.
Folia Histochemica et Cytobiologica
|
1999
|
tom 37
|
nr 3
20

The growth of internal volume in young antheridia of some Chara species in relation to changes in antheridial mucilage concentration during 3-day continuous darkness

51%
Gosek A.
Bulletin of the Polish Academy of Sciences. Biological Sciences
|
1994
|
tom 42
|
nr 3
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