Inhibition of GA3-induced antheridiogenesis in Anemia phyllitidis by peptidic extracts from male sex organs of Chara |
| |
Authors: | Andrzej Ka?mierczak Janusz Maszewski |
| |
Institution: | (1) Department of Cytophysiology, University of Łódź, ul. Pilarskiego 14, 90-231 Łódź, Poland |
| |
Abstract: | 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. |
| |
Keywords: | Anemia phyllitidis antheridia antheridial peptidic factor Chara tomentosa gibberellins spermatogenesis |
本文献已被 SpringerLink 等数据库收录! |
|