of the hyperhaploid maternal complement and abnormal pronuclear formation in a human zygote obtained after intracytoplasmic sperm injection.
Patterning through differential endoreduplication
in epithelial organogenesis of the chordate, Oikopleura dioica.
Our study indicates that the main differences, beside the teosinte fruitcase and its absence in maize, might lay in the process of endoreduplication
in endosperm," Dermastia said.
Water deficit in developing endosperm of maize: cell division and nuclear DNA endoreduplication.
Endoreduplication of nuclear DNA in the developing maize endosperm.
DNA endoreduplication and starch synthesis start between 10 and 12 DAP (Jones et al.
DNA endoreduplication leads to enlarged nuclei with elevated DNA contents.
Maize DNA endoreduplication starts at [approximately equals] 10 DAP and peaks at 16 DAP, with the presence of at least four DNA content classes (12, 24, 48, 96 C or higher).
Maize endosperm DNA endoreduplication was significantly reduced when water stress treatments were given from 1 to 10 DAP (Artlip et al.
The magnitude of DNA endoreduplication was determined with a Coulter Epics flow cytometer (Coulter Corp.
Unfortunately, the flow cytometric procedure employed in this study did not permit us to distinguish 6 C cells that are being committed to endoreduplication from those that remain mitotic.
We have shown that the magnitude of DNA endoreduplication
is progressively reduced and peak mitotic index is delayed in the endosperm cells of kernels exposed to 4- and 6-d HTTs (Engelen-Eigles and Jones, 2000).
Diepoxybutane (DEB) test remains the classical "gold standard" test for diagnosis involving the detection of chromosomal breaks, gaps, rearrangements, radials, exchange, and endoreduplications
in peripheral blood cells following culturing with clastogenic agents such as DEB or mitomycin-C [9,10].
In relation to numerical CAs, only metaphases with a loss or gain of one or two chromosomes and endoreduplications were considered.
Pesticides may be able to induce a new S phase in the cell cycle and bypass mitosis, explaining the finding of endoreduplications only in the exposed group.