scholarly journals Different Doses of the Enhanced UV-B Radiation Effects on Wheat Somatic Cell Division

CellBio ◽  
2015 ◽  
Vol 04 (02) ◽  
pp. 30-36
Author(s):  
Feifeng Liu ◽  
Huize Chen ◽  
Rong Han
Keyword(s):  
Cell Division ◽  
Somatic Cell ◽  
Radiation Effects ◽  
Different Doses

Dosage dependence of maternal contribution to somatic cell division in Drosophila melanogaster

Development ◽  
1991 ◽  
Vol 113 (4) ◽  
pp. 1357-1364 ◽  
Author(s):  
M. Carmena ◽  
C. Gonzalez ◽  
J. Casal ◽  
P. Ripoll
Keyword(s):  
Drosophila Melanogaster ◽  
Cell Division ◽  
Somatic Cell ◽  
Early Development ◽  
Normal Cell ◽  
Chromosome Behaviour ◽  
Wild Type ◽  
Maternal Contribution ◽  
Different Doses ◽  
Chromosome Nondisjunction

Most mitotic mutants in Drosophila do not lead to lethality in early development despite the highly abnormal chromosome behaviour that they elicit. This has been explained as being the effect of maternally provided wild-type products. We have tested this hypothesis by studying cuticular clones derived from cells in which there has been loss of a marked Y chromosome due to chromosome nondisjunction in individuals homozygous for the mutation abnormal spindle who are progeny of heterozygous mothers. We have found that the size and frequency of these clones are higher than in control flies. Furthermore, by analysing flies whose female parents have different doses of the asp+ gene, we have found that there is a correlation between the amount of maternally contributed asp+ product and the frequency and size of cuticular clones. We have also estimated the time in development when the first mitotic mistakes take place, i.e. the time when maternal products are no longer sufficient to carry out normal cell division.

Acquisition of embryogenic competency does not require cell division in carrot somatic cell

2012 ◽  
Vol 126 (2) ◽  
pp. 243-250 ◽  
Author(s):  
Akira Kikuchi ◽  
Masashi Asahina ◽  
Motoki Tanaka ◽  
Shinobu Satoh ◽  
Hiroshi Kamada
Keyword(s):  
Cell Division ◽  
Somatic Cell ◽  
Embryogenic Competency

Flavanols in Somatic Cell Division and Male Meiosis of Tea (Camellia sinensis) Anthers

Plant Biology ◽  
2005 ◽  
Vol 7 (2) ◽  
pp. 168-175 ◽  
Author(s):  
W. Feucht ◽  
D. Treutter ◽  
H. Dithmar ◽  
J. Polster
Keyword(s):  
Cell Division ◽  
Somatic Cell ◽  
Camellia Sinensis ◽  
Male Meiosis

The Relevance of Intra-Cellular Damage to Effects in the Complex Organism

1968 ◽  
Vol 70 (2) ◽  
pp. 152-162
Author(s):  
R. H. Mole
Keyword(s):  
Cell Division ◽  
Mammalian Cells ◽  
Radiation Effects ◽  
Specific Activity ◽  
A Priori ◽  
High Specific Activity ◽  
Cellular Damage ◽  
Complex Organism ◽  
Interesting Approach

As the three previous papers in this Symposium have shown (Ord and Stocken 1968; Evans 1968; Court-Brown 1968) the exploration of radiation effects within the cell has its own intrinsic fascination quite apart from its relevance to an understanding of the phenomena which may be observed after irradiation of the complex organism, vertebrate or invertebrate. Whitmore (cf. Whitmore Gulyas and Botond 1965) has been one of the pioneer workers on a previously unsuspected phenomenon, the quantitatively substantial recovery of the ability to divide which occurs within the first hour or two after exposure to low LET radiation. In cultures of mammalian cells in vitro this kind of recovery was shown to have nothing to do with cell division, to occur at all stages of the cell cycle, and to be little, if at all, affected by a reduction in temperature which would be expected a priori to modify profoundly the rate of chemical reactions. Whitmore's technique for synchronising asynchronously dividing cell cultures by the selective suicide of DNA synthesising cells following the incorporation of radioactively labelled DNA precursors with high specific activity has a wide application (Whitmore and Gulyas 1966). Workers from his laboratory have proposed an interesting approach to the real meaning of “ability to divide” and “recovery” based on the idea that there is a certain probability of failure at each cell division and that this probability may be permanently increased by exposure to radiation (Till, McCulloch and Siminovitch 1964). Thus radiation damage may be expressed by failure of cell division not only at the first or second divisions after exposure but also at any subsequent division in the distant future.

scholarly journals Chromosomal Aberrations Induced by Carbaryl in Root Meristem Cells of Pisum Sativum L.

2017 ◽  
Vol 14 (3) ◽  
pp. 985-987
Author(s):  
Khushboo Kushwah ◽  
Ravendra Singh Chauhan ◽  
R.K. Sarbhoy ◽  
Harshal Kumar
Keyword(s):  
Cell Division ◽  
Pisum Sativum ◽  
Somatic Cell ◽  
Chromosomal Aberrations ◽  
Filter Paper ◽  
Root Meristem ◽  
Distilled Water ◽  
Root Tips ◽  
Uniform Size ◽  
Pisum Sativum L

ABSTRACT: Carbaryl, which is also known as sevin, induced mitostatic and turbagenic leading to clastogenic effects in the root meristem cells of Pisum sativum. The study was conducted at Department of Botany, Agra College, Agra. Seeds of uniform size of Pisum sativum were germinated on moist filter paper in petriplates. 1to 2 mm root tips were cut and treated with different concentrations (0.1, 0.2, 0.3,0.5%) of carbaryl prepared in distilled water for varying duration (3 to 9 hrs.) of time. It has mitodepressive and mitostatic effects on somatic cell division. These effects are directly proportional to concentration and duration. Common clastogenic effects are stickiness, condensation, breakage and bridges etc. Present investigation clearly revealed that carbaryl showed clastogenic and mitostatic effects. So, it should be used with precautions as it can be hazardous to both targeted and non-targeted biota.

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