Effects of cycloheximide on preprophase bands and prophase spindles in onion (Allium cepa L.) root tip cells

PROTOPLASMA ◽  
1996 ◽  
Vol 192 (1-2) ◽  
pp. 109-121 ◽  
Author(s):  
A. Nogami ◽  
T. Suzaki ◽  
Y. Shigenaka ◽  
Y. Nagahama ◽  
Y. Mineyuki
Keyword(s):  
Allium Cepa ◽  
Root Tip ◽  
Allium Cepa L ◽  
Tip Cells ◽  
Root Tip Cells ◽  
Preprophase Bands

scholarly journals Effect of triazophos on mitotic activity and chromosomal behavior in root meristems of Allium cepa L.

2010 ◽  
Vol 6 ◽  
pp. 4-7 ◽  
Author(s):  
Archana Pandey ◽  
Shyam R Sakya
Keyword(s):  
Mitotic Activity ◽  
Allium Cepa ◽  
Root Meristem ◽  
Plant Science ◽  
Root Tip ◽  
Allium Cepa L ◽  
Meristematic Region ◽  
Cellular Abnormalities ◽  
Tip Cells ◽  
Root Tip Cells

Effect of triazophos (an organophosphorous insecticide) on mitotic activity and chromosomal behavior in the meristematic region of root tip cells of Allium cepa L. was assessed. The insecticide showed mitotic depression and positive chromo-toxic effects. Abnormalities, such as stickiness, plasmolysed cells, equatorial plate shifting, polar shifting, irregular chromosome arrangement, precocious arms formation, bridge formation, C-metaphase, fragmentation of chromosomes, unequal cytokinesis, diagonal cytokinesis, delayed cytokinesis and formation of binucleated cells, were recorded in the chemically pretreated root meristem. Key-words: chromosomal and cellular abnormalities; cytotoxic effect; mitotic index; phase indices.DOI: 10.3126/botor.v6i0.2903 Botanica Orientalis - Journal of Plant Science (2009) 6: 4-7

scholarly journals Low dose genotoxicity of 4-bromo-n,n-diethyl-5,5- dimethyl-2,5-dihydro-1,2-oxaphosphol-2-amine 2-oxide in mice bone marrow cells and Allium cepa L. root tip cells

Genetika ◽  
2009 ◽  
Vol 41 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Vanya Kalcheva ◽  
Asya Dragoeva ◽  
Karamfil Kalchev ◽  
Dobromir Enchev
Keyword(s):  
Bone Marrow ◽  
Allium Cepa ◽  
Bone Marrow Cells ◽  
Root Tip ◽  
Low Doses ◽  
Test Systems ◽  
Allium Cepa L ◽  
Tip Cells ◽  
Root Tip Cells ◽  
Marrow Cells

The chemistry of organophosphorus compounds is a subject of increasing interest and different new compounds have been synthesized. There are data that some known organophosphates are mutagens. Oxaphosphole derivatives possess biological activity and might influence proliferating cells. Bioassays are currently used in ecotoxicology to investigate the effects and mechanisms of action of new chemicals. To provide a broad coverage of the mutagenic potential of a chemical, information on different experimental test-systems is required. Genotoxicity assays are usually performed at high doses, but humans are exposed to most environmental chemicals at low doses. The objective of this study was to determine the genotoxicity of low doses (2.82x10-6 ?g/kg and 2.82x10-9 ?g/kg, corresponding to concentrations 10-12M and 10-15M) of 4-bromo-N,N-diethyl- 5,5-dimethyl-2,5-dihydro-1,2-oxaphosphol-2-amine 2-oxide (Br-oxph) in ICR mice bone marrow cells and Allium cepa L. root tip cells. Treatment with Br-oxph for 3 h produced alterations in the mitotic index in Allium cepa cells and induced chromosome aberrations in both test systems. These effects remained 48 h after the treatment. The data from the study showed the existence of cytotoxic and genotoxic effects of Br-oxph at tested doses.

scholarly journals Chromosomal and Nuclear Alterations in Root Tip Cells of Allium Cepa L. Induced by Alprazolam

2013 ◽  
Vol 67 (6) ◽  
pp. 388 ◽  
Author(s):  
Hilada Nefic ◽  
Jasmin Musanovic ◽  
Azra Metovic ◽  
Kemajl Kurteshi
Keyword(s):  
Allium Cepa ◽  
Root Tip ◽  
Allium Cepa L ◽  
Nuclear Alterations ◽  
Tip Cells ◽  
Root Tip Cells
Sign in / Sign up

Export Citation Format

Share Document