Induction of sister chromatid exchanges by heavy metal salts in root meristem cells ofAllium cepa L.

Panda, Kamal K.; Patra, Jita; Panda, Brahma B.

doi:10.1007/bf02890606

Cited by 11 publications

(6 citation statements)

References 19 publications

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“…The cell proliferation was affected as well as toxic effects were observed, expressed by mitotic index and aneugenic effects. Previous studies reported cytogenotoxic effects of trace elements (Al, Cd, Fe, Mn, and Zn) using the Allium test [33,81,82]. Moreover, N-ammonium was also related to cause genotoxicity in Oreochromis niloticus [83].…”

Section: Cytogenotoxic Effects Of Compounds Released Upon Rewettingmentioning

confidence: 87%

Sediment drying-rewetting cycles enhance greenhouse gas emissions, nutrient and trace element release, and promote water cytogenotoxicity

et al. 2020

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Section: Cytogenotoxic Effects Of Compounds Released Upon Rewettingmentioning

confidence: 87%

Sediment drying-rewetting cycles enhance greenhouse gas emissions, nutrient and trace element release, and promote water cytogenotoxicity

et al. 2020

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“…Plant assays and the Allium cepa test, particularly, have some advantages over microbial and mammalian cell tests because they are highly sensitive to many environmental pollutants (Fiskesjö, 1985), including heavy metals (Panda et al, 1996;Palacio et al, 2005), and are also useful for monitoring the potential synergistic tion of cell division (Fiskesjö, 1985;Odeigah et al, 1997;Babatunde and Bakare, 2006;Egito et al, 2007). Changes in MI estimate the altered frequency of cell division and are an indication that cell proliferation is affected (Marcano et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the cytotoxic and genotoxic potential of water from the River Paraíba do Sul, in Brazil, with the Allium cepa L. test

et al. 2009

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This work investigated the cytotoxic and genotoxic potential of water from the River Paraíba do Sul (Brazil) using Allium cepa roots. An anatomo-morphological parameter (root length), mitotic indices, and frequency of micronuclei were analysed. Eight bulbs were chosen at random for treatment for 24 to 120 hours with the River water collected in the years of 2005 and 2006 from sites in the cities of Tremembé and Aparecida (São Paulo state, Brazil). Daily measurements of the length of the roots grown from each bulb were carried out throughout the experiment. Mitotic index (MI) and frequency of micronuclei (MN) were determined for 2000 cells per root, using 3-5 root tips from other bulbs (7-10). Only in the roots treated with samples of the River water collected in 2005 in Tremembé city was there a decrease in the root length growth compared to the respective control. However, a reduction in MI values was verified for both sites analysed for that year. Considering the data involving root length growth and especially MI values, a cytotoxic potential is suggested for the water of the River Paraíba do Sul at Tremembé and Aparecida, in the year of 2005. On the other hand, since in this year the MN frequency was not affected with the river water treatments, genotoxicity is not assumed for the river water sampled at the aforementioned places.

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“…The BrdU incorporation was performed during two cycles of cell division by exposure to a mixture comprised of 100 µM BrdU, 0.1 µM 5-fluorodeoxyuridine (FdUrd) and 5 µM uridine (Urd). The procedure of material fixation, maceration and staining was followed as previously described [13].…”

Section: Cytological Analysismentioning

confidence: 99%

Genotoxicity of barley stripe mosaic virus in infected host plants

et al. 2010

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A comparative study of the effect of barley stripe mosaic virus (BSMV) and gamma irradiation on mitotic divisions in barley (Hordeum vulgare L.) roots was performed by evaluating the mitotic index (MI), micronucleus (MN) frequency and sister chromatid exchanges (SCE). Results indicate that, similarly to gamma irradiation at doses of 100, 150 and 250 Gy, BSMV reduces the mitotic activity, increases the micronucleus frequency and the rate of SCE and promotes the formation of C-metaphases. In root meristematic cells of the three barley cultivars studied (Galactic, Sonor and Unirea), the mitotic index of infected plants was found to be 52.5, 54.48 and 64.17%, respectively, lower than the uninfected control. An increase in frequency of sister chromatid exchanges was observed in all the experimental variants. In treatments involving viral infection alone or in combination with gamma irradiation chromosomes with three and more chromatid exchanges were observed, while their percentage in the control or in treatments with gamma irradiation alone was reduced. The results of the study indicate that in plants derived from irradiated seeds, BSMV produces an effect that is correlated nonlinearly with the radiation dose applied. Cytological analysis of mitotic divisions in barley roots revealed the genotoxicity of BSMV infection.

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Induction of sister chromatid exchanges by heavy metal salts in root meristem cells ofAllium cepa L.

Cited by 11 publications

References 19 publications

Sediment drying-rewetting cycles enhance greenhouse gas emissions, nutrient and trace element release, and promote water cytogenotoxicity

Sediment drying-rewetting cycles enhance greenhouse gas emissions, nutrient and trace element release, and promote water cytogenotoxicity

Evaluation of the cytotoxic and genotoxic potential of water from the River Paraíba do Sul, in Brazil, with the Allium cepa L. test

Genotoxicity of barley stripe mosaic virus in infected host plants

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