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Effects of genotoxicity and its consequences at the population level in sexual and asexual Artemia assessed by analysis of inter-simple sequence repeats (ISSR)

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Title Effects of genotoxicity and its consequences at the population level in
sexual and asexual Artemia assessed by analysis of inter-simple
sequence repeats (ISSR)
Not Available
 
Creator Sukumaran,Sandhya
Grant,Alastair
 
Subject Inter-simple sequence repeats
Artemia
Ethylmethane sulfonate
Genotoxicity
Ecotoxicology
 
Description Not Available
There is considerable evidence that genetic damage in organisms occurs in the environment as a result of
exposure to genotoxins and ionising radiation, but we have limited understanding of the extent to which
this results in adverse consequences at a population level. We used inter-simple sequence repeat (ISSR)
markers to quantify genotoxic effects of the mutagen ethylmethane sulfonate (EMS) on a sexual (Artemia
franciscana) and an asexual (Artemia parthenogenetica) species of brine shrimp. The method provides
information similar to that obtained with assessment of RAPD (random amplification of polymorphic
DNA) but is more robust. Genetic damage was transmitted to the F1 generation in both Artemia species,
but the sexual species showed a greater degree of recovery, as shown by higher values of genomic template
stability. There was a strong correlation between DNA damage and effects on individual fitness
parameters: size, survival, reproduction and population growth. These effects persisted into the F2 generation
in A. parthenogenetica, but in the sexual A. franciscana only effects on fecundity continued beyond
the exposed generation, even though there were substantial alterations in ISSR patterns in the F1 generation.
Genetic biomarkers can thus be indicative of effects at the population level, but sexually reproducing
species have a considerable assimilative capacity for the effects of genotoxins.
Not Available
 
Date 2021-09-16T08:12:49Z
2021-09-16T08:12:49Z
2013
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63139
 
Language English
 
Relation Not Available
 
Publisher Elsevier