Abstract：
:Random amplified polymorphic DNA (RAPD) test is a feasible method to evaluate the toxicity of environmental pollutants on vegetal organisms. Herein, Arabidopsis thaliana (Arabidopsis) plantlets following Cadmium (Cd) treatment for 26 d were screened for DNA genetic alterations by DNA fingerprinting. Four primers amplified 20-23 mutated RAPD fragments in 0.125-3.0 mg L(-1) Cd-treated Arabidopsis plantlets, respectively. Cloning and sequencing analysis of eight randomly selected mutated fragments revealed 99-100% homology with the genes of VARICOSE-Related, SLEEPY1 F-box, 40S ribosomal protein S3, phosphoglucomutase, and noncoding regions in Arabidopsis genome correspondingly. The results show the ability of RAPD analysis to detect significant genetic alterations in Cd-exposed seedlings. Although the exact functional importance of the other mutated bands is unknown, the presence of mutated loci in Cd-treated seedlings, prior to the onset of significant physiological effects, suggests that these altered loci are the early events in Cd-treated Arabidopsis seedlings and would greatly improve environmental risk assessment.
journal_name
Chemospherejournal_title
Chemosphereauthors
Liu W,Sun L,Zhong M,Zhou Q,Gong Z,Li P,Tai P,Li Xdoi
10.1016/j.chemosphere.2012.05.068subject
Has Abstractpub_date
2012-11-01 00:00:00pages
1048-55issue
9eissn
0045-6535issn
1879-1298pii
S0045-6535(12)00689-3journal_volume
89pub_type
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