• FARZANE AMIRMAHANI

      Articles written in Journal of Genetics

    • Selection and validation of reference genes for normalization of qRT-PCR gene expression in wheat (Triticum durum L.) under drought and salt stresses

      JAMSHIDI GOHARRIZI KIARASH HENRY DAYTON WILDE FARZANE AMIRMAHANI MOHAMMAD MEHDI MOEMENI MARYAM ZABOLI MARYAM NAZARI SAYYED SAEED MOOSAVI MINA JAMALVANDI

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      Eight candidate housekeeping genes were examined as internal controls for normalizing expression analysis of durum wheat (Triticum durum L.) under drought and salinity stress conditions. Quantitative real-time PCR was used to analyse gene expression of multiple stress levels, plant ages (24 and 50 days old), and plant tissues (leaf and root). The algorithms BestKeeper, NormFinder, GeNorm, the delta Ct method and the RefFinder were applied to determine the stability of candidate genes. Under drought stress, the most stable reference genes were glyceraldehyde-3 phosphate, ubiquitin and βtubulin2-, whereas under salinity stress conditions, eukaryotic elongation factor 1-α, glyceraldehyde-3 phosphate and actin were identified as the most stable reference genes. Validation with stress-responsive genes NAC29 and NAC6 demonstrated that the expression level of target genes could be determined reliably with combinations of up to three of the reference genes. This is the first report on reference genes appropriate for quantification of target gene expression in T. durum under drought and salt stresses. Results of this investigation may be applicable to other Triticum species.

    • CG/CA genotypes represent novel markers in the NPHS2 gene region associated with nephrotic syndrome

      LEILA ESMAELI CHAMGORDANI NASIM EBRAHIMI FARZANE AMIRMAHANI FARZANE AMIRMAHANI SADEQ VALLIAN

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      Nephrotic syndrome (NS) is considered as a primary disease of the kidney that represents a heterogeneous group of glomerulardisorders occurring mainly in children. It is generally divided into steroid-sensitive and steroid-resistant forms, depending upon the patient’s response to steroid therapy. Among the genes involved, the NPHS2 gene has been reported as the causative gene in steroid resistant form of nephrotic syndrome. In the present study, heterozygosity rate, allelic frequency and linkage of rs2274625 and rs3829795 markers were investigated in the NPHS2 gene region. To determine the SNP alleles, tetra-primer ARMS PCR was used. After genotyping rs2274625 and rs3829795 polymorphic markers in 120 unrelated individuals and nine trios families, the data were analysed using various computerprograms such as UCSC Genome Browser, dbSNP and SNPper. Based on the statistical analysis of the results, for rs2274625 marker, allele frequency for C and T alleles was 97% and 3%, respectively. For rs3829795 marker allele frequency for G and A alleles was 55% and 45%, respectively. The values of heterozygosity index for the examined markers were 5% for rs2274625 and 45/8% for rs3829795. Consequently,two informative haplotypes, CG/CA, were identified in the NPHS2 gene region through combination of these two markers. Thesehaplotypes can serve as appropriate tools for the identification of heterozygous carriers and linkage analysis of nephrotic syndrome disease in the Iranian families with an affected child.

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