Publications

  • [Show abstract] [Hide abstract]
    ABSTRACT: In order to enhance postharvest antioxidant potential of cornelian cherry fruits, the effects of treatment with 0 (control), 1 and 2 mM salicylic acid (SA) on total phenols (TP), flavonoids (TF), anthocyanins (TA), ascorbic acid (AA) contents, DPPH scavenging activity (TAA) and phenylalanine ammonia-lyase (PAL) enzyme activity were investigated in fruits stored at 4 °C for 21 days. The DPPH scavenging activity of the cornelian cherry fruits was significantly increased by SA treatment. In addition, fruits treated with SA exhibited significantly higher total phenols, flavonoids, anthocyanins and ascorbic acid contents, and higher PAL enzyme activity. These results suggested that SA treatment might be a powerful strategy to enhance antioxidant potential of cornelian cherry fruits. In addition, these results suggested that enhanced antioxidant potential of cornelian cherry fruits treated with SA might be due to the stimulation of PAL enzyme activity and thus triggering the phenylpropanoid–flavonoids pathways.
    Scientia Horticulturae 05/2013; 154:31-36. DOI:10.1016/j.scienta.2013.01.025 · 1.50 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: In order to enhance postharvest antioxidant capacity of cornelian cherry fruits, the effects of treatment with 0 (control), 40, 60 and 80 mM calcium chloride (CaCl2) on total phenols (TP), flavonoids (TF), anthocyanins (TA), ascorbic acid (AA) contents, DPPH scavenging activity and phenylalanine ammonialyase (PAL) enzyme activity were investigated in fruits stored at 4 degrees C for 21 days. The CaCl2 treatments were effective in maintaining higher total phenols, flavonoids, anthocyanins, ascorbic acid contents, as well as DPPH scavenging activity. Also, PAL enzyme activity of the cornelian cherry fruits was significantly increased by CaCl2 treatments. These results suggest that enhanced antioxidant capacity of cornelian cherry fruits might be due to the stimulation of PAL enzyme activity and thus triggering the phenylpropanoid-flavonoids pathways.
    Scientia Horticulturae 01/2013; 161:160–164. DOI:10.1016/j.scienta.2013.07.006 · 1.50 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Genetic improvement of plants need a high genetic diversity and molecular markers offer a powerful tool for its assessment. Poa pratensis has extensive divergence in natural old turfs and pastures in temperate zones of Iran, being useful for breeding programs. In this research, RAPD markers were used to study the genetic diversity of 19 turfgrass genotypes (including 16 genotypes of Poa pratensis along with one genotype from each of Lolium perenne, Cynodon dactylon and Festuca arundinacea species). After screening 100 random 10-mer RAPD primers, 17 primers were selected based on the clarity of their amplified fragments in PCR and the high reproducibility for scoring. From the 284 produced bands, 281 were polymorphic. Cluster analysis of RAPD data was performed using the UPGMA method based on Jaccard’s similarity coefficients. Dendrogram at a similarity of 0.24 gave 5 main clusters. The correlation coefficient between the data matrix and the cophenetic matrix of cluster data was high (r = 0.99), indicating that the clustering dendrogram being highly fitted to similarity matrix. A relatively high genetic similarity was observed between some commercial cultivars and Iranian local genotypes. In addition, this research showed the high genetic diversity among studied genotypes as well as the high efficiency of RAPD markers for evaluation of genetic diversity among turfgrasses.
    Horticulture, Environment and Biotechnology 08/2012; 53(4). DOI:10.1007/s13580-012-0120-5 · 0.49 Impact Factor

12 Following View all

41 Followers View all