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Showing 2 results for Afkar
Soheila Afkar, Ghasem Karimzadeh, Mokhtar Jalali Javaran,
Volume 2, Issue 1 (5-2015)
Abstract
Peppermint (Mentha piperita L., Lamiaceae) is one of the most important medicinal and aromatic plants. Menthol is the major monoterpene constituent of peppermint’s essential oil, which is used for pharmaceuticals, cosmetics and food industries. This work was aimed to study the expression pattern of important genes (Pr, Mfs, Ls) in menthol biosynthesis pathway in different plant’s organs (leaf, flower and stem) at the beginning of flowering stage. The peppermint plants were supplied from Iranian Institute of Medicinal Plants and were transferred into a greenhouse in pots. Analysis of variance showed that there is a significant difference between leaf, flower and stem, with respect to mRNA transcript level. The results of this study indicated that the level of gene expression of Pr, Mfs and Ls were altered in the different organs. There are direct relationship between the content of menthone and menthofuran and level of gene expressions of Pr and Mfs genes in flower and leaf respectively. It can be concluded that probably the expression of Mfs and Pr genes in these organs may be regulated at transcriptional level.
Soheila Afkar, Faranak Hadi, Ali Ashraf Jafari,
Volume 8, Issue 2 (3-2022)
Abstract
Festuca is one of the largest genera of the grass family, which has more than 600 species with different ploidy levels. The aim of this study was to estimate the genetic diversity within 22 populations of three species of Festuca (Festuca arundinacea, F.rubra and F.ovina) using a seed storage protein electrophoresis pattern. These species showed a significant variation in the number of protein bands from 5-13. The highest number of bands was found in G17 (F.rubra) and the lowest number of protein bands was in G5 (F.ovina). Band number 14 was only observed in G3. It is suggested that this band can be considered as a specific band for the identification of this genotype. According to the results of AMOVA analysis, there is a high level of genetic diversity within the species rather than between species that can be due to the out-crossing nature of this genus. According to observed differences for variation parameters among the three studied species, it is concluded that they have dissimilar genetic structures. The results of cluster analysis based on seed storage protein profiles in evaluated genotypes using Euclidean distance matrix and UPGMA method showed four groups. The lowest similarity coefficient was between G14 and G15 (F.arundinacea) with G6 (F.ovina). Hence, it is suggested that they evolved from a different evolutionary process and it is suggested to use them as the parents of new synthetic varieties. The observed diversity in the seed protein pattern in the three species of Festuca, can be explained by allogamy-induced-heterozygosity, species difference or population collection from various regions.
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