Browsing by Author "Erez, M.E."
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Article Determination of Botanical Origin and Mineral Content of Propolis Samples From Balveren (Şırnak) Beekeepers Accommodation Areas(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2022) Fidan, M.; Pinar, S.M.; Erez, M.E.; Inal, B.; Eroğlu, H.Researches on bee products have become popular in recent years. In fact, the content and component of bee products varies depending on many ecological and floristic factors and its nutritional and therapeutic properties are directly related to its content. Balveren (Şırnak province) beekeepers place their hives in locations with different geographical structure, floristic and topographic characteristics. This variability not only affects the quality of honey but also changes the properties of propolis. Studies on propolis, known as bee glue, have gained importance in recent years. As with other bee products, the propolis content also depends on the floristic characteristics of the region. In this study, propolis samples were collected from the regions where Balveren beekeepers stayed and their botanical origins, wax ratios, phenolic content, and mineral substance contents were analyzed. In the microscopic analysis, pollen grains belonging to 14 different families used by bees were determined. It was determined that the total phenolic and mineral contents of propolis vary completely depending on the location. With this study, the propolis properties of the hives in the region were tried to be revealed and it was aimed that this study would help the region's propolis to be used for technological and therapeutic purposes. © 2022, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.Article Hplc Determination of Sugar Contents Based on Harvest Season in Almonds(Chemical Publishing Co., 2007) Balta, M.F.; Yörük, I.H.; Dogan, A.; Erez, M.E.; Battal, P.This study presents in comparison with harvest seasons sugar contents in 18 promising almond selections [Prunus dulcis (Mill.) D.A. Webb.] from Balikesir (western Anatolia, Turkey). Their majority had kernel weight over one gram since large kernel is a desired fruit characteristics for almond breeding efforts. Nuts of almond genotypes were collected at two seasons based on their harvest times. The harvest seasons were late August for 8 promising genotypes and early September for other 8 genotypes. Sugar contents were detected by HPLC Selections harvested in late August and early September averagely contained 2.19-2.31 g/100 g sucrose, 0.68-0.92 g/100 g maltose, 2.09-1.82 g/100 g glucose and 4.08-3.41 g/100 g fructose. Sugar contents of selections did not differ by harvest season statistically. Whereas, significant differences were found among selections for each harvest season. In addition, the mean sugar was fructose in 12 genotypes, sucrose in 4 genotypes and glucose in one genotype.Article Physiological and Gene-Expression Variations in Watermelon (Citrullus Lanatus L.) Cultivars Exposed To Drought Stress(Polish Botanical Society, 2020) Erez, M.E.; Inal, B.; Karipçin, M.Z.; Altıntaş, S.Drought conditions may have direct or indirect effects on plant physiology, biochemistry, and molecular characteristics. The purpose of this study was to investigate the effects of drought stress on the physiological, biochemical, and molecular responses of three different watermelon cultivars with varying levels of drought tolerance (24: drought resistant, CS: moderately tolerant, and 98: drought sensitive). The cultivars exhibited different responses to cope with water stress according to their tolerance level. Drought induced significant reductions in chlorophyll a, total chlorophyll and carotenoid content and glutation reductase and ascorbate peroxidase activity in the sensitive cultivar unlike in the moderately tolerant and drought resistant cultivars. Additionally, the expression levels of NAC1, NAC2, ORE1, WRKY24, SAG12, SAG13, KCS2, CER1, DREB2A, LTP3, SWEET15, and PYL9 genes were measured using qRT-PCR. The expression ratios of the genes significantly varied depending on the gene location and on the tolerance of the cultivars. Results showed that the physiology and biochemical and molecular pathways of tolerant cultivars change to adapt to drought conditions. Therefore, the drought-resistant cultivar copes with drought stress by increasing proline content and antioxidant enzyme activities, as well as by increasing the expression of specific genes. © The Author(s) 2020.