جستجوی مقالات مرتبط با کلیدواژه « marrubium » در نشریات گروه « زیست شناسی »

Marrubium genus belongs to the family Lamiaceae which is one of the precious genara native to Iran. Phytochemical studies upon Marrubium spp. are so limited so we decided to study four species of genus Marrubium native to Iran. The aerial parts of four Marrubium spp. (M. crassidens, M. persicum, M. propinquum, and M. parviflorum) were collected during their flowering stages from Varzeghan and Marand provinces from Azarbaijan, Iran in 1395. Dried plant materials were solvent extracted separately with petroleum ether, chloroform and methanol via maceration method. Afterwards, the antioxidant activities of the extracts were evaluated through scavenging the free DPPH radicals. Besides, the total phenolic and flavonoid contents of the extracts were verified based on colorimetric relative techniques. The antioxidant evaluation established the lowest RC50 of 11.1μg/mL for the 40% Sep-Pak fraction of the M. crassidens methanol extract. Moreover, petroleum ether extracts revealed no antioxidant activity. The most total phenolics and flavonoids content of the extracts were for M. crassidens methanol extract with 512.6 mg gallic acid equivalent and 212.7 mg quercetin equivalent both in 100 g dried plant material. In the study, presence of phenollics and flavonoids in different levels alongside prominent antioxidant activities were detected for the four Marrubium spp. native to East Azerbaijan. Overall, M. crassidens possessed higher phenolic and flavonoid contents resulting in superior antioxidant activity compared to other three species.

In the current study, leaf anatomical structure and tissue cellular variation was evaluated in three populations of M. anisodon in Iran. Two individuals were selected from each population. Leaves from middle part of the stems were fixed in F.A.A fixative and thin hand–cut sections were prepared of them.  Then leaf samples were double stained and studied using a light microscope. Data were analysed using SPSS and MVSP softwares. In all studied populations, leaves trans sections were dorsi–ventral. But, qualitative and quantitative traits of leaf differed among the populations. The ANOVA test did not show significant variations among most of the quantitative traits. Populations clustered separately in the UPGMA tree and also PCA and PCO plots. The population’s arrangement pattern did not fit with geographical distances between populations. Similarity in the ecological conditions of habitats lead to anatomical structural likeness, and this case dose not related with geographical distance. Therefore, wherever the ecological conditions are similar, the likeness of leaf anatomical structure is very possible.