Lamiaceae Taxa Research Articles

Evaluation of Seedling Development and Physical Characteristics, Viability and Germination of Seeds in Some Lamiaceae Taxa

The Flora of Türkiye is very rich in the members of the Lamiaceae family. This study, it was aimed to investigate some physical characteristics, viability, germination performance of their seeds, and initial seedling development of 16 taxa belonging to the Lamiaceae family collected from the natural area. According to the results, the highest and lowest viability value was recorded in S. aethiopis (82.86%) and in S.yosgadensis (10.71%), respectively. The root length values of the taxa changed between 25.57mm (T.sipyleus)-66.82mm (S.aethiopis) at the end of the 21st day. The shoot lengths of the seedlings were determined to vary between 3.12mm (T.sipyleus)-22.41 mm (P.armeniaca). The seed width and length values of taxa varied between 0.911-2.788mm and 0.999-5.055mm, respectively. Values varying between 0.432-0.865 were calculated according to the geometric properties determined by proportioning the width and length dimensions of the seeds. The obtained results will be useful for studies on the cultivation of these taxa.

Comparing the Fatty Acid Composition and Neuroprotective Effects of Some Lamiaceae Taxa from Turkey

Comparing the Fatty Acid Composition and Neuroprotective Effects of Some Lamiaceae Taxa from Turkey

Essential Oil and Fatty Acid Composition of Leaves of Some Lamiaceae Taxa FromTurkey

Essential oil can be extracted from various plants. In this present study, the essential oil and leaf fatty acid compositions of some plants taxa: Saturej amacrantha C.A.Mey., Nepeta transcaucasica Grossh., Nepeta betonicifolia C.A.Mey., Scutellaria orientalis L. subsp. orientalis and Salvia euphratica Montbret & Aucher ex Benth. var. lejocalycina were analyzed by GC-MS. Carvacrol (20.2 %) and thymol (11.3 %) were detected as the main compounds of S. macrantha; caryophyllene oxide (18.5 %), camphor (14.9 %) and β- pinene (14.7 %) were detected as the major constituents of S. euphratica; nepetalactone (18.5 %) and 1,8- cineole (14.4 %) were detected as the main compounds of N. transcaucasica; 1,8-cineole (13.7 %) and nepetalactone (12.2 %) were found to be the main compounds of N. betonicifolia; β-caryophyllene (14.3 %) and 1,8-cineole (10.3 %) were found to be the main compounds of S. orientalis subsp. orientalis. The fatty acid composition of the studied samples were found to be palmitic (21.76-60.00 %), steraic (17.21-38.53 %) and linoleic acid (5.66-27.35 %).

Evaluation of total antioxidant status, total oxidant status and oxidative stress index in some economically important plants from Turkey

This study aims to develop antioxidant properties of thirty four economically important plants of Asteraceae and Lamiaceae families, from Turkey. Analyses were done with reliable measurement research kits. Total antioxidant status, total oxidant status were determined with a novel method using available enzyme-linked immuno assay kit (TOS Cat. No: RL0024, TAS Cat. No: RL0017).Total antioxidant (TAS) level of studied Asteraceae and Lamiaceae taxa were detected as 71.61±37.05 mmol/L and 36.97±9.6 mmol/L, respectively. In addition, TAS level of Asteraceae taxa was found to be higher (p<0.38) than Lamiaceae taxa. When compared total oxidant (TOS) level of Asteraceae (3.02±0.66) and Lamiaceae taxa (5.26±1.06), no significant (p=0.08) differences were observed. In the similar way OSI levels in the Asteraceae (12.52±3.63 AU) Lamiaceae families (30.8±8.4 AU) were found to be no significant difference (p=0.05). The present study concluded that antioxidative feature of studied plant taxa is remarkable. So studied plant taxa are emerges a natural source of antioxidants and could be a good experimental system for further researches.

Leaf fatty acid composition of some Lamiaceae taxa from Turkey

Fatty acids composition leaves of Satureja hortensis L., Satureja boissieri Hausskn ex Boiss., Thymus kotschyanus Boiss.& Hohen. var. glabrescens Boiss., Thymus kotschyanus Boiss. & Hohen. var. kotschyanus, Thymus hausknechtii Velen., Thymus pubescens Boiss. & Kotschy ex Celak var. pubescens, Thymus fallax Fisch & Mey, Origanum vulgare L. subsp. gracile and Origanum acutidens L., were analyzed by gas chromatography. The fatty acid composition of plants used to this study showed different saturated and unsaturated fatty acid concentrations. The main fatty acids found were Palmitic acid methyl ester (13.49-27.71%), Linoleic acid methyl ester (10.85-19.47%), and Linolenic acid methyl ester (40.68-56.53%); while other fatty acids were found in minor proportions. As a result, all taxa had the highest total unsaturated fatty acid amounts (39.05-73.19%) and the lowest total saturated fatty acid amounts (19.43-51.12%). The highest unsaturated fatty acid determined to Satureja hortensis (73.19%), the lowest to Thymus hausknechtii (39.05%). In this study, palmitic acid methyl ester was found the major saturated fatty acids in all studied taxa.

Essential Oil Composition of Clinopodium vulgare L. subsp. arundanum (Boiss.) Nyman from Bingöl (Turkey)

Many of the medicinal and aromatic plants from Lamiaceae taxa are uses presumed to be connected to the terpenic constituents of the essential oils. In this study aerial parts essential oil of Clinopodium vulgare L. subsp. arundanum was analyzed by HS-SPME. As a result, thirty seven components were identified. b -caryopyllene (16.1%), g -terpinene (15.4%), germacrene D (10.3%), p -cymene (8.6%) and thymol (6.4%) were detected the major constituents. With this study, chemotypes of studied sample were detected b -caryopyllene, g -terpinene, germacrene D, p -cymene and thymol. In addition, studied plant sample was found to be rich in respect to essential oils and the results discussed natural product, renewable resources and chemotaxonomy

Phylogenetic relationships, character evolution and biogeographic diversification of Pogostemon s.l. (Lamiaceae)

Pogostemon (Lamiaceae; Lamioideae) sensu lato is a large genus consisting of about 80 species with a disjunct African/Asian distribution. The infrageneric taxonomy of the genus has historically been troublesome due to morphological variability and putative convergent evolution within the genus. Notably, some species of Pogostemon are obligately aquatic, perhaps the only Lamiaceae taxa which exhibit this trait. Phylogenetic analyses using the nuclear ribosomal internal transcribed spacer (ITS) and five plastid regions (matK, rbcL, rps16, trnH-psbA, trnL-F), confirmed the monophyly of Pogostemon and its sister relationship with the genus Anisomeles. Pogostemon was resolved into two major clades, and none of the three morphologically defined subgenera of Pogostemon were supported as monophyletic. Inflorescence type (spikes with more than two lateral branches vs. a single terminal spike, or rarely with two lateral branches) is phylogenetically informative and consistent with the two main clades we recovered. Accordingly, a new infrageneric classification of Pogostemon consisting of two subgenera is proposed. Molecular dating and biogeographic diversification analyses suggest that Pogostemon split from its sister genus in southern and southeast Asia in the early Miocene. The early strengthening of the Asia monsoon system that was triggered by the uplifting of the Qinghai–Tibetan Plateau may have played an important role in the subsequent diversification of the genus. In addition, our results suggest that transoceanic long-distance dispersal of Pogostemon from Asia to Africa occurred at least twice, once in the late Miocene and again during the late-Miocene/early-Pliocene.