Browsing by Author "Nohutcu, Lutfi"

Now showing 1 - 5 of 5

Determination of Morphological and Quality Characteristics of Naturally Growing Thymus Kotschyanus Boiss. & Hohen. Var. Kotschyanus Populations Around of Van/Türkiye
(Mdpi, 2025) Nohutcu, Lutfi; Tuncturk, Murat; Tuncturk, Rueveyde; Selem, Ezelhan; Eroglu, Huseyin
In this study, morphological and quality characteristics (nutritional value, EO ratio and content, TPC, TFC, and TAA) of 12 different naturally growing populations (T1 to T12) of Thymus kotschyanus var. kotschyanus were investigated. In the case of macro and micro nutrients, all the populations have a rich ingredient, and for heavy metal content, all population results are within limits. The percentage of essential oils in the population varied between 0.43% to 4.66% (v/w). Thymol was the most abundant compound in the whole population and the percentage of thymol ranged from 4.07% to 81.15%. In the study, eight populations had more than 50% thymol content and the maximum percentage was recorded from the T1 population (81.15%). The total phenolic compound ranged from 152.81 to 195.23 mg GAE/g of dry extract and total flavonoid content ranged from 145.24 to 382.74 mg QE/100 g. Total antioxidant activity varies between 78.43 and 228.55 mu mol TE/g and the highest value was obtained from population T7. PCA analysis was carried out to determine the morphological and quality parameters of the populations. Four populations were superior to others for morphological analysis and two populations were superior to others for quality analysis. According to the result of the study, the T10 population has higher yield and quality compared to other populations.
Effects of Lead Doses on the Mineral Content and Antioxidant Capacity of Fenugreek (Trigonella Foenum-Graecum L.)
(Polish Society Magnesium Research, 2022) Tuncturk, Murat; Tuncturk, Ruveyde; Oral, Erol; Nohutcu, Lutfi
Heavy metals are a very important abiotic stress factors that can induce different response mechanisms in plants. These response mechanisms include modifying membrane compositions, generating small molecules and free radicals, and altering antioxidant enzyme activities. In this study, we aimed to determine the effect of lead (Pb), an important heavy metal, on some growth parameters, enzymes, and the content of macro- and micro-nutrients. This study was launched to determine the effects of lead (0, 25, 50, 75, 100 mg L-1) on fenugreek's (Trigonella foenum-graecum L.) growth parameters and biochemical responses in a fully controlled aeroponic climate chamber. Growth, biochemical enzyme activities and the content of macro- and micro-nutrients of fenugreek plans changed under heavy metal stress. In the study, a decrease occurred in parameters such as the plant height (cm), root length (cm), root and stem fresh weight (g), leaf weight (g) and leaf number (number). There were increases in malondialdehyde (MDA) and ascorbate peroxidase (APX) enzymes. There was a decrease in the content of minerals (Ca, K, Mg, Na, Cu, Ni, Fe, Zn, Mn, Cr, Ni, Se and Cd) in leaves, stem and root parts of fenugreek plants. In this study, lead tolerance conditions, the plant content of macro- and micro-nutrients and enzyme activity values of this plant were determined.
Effects of Rhizobacteria and Algal Species on Physiological and Biochemical Parameters in Calendula Officinalis L. Under Different Irrigation Regimes
(Polish Society Magnesium Research, 2022) Selem, Ezelhan; Tuncturk, Ruveyde; Nohutcu, Lutfi; Tuncturk, Murat
Drought is one of the main limiting factors affecting the growth and productivity of plants. Drought stress affects plant growth in different ways through a series of anatomical, morphological, physiological and biochemical changes. Therefore, it is important to develop alternative methods to protect plants against drought stress. Turkey has one the most unique cultivated areas of different medicinal and aromatic plants including Calendula officinalis. Despite its considerable importance and use as a medicinal plant, its commercial production is very limited. In this study, the effects of different rhizobacteria and algal species treatments (B-0 - control, B-1 - Azospirillum lipoferum, B-2 - Bacillus megaterium, B-3 - Chlorella saccharophila) on several physiological and biochemical parameters in C. officinalis were studied under irrigation regimes - normal irrigation (K-1), 50% irrigation (K-2) and 25% irrigation (K-3). The results showed that the application of different rhizobacterial and algal species had positive effects by reducing the limited irrigation stress. Also, the range of different physiological and biochemical parameters values, including leaf relative water content (RWC), ion leakage in leaf tissues (ILLT), membrane endurance index (MEI), chlorophyll content, nitrogen balance index, MDA, total antioxidant activity, total phenolic content and total amount of flavonoids were determined as 61.8-77.2%, 29.2-42.8%, 57.2-68.9%, 26.8-38.2 mu g cm(-2), 110.6-158.0 mg g(-1), 0.276-573.0 nmol g(-1), 19.92-55.92 Mmol TE g(-1), 27.37-68.75 mg GAE g(-1) and 9.49-17.88 mg QE 100 g(-1), respectively. The results revealed that C. officinalis could be commercially cultivated as a drought-resistant plant species in arid and semi-arid regions of Turkey.
The Influence of Wool Pellet Application on Alleviating Salt-Induced Stress in Soybean (Glycine Max L.)
(Mdpi, 2025) Nohutcu, Lutfi
Soil salinity is a pervasive challenge in agricultural regions, significantly impacting plant growth and productivity. Addressing the adverse implications of soil salinization and capitalizing on organic waste resources has the potential to yield substantial advancements in the agricultural sector. This study examined the influence of varying levels of wool pellets (0, 1%, 2%, and 4%) and salt (0, 25, 50, and 100 mM) on the physiological and biochemical properties of soybean (Glycine max L.). The findings revealed that compared to the control group, at a 4% application rate, plant length decreased by 20%, while stem dry weight, root length and weight showed no significant differences up to a 2% application. Compared to the control treatment, the 4% application rate resulted in an increase of 6% in leaf temperature, 55% in NBI, 12% in chlorophyll content, and 10% in MDA activity. Conversely, the TAA, TPC, and carotenoid content decreased by 55%, 51%, and 81%, respectively. Salt applications led to reductions in most studied morphological parameters, except for root properties. Compared to the control, plant length, stem fresh weight, and stem dry weight decreased by 14%, 22%, and 14%, respectively, while root length, root fresh weight, and root dry weight increased by 18%, 33%, and 50%, respectively.
Safflower (Carthamus Tinctorius L.) Response To Cadmium Stress: Morpho-Physiological Traits and Mineral Concentrations
(Mdpi, 2023) Tuncturk, Murat; Danesh, Younes Rezaee; Tuncturk, Ruveyde; Oral, Erol; Najafi, Solmaz; Nohutcu, Lutfi; Teixeira Filho, Marcelo Carvalho Minhoto
Cadmium is a widely distributed heavy metal in agricultural soils that affects plant growth and productivity. In this context, the current study investigated the effects of different cadmium (Cd) doses (0, 25, 50, 75, and 100 mg L-1 of CdSO4) on the growth and physiological attributes of safflower (Carthamus tinctorius L.) including plant height (cm), root length (cm), fresh weight (g) of root, stem, and leaves, leaf number, macro and micro-nutrients, Se, and heavy metal (Cd, Cr, and Pb) content. The experiment was carried out in a completely randomized design (CRD) with four replicates. The results showed that Cd stress significantly negatively affected all growth indices, macro- and micro-nutrients, and heavy metal content. In addition, it increased the MDA and APX activities. The highest amounts of Fe, Mn, Ni, Pb, Zn, K, Na, Cd, Cr, and Cu were determined in plant roots, while the highest values of Ca and Mg were detected in plant stem tissues. High Cd doses decreased the content of Ca, K, Mg, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn in safflower plant tissues by 45.47%, 39.33%, 79.28%, 68.21%, 37.06%, 66.67%, 45.62%, 50.38%, 54.37%, 33.33% and 65.87%, respectively, as compared to the control treatments.