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Dandelion root

Tuba Esatbeyoglu, Betina Obermair, Tabea Dorn, Karsten Siems, Gerald Rimbach, Marc Birringer
Taraxacum officinale, the common dandelion, is a plant of the Asteraceae family, which is used as a food and medical herb. Various secondary plant metabolites such as sesquiterpene lactones, triterpenoids, flavonoids, phenolic acids, coumarins, and steroids have been described to be present in T. officinale. Dandelion may exhibit various health benefits, including antioxidant, anti-inflammatory, and anticarcinogenic properties. We analyzed the leaves and roots of the common dandelion (T. officinale) using high-performance liquid chromatography/mass spectrometry to determine its sesquiterpene lactone composition...
January 2017: Journal of Medicinal Food
Anna Stolze, Alan Wanke, Nicole van Deenen, Roland Geyer, Dirk Prüfer, Christian Schulze Gronover
Natural rubber (NR) is an important raw material for a large number of industrial products. The primary source of NR is the rubber tree Hevea brasiliensis, but increased worldwide demand means that alternative sustainable sources are urgently required. The Russian dandelion (Taraxacum koksaghyz Rodin) is such an alternative because large amounts of NR are produced in its root system. However, rubber biosynthesis must be improved in order to develop T. koksaghyz into a commercially feasible crop. In addition to NR, T...
November 25, 2016: Plant Biotechnology Journal
Jozef Kováčik, Matej Dudáš, Josef Hedbavny, Pavol Mártonfi
Accumulation of selected heavy metals (Cd, Pb, Ni, Cr, Fe, and Zn) and phenolic metabolites (total soluble phenols, cichoric and caftaric acid) in dandelion organs (leaves, roots, inflorescences/anthodia) collected from six localities within the industrial town Košice (eastern Slovakia) were studied. Localities from the vicinity of a steel factory (Cd, Fe) and heavy traffic (Pb, Ni, Cr, Zn) contained the highest amount of individual metals in the soil but a significant correlation between soil and organ metal content was found only for Cr in the leaves (r(2) = 0...
November 2016: Environmental Pollution
Pamela Ovadje, Saleem Ammar, Jose-Antonio Guerrero, John Thor Arnason, Siyaram Pandey
Dandelion extracts have been studied extensively in recent years for its anti-depressant and anti-inflammatory activity. Recent work from our lab, with in-vitro systems, shows the anti-cancer potential of an aqueous dandelion root extract (DRE) in several cancer cell models, with no toxicity to non-cancer cells. In this study, we examined the cancer cell-killing effectiveness of an aqueous DRE in colon cancer cell models. Aqueous DRE induced programmed cell death (PCD) selectively in > 95% of colon cancer cells, irrespective of their p53 status, by 48 hours of treatment...
August 22, 2016: Oncotarget
(no author information available yet)
Last weekend I went to the garden centre and bought myself a fancy tool for pulling up dandelions and thistles without breaking their roots.
May 25, 2011: Nursing Standard
Junwei Zhao, Lifeng Guo, Zhilei Li, Chenyu Piao, Yao Li, Jiansong Li, Chongxi Liu, Xiangjing Wang, Wensheng Xiang
Two novel actinobacteria, designated strains NEAU-Jh1-4T and NEAU-Wp2-0T, were isolated from muddy soil collected from a riverbank in Jiaohe and a dandelion root collected from Harbin, respectively. A polyphasic study was carried out to establish the taxonomic positions of these two strains. The phylogenetic analysis based on the 16S rRNA gene sequences of strains NEAU-Jh1-4T and NEAU-Wp2-0T indicated that strain NEAU-Jh1-4T clustered with Streptosporangium nanhuense NEAU-NH11T (99.32 % 16S rRNA gene sequence similarity), Streptosporangium purpuratum CY-15110T (98...
June 2016: International Journal of Systematic and Evolutionary Microbiology
Kiran Sharma, Rasheeduz Zafar
CONTEXT: Taraxacum officinale Weber (TO) commonly known as "dandelion", is a tropical Asian medicinal plant which contains taraxasterol (TX) and taraxerol (TA) in its roots, which are reported to be commercially important anticancer compounds. OBJECTIVE: The main objective of the present study was to evaluate the increase in yield of TX and TA through elicitation by addition of abiotic elictors like methyl jasmonate (MJ) and β-cyclodextrin (CD), to the root callus suspension cultures of TO...
June 2016: Plant Physiology and Biochemistry: PPB
Meret Huber, Janina Epping, Christian Schulze Gronover, Julia Fricke, Zohra Aziz, Théo Brillatz, Michael Swyers, Tobias G Köllner, Heiko Vogel, Almuth Hammerbacher, Daniella Triebwasser-Freese, Christelle A M Robert, Koen Verhoeven, Veronica Preite, Jonathan Gershenzon, Matthias Erb
Plants produce large amounts of secondary metabolites in their shoots and roots and store them in specialized secretory structures. Although secondary metabolites and their secretory structures are commonly assumed to have a defensive function, evidence that they benefit plant fitness under herbivore attack is scarce, especially below ground. Here, we tested whether latex secondary metabolites produced by the common dandelion (Taraxacum officinale agg.) decrease the performance of its major native insect root herbivore, the larvae of the common cockchafer (Melolontha melolontha), and benefit plant vegetative and reproductive fitness under M...
January 2016: PLoS Biology
Yafan Yang, Shuangshuang Li
Ultraviolet (UV) irradiation causes damage in skin by generating excessive reactive oxygen species (ROS) and induction of matrix metalloproteinases (MMPs), leading to skin photoageing. Dandelion extracts have long been used for traditional Chinese medicine and native American medicine to treat cancers, hepatitis, and digestive diseases; however, less is known on the effects of dandelion extracts in skin photoageing. Here we found that dandelion leaf and flower extracts significantly protect UVB irradiation-inhibited cell viability when added before UVB irradiation or promptly after irradiation...
2015: Oxidative Medicine and Cellular Longevity
Ján Čurlík, Martin Kolesár, Ondrej Ďurža, Edgar Hiller
Contents of potentially toxic elements Fe, Mn, Cr, Ni, Co, V, Cu, and Mo were determined in common dandelion (Taraxacum officinale) and agrimony (Agrimonia eupatoria) to show their usefulness as bioindicators of geogenic soil pollution. Both plants were collected on geochemically anomalous soils developed on flysch sedimentary rocks (Paleogene) of Eastern Slovakia, which also are composed of weathered detritus of some ultramafic rocks. Generally, contents of the investigated association of potentially toxic elements are highly increased in these "serpentine"-like soils...
April 2016: Archives of Environmental Contamination and Toxicology
Hossein Hammami, Mehdi Parsa, Mohammad Hassan Rashed Mohassel, Salman Rahimi, Sajad Mijani
An alternative method to other technologies to clean up the soil, air and water pollution by heavy metals is phytoremediation. Therefore, a pot culture experiment was conducted at the College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran, in 2014 to determine the potential absorption of cadmium by Portulaca oleracea (Common purslane), Solanum nigrum (Black nightshade), Abutilon theophrasti (Velvetleaf) and Taraxacum officinale (Dandelion). The type of experiment was completely randomized design with factorial arrangement and four replications...
2016: International Journal of Phytoremediation
Elisabeth J Eilers, Gerhard Pauls, Matthias C Rillig, Bill S Hansson, Monika Hilker, Andreas Reinecke
Most studies on rhizosphere chemicals are carried out in substrate-free set-ups or in artificial substrates using sampling methods that require an air flow and may thus cause disturbance to the rhizosphere. Our study aimed to develop a simplified and inexpensive system that allows analysis of rhizosphere chemicals at experimentally less disturbed conditions. We designed a mesocosm in which volatile rhizosphere chemicals were sampled passively (by diffusion) without air- and water flow on polydimethylsiloxane-(PDMS) tubes...
March 2015: Journal of Chemical Ecology
Meret Huber, Daniella Triebwasser-Freese, Michael Reichelt, Sven Heiling, Christian Paetz, Jima N Chandran, Stefan Bartram, Bernd Schneider, Jonathan Gershenzon, Matthias Erb
The secondary metabolites in the roots, leaves and flowers of the common dandelion (Taraxacum officinale agg.) have been studied in detail. However, little is known about the specific constituents of the plant's highly specialized laticifer cells. Using a combination of liquid and gas chromatography, mass spectrometry and nuclear magnetic resonance spectrometry, we identified and quantified the major secondary metabolites in the latex of different organs across different growth stages in three genotypes, and tested the activity of the metabolites against the generalist root herbivore Diabrotica balteata...
July 2015: Phytochemistry
O Kenny, N P Brunton, D Walsh, C M Hewage, P McLoughlin, T J Smyth
Plant extracts have traditionally been used as sources of natural antimicrobial compounds, although in many cases, the compounds responsible for their antimicrobial efficacy have not been identified. In this study, crude and dialysed extracts from dandelion root (Taraxacum officinale) were evaluated for their antimicrobial properties against Gram positive and Gram negative bacterial strains. The methanol hydrophobic crude extract (DRE3) demonstrated the strongest inhibition of microbial growth against Staphylococcus aureus, methicillin-resistant S...
April 2015: Phytotherapy Research: PTR
Sandeep Kumar Tata, Jihye Jung, Yoon-Ha Kim, Jun Young Choi, Ji-Yul Jung, In-Jung Lee, Jeong Sheop Shin, Stephen Beungtae Ryu
Geranylgeranyl pyrophosphate synthase (GGPS) is a key enzyme for a structurally diverse class of isoprenoid biosynthetic metabolites including gibberellins, carotenoids, chlorophylls and rubber. We expressed a chloroplast-targeted GGPS isolated from sunflower (Helianthus annuus) under control of the cauliflower mosaic virus 35S promoter in tobacco (Nicotiana tabacum). The resulting transgenic tobacco plants expressing heterologous GGPS showed remarkably enhanced growth (an increase in shoot and root biomass and height), early flowering, increased number of seed pods and greater seed yield compared with that of GUS-transgenic lines (control) or wild-type plants...
January 2016: Plant Biotechnology Journal
Hemant Kumar Rawat, Mohd Anis Ganaie, Naveen Kango
Owing to applications in the food and nutraceutical industries, inulinases, fructosyltransferases and sucrases have gained considerable attention in recent times. Twenty-five fungal strains were screened for production of these enzymes on three different media formulated using inulin-rich plant extracts prepared from asparagus root, dahlia tuber and dandelion root extract. Culture filtrates of the fungi were examined for hydrolytic activities. Fungi belonging to genus Aspergillus, A. niger GNCC 2655 (11.3 U/ml), A...
March 2015: Antonie Van Leeuwenhoek
Junwei Zhao, Lifeng Guo, Hairong He, Chongxi Liu, Yuejing Zhang, Chuang Li, Xiangjing Wang, Wensheng Xiang
A novel actinomycete, designated strain NEAU-P5(T), was isolated from dandelion root (Taraxacum mongolicum Hand.-Mazz.). Strain NEAU-P5(T) showed closest 16S rRNA gene sequence similarity to Micromonospora chokoriensis 2-19/6(T) (99.5%), and phylogenetically clustered with Micromonospora violae NEAU-zh8(T) (99.3%), M. saelicesensis Lupac 09(T) (99.0%), M. lupini Lupac 14N(T) (98.8%), M. zeae NEAU-gq9(T) (98.4%), M. jinlongensis NEAU-GRX11(T) (98.3%) and M. zamorensis CR38(T) (97.9%). Phylogenetic analysis based on the gyrB gene sequence also indicated that the isolate clustered with the above type strains except M...
October 2014: Antonie Van Leeuwenhoek
Song-Lin Wu, Bao-Dong Chen, Yu-Qing Sun, Bai-Hui Ren, Xin Zhang, You-Shan Wang
In a greenhouse pot experiment, dandelion (Taraxacum platypecidum Diels.) and bermudagrass (Cynodon dactylon[Linn.] Pers.), inoculated with and without arbuscular mycorrhizal fungus (AMF) Rhizophagus irregularis, were grown in chromium (Cr)-amended soils (0 mg/kg, 5 mg/kg, 10 mg/kg, and 20 mg/kg Cr[VI]) to test whether arbuscular mycorrhizal (AM) symbiosis can improve Cr tolerance in different plant species. The experimental results indicated that the dry weights of both plant species were dramatically increased by AM symbiosis...
September 2014: Environmental Toxicology and Chemistry
Shufan Xing, Nicole van Deenen, Pasqualina Magliano, Lea Frahm, Edith Forestier, Christiane Nawrath, Hubert Schaller, Christian S Gronover, Dirk Prüfer, Yves Poirier
Cytosolic acetyl-CoA is involved in the synthesis of a variety of compounds, including waxes, sterols and rubber, and is generated by the ATP citrate lyase (ACL). Plants over-expressing ACL were generated in an effort to understand the contribution of ACL activity to the carbon flux of acetyl-CoA to metabolic pathways occurring in the cytosol. Transgenic Arabidopsis plants synthesizing the polyester polyhydroxybutyrate (PHB) from cytosolic acetyl-CoA have reduced growth and wax content, consistent with a reduction in the availability of cytosolic acetyl-CoA to endogenous pathways...
July 2014: Plant Journal: for Cell and Molecular Biology
E R Grela, S Sobolewska, T Roziński
The objective of the study was to evaluate the effect of inulin or dandelion, chicory and Jerusalem artichoke powder on lipid indices and fatty acid profile in fattener tissues. The experiment involved 120 crossbred pigs (PL x PLW) x Duroc with an initial body weight of 25.0 +/- 0.5 kg. Animals were assigned into 6 groups. A diet for group I (control) did not comprise an inulin additive, group II and III received 2% inulin (water or water-alcohol extraction of inulin from chicory root, respectively), while the mixtures for group IV, V and VI contained 4% root powder from Jerusalem artichoke (topinambur), chicory or dandelion, respectively...
2014: Polish Journal of Veterinary Sciences
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