Specialized metabolites in plants influence their interactions with other species, including herbivorous insects, which may adapt to tolerate defensive phytochemicals. The chemical arsenal of Alliaria petiolata (garlic mustard, Brassicaceae) includes the glucosinolate sinigrin and alliarinoside, a hydroxynitrile glucoside with defensive properties to glucosinolate-adapted specialists. To further our understanding of the chemical ecology of A. petiolata, which is spreading invasively in North America, we investigated the metabolite profile and here report a novel natural product, petiolatamide, which is structurally related to sinigrin. In an extensive study of North American populations of A. petiolata, we demonstrate that genetic population differences as well as developmental regulation contribute to variation in the leaf content of petiolatamide, alliarinoside, sinigrin, and a related glycoside. We furthermore demonstrate widely different metabolic fates of these metabolites after ingestion in the

Though most introduced species do not survive, a select few are able to successfully colonize new habitats. Among these few successful invaders is garlic mustard (Alliaria petiolata), a biennial Eurasian forb that was introduced to the United States by early colonists. By 1886, the herb was found amidst native plant communities in Long Island and today has established notable distribution in thirty-seven U.S. states, five Canadian provinces, and parts of New Zealand. In its non-native range, garlic mustard has been shown to disrupt mycorrhizal associations of surrounding native plants, hindering growth and survival of its competitors through the production of toxic secondary metabolites such as flavonoids, defense proteins, alliarinoside, flavonoid glycosides, glucosinolates, and cyanide. Laboratory studies have suggested that garlic mustard decreases the abundance of entomopathogenic fungi, which serves as a natural control of arthropod populations. However, this pattern was not detected in a 15 site

The term allelopathy from the Greek-derived compounds allelo- and -pathy (meaning "mutual harm" or "suffering"), was first used in 1937 by the Austrian professor Hans Molisch in the book Der Einfluss einer Pflanze auf die andere - Allelopathie (The Effect of Plants on Each Other - Allelopathy) published in German.[3] He used the term to describe biochemical interactions by means of which a plant inhibits the growth of neighbouring plants.[4] In 1971, Whittaker and Feeny published a study in the journal Science, which defined allelochemicals as all chemical interactions among organisms.[3] In 1984, Elroy Leon Rice in his monograph on allelopathy enlarged the definition to include all direct positive or negative effects of a plant on another plant or on micro-organisms by the liberation of biochemicals into the natural environment.[5] Over the next ten years, the term was used by other researchers to describe broader chemical interactions between organisms, and by 1996 the International ...

CVC is a community-based environmental organization originally formed by an Act of provincial government and dedicated to conserving, restoring, developing and managing natural resources on a watershed basis.

A common edible plant (sometimes described as a weed) which can be eaten as cooked greens or as salad leaves. It has a variety of names - sauce-alone, Jack-by-the-hedge and so on - which indicates that it has been well-known to... more

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Known since ancient times, the phenomenon of allelopathy has recently received greater attention from researchers and farmers worldwide. Crop failures and low yields caused by the reseeding,...

Mitreola petiolata, Caribbean Miterwort. NameThatPlant.net currently features 3729 plants and 22,993 images. For many plants, the website displays maps showing physiographic provinces within the Carolinas and Georgia where the plant has been documented.

A natural process in which harmful or beneficial effects are caused by secondary metabolites that spread from a donor organism to a recipient and are produced by plants, algae, bacteria, and fungi. Allelopathy is a key ecological process and has ...

A natural process in which harmful or beneficial effects are caused by secondary metabolites that spread from a donor organism to a recipient and are produced by plants, algae, bacteria, and fungi. Allelopathy is a key ecological process and has ...

Duke, S.O., Baerson, S.R., Pan, Z., Kagan, I., Sanchez-Moreiras, A., Reigosa, M.J., Pedrol-Bonjoch, N., Schulz, M. 2005. Genomic Approaches to Understanding Allelochemical Modes of Action and Defenses Against Allelochemicals. Harper, J.D.I., An, M., Wu, H., Kent, J.H., Editors. Charles Sturts University, Wagga Wagga, Australia. Proceedings of the 4th World Congress on Allelopathy. P. 107-113 ...

Get information, facts, and pictures about Allelopathy at Encyclopedia.com. Make research projects and school reports about Allelopathy easy with credible articles from our FREE, online encyclopedia and dictionary.

International Seed Testing Association (1976). International rules for seed testing. Seed Science Technology 4, 1-180.. Li ST, Zhou JM and Wang HY (2002). Research surveys of allelopathy in plants. Chinese Journal of Eco-Agriculture 10, 68-70.. Montrose I (1845). Fairy rings. Gard. Chron. 5, 722.. Mo MH, Ma HM and Xiao QF (2004). Study of the allelopathic effects of the ethanol-soluble extracts of Lactarius hatsudake on Oryza sativa and Echinoloa crusgall. Acta Ecologica Sinica 24, 2951-2954.. Mao XL (1992). Investigation of mushrooms in Hongkong. Edible Fungi of China 11, 3-5. Peng SL, Wen J and Guo QF (2004). Mechanism and active variety of allelochemicals. Acta Botanic Sinica 46, 757-766.. Rice E L (1984). In Allelopathy. Orlando Florida (Academic Press Inc) (2nd ed), pp.119.. Sturz AV, Christie BR and Matheson BG (1998). Associaciation of bacterial endophyte populations from red clover and potato crops with popential for beneficial allelopathy. Can-j-microbiol 44, 162-167.. Willamson GB ...

OBJECTIVE: Removal of the invasive weed, Garlic Mustard, from Maybury State Park, Northville, MI. HISTORY: Garlic Mustard (Alliaria petiolata) is a member of the mustard family and is native to Europe. The leaves have a pungent garlic smell when crushed, hence its name. It is an invasive species in woodlots of the US and Canada. Garlic Mustard reproduces so prolifically that in a short period of time it will convert a diverse natural habitat into a monoculture consisting only of itself.. Garlic Mustard was brought into this country by the early European settlers. The plant was used for food and medicine in old world households. It is high in vitamins A and C and was very important to the diets of early settlers.. Garlic Mustard invades and replaces the native plant diversity and is not beneficial to wildlife. By out competing our native woodland wildflowers, large areas of Maybury State Park have been infested by this nuisance plant.. ACTION PLAN: There are several methods used to remove and ...

Above: The invasive Eurasian woodland plant Alliaria petiolata, more commonly known as garlic mustard, looking appropriately dramatic. Garlic mustard is most obvious in Northeastern woods around this time of year, when it is in full bloom. Photo by Flickr user Brian Hefele; published under Creative Commons license.Call it Conservation 2.0: Citizen science is getting more and more digitally connected all the time.Take iMapInvasives, an ambitious new project for mapping the spread of invasive species. iMapInvasives combines citizen reports from the field with larger databases maintained by state agencies and nonprofits, allowing backyard nature buffs to make real contributions to public scientific knowlege on invasives.

Garlic Mustard, Alliaria petiolata If you have ventured out walking the woods this week, you may have noticed clusters of small…

Bartolucci, F. & Conti, F. 2013. Taxonomic notes on Geum micropetalum Gasp. and Geum heterocarpum Boiss. (Rosaceae) in Italy. Plant Biosystems 147(3): 806-811. DOI: 10.1080/11263504.2013.829886 Reference page ...

A rock and sand garden favorite, Prairie Smoke is one of the most distinctive and best loved prairie plants with pink feathery pink seedheads. Geum triflorum blooms in spring and spreads slowly by rhizome to form a low growing groundcover on well-drained soil.

An allelopathic organism is one that can produce chemicals that interfere with the growth of other organisms. While allelopathic...

Durante el otoño y la primavera de 1998 y 1999 se realizó un estudio en un predio de secano de la IX Región, para determinar la producción de carne bovina, producción y calidad de la MS, y grado de fijación simbiótica de N de las praderas naturalizadas de trébol subterráneo (Trifolium subterraneum L.) y de serradella amarilla (Ornithopus compressus L.). El diseño experimental usado fue de bloques completos al azar. Las producciones de MS de la pradera de trébol subterráneo fueron de 4.700 kg ha-1 en ambas temporadas y en serradela de 5.900 y 7.100 kg ha-1 para la primera y segunda temporada, respectivamente (P ,= 0,05). La composición química y fijación simbiótica en ambas praderas fueron similares (P , o = 0,05). Durante la primera temporada la ...

Although I had toyed with the idea of placenta encapsulation early on in my pregnancy with Phoebe I decided against it after my 12 week scan showed there were two foetuses in my womb… but only one had a heartbeat. As our lost twin remained visible at the 20 week scan I was advised by my midwife that it would eventually be reabsorbed and flattened from the pressure of the surviving twin to ultimately form part of my placenta (fetus compressus). I struggled with feelings of loss throughout my pregnancy and often felt quite freaked out by the idea of the deceased foetus still being inside me alongside my healthy baby girl. I found it hard to announce my pregnancy as my joy was always tinged with sadness and, in hindsight, I think I worried more about my surviving baby knowing that one baby had not made it ...

TY - JOUR. T1 - Quantitative trait loci and molecular markers associated with wheat allelopathy. AU - Wu, Hanwen. AU - Pratley, James. AU - Ma, W. AU - Haig, Terrence. N1 - Imported on 12 Apr 2017 - DigiTool details were: Journal title (773t) = Theoretical and Applied Genetics: international journal of plant breeding research. ISSNs: 0040-5752; PY - 2003. Y1 - 2003. N2 - Wheat (Triticum aestivum L.) has been examined for allelopathic potential against annual ryegrass (Lolium rigidum). The bioassay technique, equal-compartment-agar-method, was employed to evaluate seedling allelopathy in a doubled-haploid (DH) population derived from cv Sunco (weakly allelopathic) and cv Tasman (strongly allelopathic). A significant difference in allelopathic activity was found among the DH lines, which inhibited the root length of ryegrass across a range from 23.7 to 88.3%. The phenotypic data showed that wheat allelopathic activity was distributed normally within this DH population and a substantial ...

Patrick E. McCullough, Jialin Yu, J. Scott McElroy, S. Chen, H. Zhang, Timothy L. Grey, and Mark A. Czarnota (2016) ALS-Resistant Annual Sedge (Cyperus compressus) Confirmed in Turfgrass. Weed Science: January-March 2016, Vol. 64, No. 1, pp. 33-41.. Acetolactate synthase (ALS) inhibitors are widely used for POST control of sedges in turfgrass. A suspected resistant (R) biotype of annual sedge was collected from a bermudagrass turf in Georgia with a history of exclusive use of halosulfuron. Research was conducted to evaluate the resistance level of this biotype to halosulfuron, efficacy of ALS-inhibiting herbicides and other mechanisms of action for control, and the molecular and physiological basis for resistance. In greenhouse experiments, the halosulfuron rate required to reduce shoot biomass 50% in comparison with the nontreated at 8 wk after treatment (WAT) were 8 and , 1,120 g ai ha−1 for the S (susceptible) and R biotypes, respectively. Imazapic, sulfosulfuron, and trifloxysulfuron ...

Native: indigenous.. Non-native: introduced (intentionally or unintentionally); has become naturalized.. County documented: documented to exist in the county by evidence (herbarium specimen, photograph). Also covers those considered historical (not seen in 20 years). State documented: documented to exist in the state, but not documented to a county within the state. Also covers those considered historical (not seen in 20 years).. Note: when native and non-native populations both exist in a county, only native status is shown on the map.. ...

The germination of seeds under field conditions is often influenced by the presence of other plants. This interference arises from allelopathy (Rice, 1984). Allelopathy is an important mechanism of plant mediated by the release of plant produced phytotoxins to the plant environment. Soil sickness problem in crop growing could also be attributed to the allelopathic effects or even the autotoxicity (Singh et al. 2002). The toxicity of allelochemicals released in the environment is the function of their concentration as well as age and metabolic stage of the donor-plant (Rice 1984; Wardle et al. 1993). Saffron (Crocus sativus L.) is a perennial plant with succulent corm, belonging to Iridaceae family. Saffron is considered to be the most expensive spice in the world. The flower of saffron is a light purple, with thread-like reddish coloured stigma that is valued both as a spice and as a natural dye. Saffron is a perennial crop with longevity more than 12 years, but farmers have actually understood ...

Buy Allelopathy: A Physiological Process with Ecological Implications (9781402042799): NHBS - Edited By: Manuel J Reigosa, Nuria Pedrol and Luis Gonzalez, Springer-Verlag

  Allelopathy is a process in which secondary metabolites produced by plants, micro-organisms, viruses and fungi control growth and development of other biological systems. Some plants may beneficially or antagonistically affect other plants through allelochemical compounds which may be released directly or indirectly from live or dead parts and cause allelopathic and phytotoxic effects. In Kerman province of Iran, cultivating corn after winter wheat usually causes less growth and yield, hence, this study was conducted to estimate the effects of different concentrations of two native Iranian wheat (Alvand and Falat) straw extracts on germination, radicle growth, coleoptile length, plant height, leaf area (LA), wet weight (WW) and dry weight (DW) of two hybrid corn varieties (single cross 704 and 647). Results showed that the straw extracts had significant negative allelopathic effects on both corn varieties' growth furthermore based on the study results, we suggest that before corn

...PITTSBURGHToo much garlic mustard in your neighborhood forest? Actuall...A research team led by Susan Kalisz professor of evolutionary ecology...The study initiated in 2003 at the Trillium Trail Nature Reserve in F...Garlic mustard ( Alliaria petiolata ) is a plant native to Europe...,Excessive,deer,populations,hurt,native,plant,biodiversity,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters

Shinhwa Group is shown to be one of South Koreas largest conglomerates and is headed by the strictly arrogant Kang Hee-soo. Her son Gu Jun-pyo (Lee Min-ho) is the leader of F4, the most popular and powerful group of boys at the prestigious Shinhwa High School. Yoon Ji-Hu (Kim Hyun-Joong), So Yi-jung, and Song Woo-bin - Gu Jun-pyos friends and rich heirs in their own right - are all members of the group. When F4 bullies a boy to the verge of suicide, the poor but vivacious Geum Jan-di (Ku Hye-sun) saves his life and receives a swimming scholarship to attend the High School. Geum Jan-dis family runs a dry cleaning business and she lives in a small home with her parents, Geum Il-bong and Na Gong-joo, and her younger brother Geum Kang-san. Immediately, Geum Jan-di dislikes her wealthy classmates and is disgusted by the obsession surrounding the F4 boys. Irked by her strong-headed nature, Gu Jun-pyo singles out Geum Jan-di to bully but she stands up to him and he begins to fall in love with her. ...

You can see the original in this link : or as copied in the images below:. https://docs.neb-one.gc.ca/ll-eng/llisapi.dll/fetch/2000/90464/90552/548311/956726/2392873/2450810/2478758/2522888/Material_Safety_Data_Sheet_-_Diluted_Bitumen_-_A4A9D1.pdf?nodeid=2508614&vernum=-2. ALSO: The following link gives the Occupational and Health Guidelines for Benzene, a Potential Human Carcinogen. https://docs.neb-one.gc.ca/ll-eng/llisapi.dll/fetch/2000/90464/90552/548311/956726/2392873/2450810/2478758/2522888/Occupational_Safety_and_Health_Guideline_for_Benzene_-_A4A9D2.pdf?nodeid=2504533&vernum=-2. Below are copies of the MDS:. ...

...Humans do it chimpanzees do it cuckoos do it cheating to score a fr... There are cheaters out there that we didnt know of said William Dr...Driscoll isolated several strains of the species Prymnesium parvum... When those cheaters are cultured with their toxic counterparts the...,They,hunt,,they,kill,,they,cheat:,Single-celled,algae,shed,light,on,social,lives,of,microbes,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters

COSEWIC. 2010. COSEWIC assessment and status report on the Eastern Mountain Avens Geum peckii in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. x + 33 pp.

The term Allelopathy as it applies to the area of reclamation can be defined as Influence of plants upon each other caused by products of metabolism, e.g., creosote bushes produce a toxic substance which inhibits the growth of other plants in the immediate vicinity. ...

Means in a column not sharing a common letter differ significantly by Fishers protected LSD at 5% probability level.. Data revealed that all intercropping treatments significantly reduced total weed dry weight over component sole crop of wheat sown by drill method (Table 1). Of all the intercropping treatments i.e. mixed cropping of wheat + canola appeared relatively more effective with 90% inhibition in total weed dry weight. While, other intercropping treatments like one row of wheat + one row of canola, two rows of wheat + two rows of canola and four rows of wheat + four rows of canola generally suppressed weed dry weight by 90, 85, and 86%, respectively. This weed control in wheat-canola intercropping systems might be due to either their shading effect/interference (allelopathy + competition) or better utilization of available resources than their component sole crops and Wanic et al. (2004) said that some species release allelopathic compounds which limit the occurrence of weeds, while ...

Leucojum aestivum, commonly called summer snowflake, blooms in mid-spring (late April), not in summer. It blooms several weeks after spring snowflake (Leucojum vernum) and usually goes dormant by summer. Dark grassy green leaves to 12" long and 1" wide form an upright, vase-shaped clump of foliage. Typically 2-5 (less frequently to 8) white, nodding, bell-shaped flowers appear at the top of naked hollow flower scapes (to 12-15" tall) in spring. Each flower has three similar looking sepals and petals (tepals) that are spotted at the tip with green ...

At our Laetitia Vineyard, the year was marked by an uncharacteristically dry spring with higher than normal night time temperatures. This resulted in a mid-February bud break-almost 3 weeks earlier when compared to 2012 and 2013. The warmer than usual spring temperatures accelerated shoot growth, bloom, fruit set and veraison. However, this changed during the […]. Read More. ...

The water from the Santissima spring is classified as a bicarbonate-sulphate-lime-alkaline-terrous water. It is used at the Terme di Chianciano spa facility for inhalations and aerosol therapy for adults and children, and for nasal douches. It is a hypothermal water (spring temperature, 24°C). It exerts

According to experts at American Family Childrens Hospital, warm spring temperatures and the end of school combine to send thousands of kids into backyards and onto playgrounds, where theyre breaking their bones at startling rates-on rollerblades, on bikes, playground equipment and trampolines.

In July 1999 when spring temperatures were examined, it was clear to me this season would be one in which BP would be a serious problem. I selected six Braeburn orchards from Tonasket to Pasco and used a treatment to induce BP in an effort to try and predict occurrence out of storage. Fruit were harvested the day of commercial harvest in each orchard and taken to the lab. At the lab, 300 fruit were immediately dipped for 2 minutes in a solution of ethrel (2000 ppm) and magnesium chloride (MgCl2, 1%), allowed to air dry, and held for 0, 2, and 4 weeks at 68 °F (ripening). The remaining 300 apples were untreated, and placed in regular storage at 33 °F for 8, 16, and 24 weeks. At 0, 2, and 4 weeks, fruit held at 68 °F were removed and the BP was assessed both by examining the fruit surface and cutting the fruit into 6 to 8 transverse slices. At 8, 16, and 24 weeks, fruit held at 33 °F was also removed and assessed for BP in the same manner. In this way, we hoped we could determine whether the ...

Tripathi, S.; Prakash, V.: Studies on Zingiberaceae of N.E. India: VI. A new distributional record of Curcuma petiolata Roxb. In: Journal of Economic and Taxonomic Botany Vol. 22 (no. 2), p. 468-470 (1998), ISSN 0250-9768, CODEN JETBDQ ...

Kawa Abdulkareem Ali, Pakhshan Mustafa Maulood Field Crops Dep., Agricultural College, Salahaddin University, Kurdistan Region, Iraq Biology, College of Science, Salahaddin University, Kurdistan Region, Iraq Key words: Allelopathy, growth parameters. Abstract Allelopathic potential of twelve local varieties of grapevine Vitis vinifera fruits: taefi; zareg-dohuok; Baetmuni; Black-manga; Sarqala-bakrajo; Awelka; Rash-merii; Mala-Hassan; Ashgar-basraha; Kamalii; Toli-mawelian and Shekh-nuraddin…

Geum urbanum is a PERENNIAL growing to 0.5 m (1ft 8in) by 0.5 m (1ft 8in). It is hardy to zone (UK) 6 and is not frost tender. It is in flower from June to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees. The plant is self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Zoanthids, Leathers, allelopathy - 1/22/07 Hey you guys are amazing. ,Thank you for this, Kyle. Is greatly appreciated., My Question is about Zoas. My 30-gallon tank has been running for about 3 years and I just started coral maybe 3 months ago. ,Ok, I just started slowly with 2 small Acro frags and a small colony of green Zoas. ,Acroporids are typically considered among the harder to care for, especially for coral beginners., Everything was thriving the zoas looked amazing. I since purchased 2 more colonies of zoas and some leather. now its been 2 weeks and none of the Zoas will come out. ,Allelopathy from your leathers, too likely. Most leathers are quite noxious. Have a look here: http://www.wetwebmedia.com/alcyoniids.htm and the linked files above., They just stay tightened up all day. I have a 15 gallon sump, 250W Metal halide lights, and a run of the mill protein skimmer. My tanks stats are 8.4 PH, 310 cal (I know its low but I have been adding in Kents calcium increaser 3 times a week and ...

Understanding the plankton dynamics can potentially help us take effective measures to settle the critical issue on how to keep plankton ecosystem balance. In this paper, a nutrient-phytoplankton-zooplankton (NPZ) model is formulated to get insight into understanding the mechanism of plankton dynamics. To account for the harmful effect of the phytoplankton allelopathy, a prototype for a non-monotone response function is used to model zooplankton grazing, and nonlinear phytoplankton mortality is also included in the NPZ model. The main purpose of the paper is to analyze the complex dynamics of the NPZ model, particularly focus on understanding how the phytoplankton allelopathy and nonlinear phytoplankton mortality affect the plankton population dynamics. We first examine the existence of multiple equilibria and provide a detailed classification for the equilibria of the NPZ system, then stability and local bifurcation are also studied. Sufficient conditions for Hopf bifurcation, Bogdanov-Takens ...

A surgical apparatus for delivering a conductive fluid to a target site for ablating bodily tissue. The apparatus includes a tube fluidly connected to a source of conductive fluid. The tube defines a proximal portion, a distal portion and a central pathway. The central pathway extends from the proximal portion to the distal portion and is configured to direct flow of conductive fluid to the distal portion. The distal portion is configured for placement at a target site of bodily tissue and forms a helical slot. The helical slot is configured to allow flow of conductive fluid from the central pathway. Following delivery of the conductive fluid, an electrical current is applied to create a virtual electrode for ablating bodily tissue at the target site.

Foggy day and everywhere is far too damp to work outside. So, tunnel working day. Nice easy job, going through the plants in there and removing dead leaves etc. First one I picked up (Geum Abendsonne) had no roots and in the compost, a Vine weevil grub. Now this is not a surprise as they love Geums, but every plant in the tunnel was stood to its neck over night in strong Provado,so in theory that should have killed off any grubs.. So instead of a nice easy job, every plant in there has to be unpotted and checked. There are a lot of plants, for example over 400 baby Auriculas. They too are Vine weevil fodder.. Found grubs in five more Geums, but none in the Auriculas so far. Only a a thousand plants to go.. ...

Not exactly sure the best way to tackle this, but...as far as plants being allelopathic, many early successional, old-field type species grow fast and take up whatever sunlight they can get. Sunflowers probably fall into this group because they grow rather tall in short order. Usually those species do not invest so many resources into chemical competition because they are annuals. Their seeds are dispersed and take hold where ever there is plenty of light. Over time, the old field is taken over by taller, longer lived species which by the nature of their longer lifespan they have to be better competitors to keep their foothold. The competition can take multiple forms (growing very slowly in the understory and shooting up when a gap develops is one) including allelopathy. On the other hand, some plants have evolved to share resources with others of their own species and also with fungi. Its a crazy world and Mother Nature is always encouraging different strategies ...

As spring temperatures warm, powdery mildew can spread rapidly in wheat, limiting yield. Learn how to spot and stop powdery mildew.

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Geum quellyon Sweet, a perennial herb of the Rosaceae family, has been used in the traditional medicine of the Mapuche Amerindians of Chile to treat tooth neuralgia, gastric inflammation, prostatitis and to regulate menstruation, and for its diuretic and aphrodisiac properties. Although many benefits have been claimed for this plant, few scientific studies are available in the literature. In this study, we investigated the antioxidant activity of a methanolic extract of Geum quellyon roots. We also examined the anticancer action of this plant on Caco-2 (colon adenocarcinoma cells), DU-145 (androgen-insensitive prostate cancer cells) and KB (oral squamous carcinoma cells) human tumor cell lines. Our data showed that Geum quellyon extract, containing tannins, exhibits interesting antioxidant properties, expressed by its capacity to scavenge 1,1-diphenyl-2-picryl-hydrazyl radical (DPPH) and superoxide anion (O 2-), to inhibit xanthine oxidase activity, to chelate metals, and to protect plasmid DNA ...