| surveys of microfungi in a former industrial area in duisburg-nord. | one hundred and forty microfungi (ascomycetes and deuteromycetes) were collected in the "landschaftspark duisburg-nord" located in north rhine-westphalia. new hosts for rarely found fungi are recorded for the first time. new for germany are massaria inquinans (tode) de not. and nitschkia grevillei (rhem) nannf. on acer pseudoplatanus l., pirottaea nigrostriata graddon on artemisia vulgaris l., ceratopycnis clematidis höhn. on clematis vitalba l., dasyscyphus aff. humuli (w. phillips) dennis on h ... | 2002 | 12701427 |
| growth inhibiting activity of lipophilic extracts from dipsacus sylvestris huds. roots against borrelia burgdorferi s. s. in vitro. | fresh first year roots from dipsacus sylvestris huds. were extracted with 70% ethanol, ethyl acetate as well as dichloromethane. extracts were solubilized in water (lipophilic extracts with addition of polysorbate 80) and tested for their activity against borrelia burgdorferi sensu stricto in vitro during an eight-day period using amoxicillin as standard. the hydroethanolic extract showed no growth inhibition whereas significant growth inhibiting activity could be shown in the two less polar fra ... | 2011 | 21901989 |
| understanding the unique flowering sequence in dipsacus fullonum: evidence from geometrical changes during head development. | the genus dipsacus is characterized by a remarkable bidirectional flowering sequence and a rare phyllotactic pattern. considering that flower initiation and flowering sequence may be interconnected, we document the development of the head meristem in dipsacus fullonum. our results indicate a gradual change in the geometry of the head meristem beginning with a dome shaped stage, continuing with a remarkable widening in the middle part of the head meristem and ending in a spindle-like form. quanti ... | 2017 | 28328952 |
| antiproliferative activity and phenotypic modification induced by selected peruvian medicinal plants on human hepatocellular carcinoma hep3b cells. | the high incidence of human hepatocellular carcinoma (hcc) in peru and the wide use of medicinal plants in this country led us to study the activity against hcc cells in vitro of somes species used locally against liver and digestive disorders. | 2015 | 25701751 |
| sequencing of two sunflower chlorotic mottle virus isolates obtained from different natural hosts shed light on its evolutionary history. | sunflower chlorotic mottle virus (sucmov), the most prevalent virus of sunflower in argentina, was reported naturally infecting not only sunflower but also weeds. to understand sucmov evolution and improve the knowledge on its variability, the complete genomic sequences of two sucmov isolates collected from dipsacus fullonum (-dip) and ibicella lutea (-ibi) were determined from three overlapping cdna clones and subjected to phylogenetic and recombination analyses. sucmov-dip and -ibi genomes wer ... | 2013 | 22975998 |
| biology of leipothrix dipsacivagus (acari: eriophyidae), a candidate for biological control of invasive teasels (dipsacus spp.). | the present study describes key aspects of the biology of leipothrix dipsacivagus, an eriophyid mite that is under study as a biological control candidate of dipsacus fullonum and d. laciniatus (dipsacaceae). preliminary host-specificity tests have shown that it can develop and reproduce only on dipsacus spp. (teasels). studies were conducted in a laboratory at 26 ± 2(o)c with 16 h of light per day. mites for the stock colony were collected from d. laciniatus in klokotnitsa, bulgaria and reared ... | 2011 | 21538206 |
| carnivory in the teasel dipsacus fullonum--the effect of experimental feeding on growth and seed set. | the teasel, dipsacus fullonum is known to catch invertebrates in its water filled leaf bases, but experimental testing of reproductive benefits of this have been lacking. we report the effects of insect supplementation/removal and water removal during spring/summer on dipsacus in two field populations. there were no significant treatment effects on biomass, but addition of dead dipteran larvae to leaf bases caused a 30% increase in seed set and the seed mass:biomass ratio. this study provides th ... | 2011 | 21445274 |
| an improved formal approach to demographic loop analysis. | loop analysis is introduced to demographic analysis as a tool to compare relative contributions of different life-history types to population growth rate. in 1998, g. m. wardle brought in basic concepts of the graph theory to demographic loop analysis and proposed a methodology to determine the loops from any life-cycle graph based on these concepts. however, the mathematics behind wardle's methodology cannot readily be used by most population ecologists. a new methodology that is also based on ... | 2007 | 17824444 |
| predictions of fate from rosette size in teasel (dipsacus fullonum l.). | in field populations of the biennial plant (dipsacus fullonum l.) the probability that an individual will die, remain vegetative, or flower during a particular growing season is highly correlated with the size of its vegetative rosette at the end of the growing season of the preceding year. further, a rosette forms a flowering stalk only after attaining a critical size. correlations of various plant fates with rosette size are independent of rosette age; hence size provides better predictions of ... | 1975 | 28308986 |