Search results for "Papaver"
showing 10 items of 61 documents
Groupe de travail COLUMA Bourgogne Franche-Comté : analyse et cartographie de la résistance aux herbicides sur céréales
2013
This working group made a survey and drew maps of herbicide resistances in cereal crops according to modes of action and weed species. These resistances concern mainly grass weeds but also one dicot weeds.
Papaver rhoeas plants with multiple resistance to synthetic auxins and ALS inhibitors
2014
The pattern of resistance to synthetic auxins and ALS inhibitors was investigated in a population of corn poppy (Papaver rhoeas), originating from central Greece. In June 2013 seed capsules and leaf fragments were collected from ten P. rhoeas plants that survived 2,4-D application in a wheat field with an history of ALS-inhibiting herbicide application. The material was collected separately for each plant. DNA from the collected leaf fragments of each plant was subjected to ALS genotyping at codons 197 and 574 using dCAPS assays. The collected seeds were treated with gibberellic acid to break dormancy and each progeny was planted separately in plastic modular trays containing potting soil. …
Is Welsh Poppy,Meconopsis cambrica(L.) Vig. (Papaveraceae), truly aMeconopsis?
2011
AbstractSince the nineteenth century, the western European endemic Meconopsis cambrica has been regarded as the only European representative of the genus Meconopsis Vig. This genus, which is otherwise restricted to the Himalayas, differs from Papaver in having a style rather than a stigmatic disc. A phylogenetic reconstruction using 65 internal transcribed spacer sequences of 62 taxa of Old World Papaveroideae and three outgroup taxa shows that M. cambrica is not the closest relative of the remainder of Meconopsis but rather the closest sampled relative of Papaver s.str. This is consistent with morphological evidence which suggests that the style evolved independently in M. cambrica from a …
Phylogeny of prickly poppies,Argemone (Papaveraceae), and the evolution of morphological and alkaloid characters based on ITS nrDNA sequence variation
1999
Evolutionary relationships withinArgemone (Papaveraceae) were inferred from nucleotide variation in nuclear ribosomal DNA. A complete representation of the genus was achieved by using herbarium material to a large extent (74%). Four distinct clades can be recognized based on the molecular results. The support for the different clades varies greatly due to a very uneven distribution of characters. Although some clades are largely unresolved, some unexpected relationships, for example the sister group relationship of the relict speciesA. subintegrifolia to the rest ofArgemone, were found. The evolution of morphological and alkaloid characters against the background of the obtained phylogeny i…
New records of Cynipidae (Hymenoptera) from Italy
2015
New records of Cynipid gall wasps and inquilines for the Italian peninsula and Sicily and their new host plants for the Palaearctic Region are listed and commented on. Among them we find: Cerroneuroterus cerrifloralis (Mullner 1901) as new for Italy and new for the Palaearctic region as host on Quercus suber; Andricus multiplicatus Giraud 1859 on Q. suber, as new host for the Palaearctic region; Aylax papaveris (Perris 1839), reported in Italy over a century ago, but later overlooked; Cerroneuroterus minutulus (Giraud 1859), also reported more than a century ago from Sicily, but later overlooked. Among the inquilines are here listed: Synergus variabilis Mayr 1872, emerged from Janetia cerri…
Comparative analysis of leaf shape development inEschscholzia californicaand other Papaveraceae-Eschscholzioideae
2011
Dissected leaves in Papaveraceae-Eschscholzioideae have an architecture frequently encountered in the basal eudicot clade Ranunculales that could represent an ancestral condition for eudicots. Developmental morphology of foliage leaves was investigated using scanning electron microscopy and focusing on primordium formation activity (primary morphogenesis) at the leaf margin. Eschscholzia californica, E. lobii, and Hunnemannia fumariaefolia had a polyternate-acropetal mode of leaf dissection. Segment formation continued around the whole leaf blade periphery. Differences in mature leaf architecture was traced to variations in regional blastozone activity and duration. Epidermal cell size meas…
Selective chiral inhibition of Ca2+ entry promoted by bisbenzyltetrahydroisoquinolines in rat uterus.
1992
Abstract The effects of diltiazem and six bisbenzyltetrahydroisoquinoline alkaloids (antioquine, 7-O-methylantioquine, dimethylantioquine, monterine, granjine and cordobimine) were studied in rat isolated uterus in order to clarify the mechanisms of their relaxant actions. All the compounds tested completely relaxed KCl-induced contractions and totally or partially inhibited oxytocin-induced rhythmic contractions. Only alkaloids with absolute configurations (1R,1′S or 1R,1′R) acted intracellularly, promoting relaxation of contractile responses induced by oxytocin in a Ca2+-free medium, as does papaverine. Alkaloids of the antioquine series (1S,1′R) selectively inhibited Ca2+ entry. The grea…
1H NMR-based metabolic profiling for evaluating poppy seed rancidity and brewing
2015
Poppy seeds are widely used in household and commercial confectionery. The aim of this study was to demonstrate the application of metabolic profiling for industrial monitoring of the molecular changes which occur during minced poppy seed rancidity and brewing processes performed on raw seeds. Both forms of poppy seeds were obtained from a confectionery company. Proton nuclear magnetic resonance (1H NMR) was applied as the analytical method of choice together with multivariate statistical data analysis. Metabolic fingerprinting was applied as a bioprocess control tool to monitor rancidity with the trajectory of change and brewing progressions. Low molecular weight compounds were found to be…
Inhibition of calcium entry induced by cularines and isocrasifoline in uterine smooth muscle.
1991
Abstract The effects of nifedipine, papaverine and four benzylisoquinoline alkaloids (cularine, cularidine, celtisine and isocrasifoline) were studied in isolated rat uterus in order to clarify the mechanism of their relaxant action. All the compounds tested completely relaxed KCl-induced contractions and totally or partially inhibited oxytocin-induced rhythmic contractions. Only papaverine acted intracellularly, promoting relaxation of contractile responses induced by oxytocin or vanadate in a Ca 2+ -free medium. In spite of the structural relationship between papaverine and the other alkaloids, the mechanism of their relaxant action is not the same. The activities of cularine derivatives …
Comparing the Outcomes of Different Agents to Treat Vasospasm at Microsurgical Anastomosis during the Papaverine Shortage.
2017
Letter to Editor