Search results for "cyclamen persicum"
showing 7 items of 7 documents
Wilt and Collapse of Cuphea ignea Caused by Phytophthora tropicalis in Italy.
2006
The genus Cuphea (Lythraceae) includes approximately 250 species of annual, evergreen perennials and short shrubs native to Central and South America. During the springs of 2003 and 2004, 10% of the nursery stock of approximately 12,000 potted cigar-flowers (C. ignea A. DC) grown in a screenhouse at a commercial ornamental nursery near Piedimonte Etneo, Sicily, had symptoms of wilt, defoliation, and rapid collapse of the entire plant. These foliar symptoms were associated with a reduced root system, browning of the collar, and dark brown discolored roots. A Phytophthora species was consistently recovered by plating small pieces of rotted roots of symptomatic plants onto selective medium (3…
Influence of SiO2 nanoparticles on relative fluorescence of plant cells
2015
Nanoparticles (nano-scale particles (NSPs)) are defined as particles with dimensions less than 100 nm. SiO<sub>2</sub> nanoparticles are one of the most widely common nanoparticles in the environment, particularly in urban areas. The sources of SiO<sub>2 </sub>nanoparticles are very different, including natural nanoparticles, anthropogenic and engineered nanoparticles. The SiO<sub>2 </sub>nanoparticles could be considered a source of different pollution effects on leaving organisms. Nevertheless, knowledge of the mechanisms, through which the SiO<sub>2 </sub>nanoparticles affect cells, is incomplete. The aim of the research was to elaborate a …
Triterpene Saponins from Cyclamen persicum
2010
A new triterpene saponin 3- O-β-D-glucopyranosyl-(1→4)-α-L-arabinopyranosyl-16α-hydroxy-13β,28-epoxy-oleanan-30-al (1), along with four known triterpene glycosides (2-5) were isolated from Cyclamen persicum. Their structures were characterized by a combination of 1D- and 2D-NMR (1H-1H COSY, TOCSY, NOESY, HSQC, and HMBC) and MS spectrocopic data. The cytotoxicity of compounds 2 and 4 was evaluated using two human colon cancer cell lines HT-29 and HCT 116.
Fusarium wilt of cyclamen : early detection and biocontrol
2016
Fusarium wilt of cyclamen is one of the most damaging diseases of cyclamen. The causal agent, Fusarium oxysporum f. sp. cyclaminis, is a soil-borne fungus. Losses can reach more than 50 % of the production. Several methods of control are available, but none of them offer an efficient and environmentally friendly solution. In this context, a project was developed in collaboration with the French institute of horticulture, Astredhor, which represents the producers, the INRA of Dijon, for its expertise on F. oxysporum and the company Agrene for its expertise in biological control. The project has two goals: i) design a molecular marker specific of Fusarium oxysporum f. sp. cyclaminis allowing …
Fusariose du cyclamen : travaux sur la lutte biologique. Phytoma-La défense des végétaux
2016
SPEIPM; Fusariose du cyclamen : travaux sur la lutte biologique. Phytoma-La défense des végétaux
Amber Particles as Living Plant Cell Markers in Flow Cytometry / Dzintara Daļiņas Kā Dzīvu Augu Šūnu Marķieri Plūsmas Citometrijā
2015
Abstract The unique biological properties of amber are well known. Amber particles that penetrate into the cellular matrix can potentially be used as markers of plant cell biological activity by identification of living cells in flow cytometry. However, there have been no studies on effect of amber particles on plant cells. The aim of this study was to determine effect of amber nano- and micro- (5 nm-3 μm) particles on somatic and gametic cells and to assess the possibility to use amber particles as alive plant cells markers. To reach the aim, fluorescence of cells was determined in the presence of amber particles, and amber components - spirit of amber and sodium succinate dibasic hexahydr…
Fusariose du cyclamen : vers un outil de détection précoce
2016
SPEIPM; Fusariose du cyclamen : vers un outil de détection précoce