The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform
Mariangela Miele - One of the best experts on this subject based on the ideXlab platform.
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In vitro cell cultures obtained from different explants of Corylus avellana produce Taxol and taxanes.
BMC biotechnology, 2006Co-Authors: Federica Bestoso, Laura Ottaggio, Andrea Armirotti, Alessandro Balbi, Gianluca Damonte, Paolo Degan, Mauro Mazzei, Francesca Cavalli, Bernardetta Ledda, Mariangela MieleAbstract:Background Taxol is an effective antineoplastic agent, originally extracted from the bark of Taxus brevifolia with a low yield. Many attempts have been made to produce Taxol by chemical synthesis, semi-synthesis and plant tissue cultures. However, to date, the availability of this compound is not sufficient to satisfy the commercial requirements. The aim of the present work was to produce suspension cell cultures from plants not belonging to Taxus genus and to verify whether they produced Taxol and taxanes. For this purpose different explants of hazel (Corylus avellana species) were used to optimize the protocol for inducing in vitro callus, an undifferentiated tissue from which suspension cell cultures were established.
Federica Bestoso - One of the best experts on this subject based on the ideXlab platform.
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In vitro cell cultures obtained from different explants of Corylus avellana produce Taxol and taxanes.
BMC biotechnology, 2006Co-Authors: Federica Bestoso, Laura Ottaggio, Andrea Armirotti, Alessandro Balbi, Gianluca Damonte, Paolo Degan, Mauro Mazzei, Francesca Cavalli, Bernardetta Ledda, Mariangela MieleAbstract:Background Taxol is an effective antineoplastic agent, originally extracted from the bark of Taxus brevifolia with a low yield. Many attempts have been made to produce Taxol by chemical synthesis, semi-synthesis and plant tissue cultures. However, to date, the availability of this compound is not sufficient to satisfy the commercial requirements. The aim of the present work was to produce suspension cell cultures from plants not belonging to Taxus genus and to verify whether they produced Taxol and taxanes. For this purpose different explants of hazel (Corylus avellana species) were used to optimize the protocol for inducing in vitro callus, an undifferentiated tissue from which suspension cell cultures were established.
O. Yavuz Ataman - One of the best experts on this subject based on the ideXlab platform.
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Determination of boron in hazelnut (Corylus avellana L.) varieties by inductively coupled plasma optical emission spectrometry and spectrophotometry
Food Chemistry, 2003Co-Authors: Atilla Şimşek, Deniz Korkmaz, Y.sedat Velioǧlu, O. Yavuz AtamanAbstract:Boron content of 16 Turkish hazelnut (Corylus avellana L.) cultivars were determined by using inductively coupled plasma optical emission spectrometry (ICP-OES) and Azomethine H. spectrophotometric method. The results varied between 13.8 and 22.2 mg/kg. No significant difference was observed between the results by the two methods (P > 0.05). However, the difference among boron content of hazelnut varieties was found to be significantly important (P < 0.01). The highest boron content was in Mincane (20–22.2 mg/kg). Results revealed that the Turkish hazelnut is a good natural source of boron.
Paolo Boccacci - One of the best experts on this subject based on the ideXlab platform.
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evaluation of tonda di giffoni hazelnut Corylus avellana l clones
Scientia Horticulturae, 2010Co-Authors: Milena Petriccione, Paolo Boccacci, Loredana F Ciarmiello, Antonio De Luca, Pasquale PiccirilloAbstract:Abstract ‘Tonda di Giffoni’ is among the most highly appreciated Italian hazelnut (Corylus avellana L.) cultivars. Due to its round kernels and excellent processing quality, it was awarded a Protected Geographical Indication (PGI) from the European Union. To identify clones expressing improved nut and production qualities, a ‘Tonda di Giffoni’ clonal selection programme was conducted across hazelnut orchards in the Irno valley of Italy from 1995 to 2006. One hundred different clones were selected and propagated in a replicated trial under similar climate, soil, and cultural conditions. From this work, the 29 best clones were identified and from 2006 to 2008 their agronomic and pomological characteristics were observed. Microsatellite or simple sequence repeat (SSR) markers were used to successfully confirm true-to-type identity of the clones. Traits evaluated included flowering time (anthesis), bud break, suckering, trunk diameter, nut and kernel characteristics and productivity (yield). Best linear unbiased predictions for clone means and estimates of intraclass correlation coefficient were obtained using R environment, lme4 and ggplot2 packages. Five clones superior to that of the standard of ‘Tonda di Giffoni’ were identified in this study. Furthermore, yield and number of suckers produced showed sufficient variability to likely be exploited for breeding. The selected clones express features useful for both growers and the processing industry and will be propagated and planted in hazelnut orchards for further study and commercial production.
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Investigating the origin of hazelnut (Corylus avellana L.) cultivars using chloroplast microsatellites
Genetic Resources and Crop Evolution, 2009Co-Authors: Paolo Boccacci, Roberto BottaAbstract:The place and time of European hazel ( Corylus avellana L.) domestication is not clear, although it was already cultivated by the Romans. In this study, 75 accessions from Spain, Italy, Turkey, and Iran were analysed using 13 chloroplast microsatellite to investigate the origin and diffusion of hazelnut cultivars. Four loci were polymorphic and identified a total of four different chlorotypes. Their distribution was not uniform in each geographical group. The most frequent chlorotype A was present in all groups. An increase in chlorotype number and diversity from Spain eastward to Italy, Turkey, and Iran was observed. Results suggest that some spread of cultivars occurred from East to West and that hazelnut cultivation was not introduced from the eastern Mediterranean basin into Spain and southern Italy by Greeks or Arabs. Moreover, the results suggest considerable exchange of germplasm between Italy and Spain, probably by the Romans. Hazelnut appears to have been domesticated independently in three areas: the Mediterranean, Turkey, and Iran.
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Characterization and evaluation of microsatellite loci in European hazelnut (Corylus avellana L.) and their transferability to other Corylus species
Molecular Ecology Notes, 2005Co-Authors: Paolo Boccacci, Shawn A. Mehlenbacher, Nahla V. Bassil, Aziz Akkak, Roberto BottaAbstract:In this work, 18 microsatellite loci were developed in the European hazelnut ( Corylus avellana L.) using three enriched genomic libraries. They were evaluated on a set of 20 accessions of this species on the basis of number of alleles (mean: 7.1), expected heterozygosity (mean: 0.67), power of discrimination (mean: 0.77) and polymorphism information content (mean: 0.64). Cross-species transferability was evaluated using seven other Corylus species. All primer pairs amplified in all species, except for CaT-C505 in Corylus ferox and CaT-A114 in Corylus californica .
Mehmet Koyuncu - One of the best experts on this subject based on the ideXlab platform.
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CHANGE OF FAT CONTENT AND FATTY ACID COMPOSITION OF TURKISH HAZELNUTS (Corylus avellana L.) DURING STORAGE
Journal of Food Quality, 2004Co-Authors: Mehmet KoyuncuAbstract:Hazelnuts (Corylus avellana L.) were collected from three different cultivars (Tombul, Palaz and Kalinkara) at the harvest season of 1996. The dried nuts were stored shelled and unshelled in polyethylene bags at 21C and 60-65% relative humidity for 12 months. During storage, the total fat content increased, the palmitic and oleic acid content of the oil increased, linoleic acid, ranged from 12.41 to 10.35%. No significant differences were found for other fatty acids during storage. The effect of storage of shelled and unshelled hazelnuts on the total fat content was significant.
