http://www.cnr.it/ontology/cnr/individuo/prodotto/ID102491
Analysis of transgenic Aster caucasicus calli expressing a beta-amyrin synthase (AsOXA1) gene (Abstract/Poster in atti di convegno)
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- Analysis of transgenic Aster caucasicus calli expressing a beta-amyrin synthase (AsOXA1) gene (Abstract/Poster in atti di convegno) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
Pecchia P., Cammareri M., Consiglio M.F., De Tommasi N. & Conicella C. (2009)
Analysis of transgenic Aster caucasicus calli expressing a beta-amyrin synthase (AsOXA1) gene
in 53° Convegno Annuale Societa Italiana Di Genetica Agraria, Torino, 16-19/9/2009
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- Pecchia P., Cammareri M., Consiglio M.F., De Tommasi N. & Conicella C. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
- 53° Convegno Annuale Societa Italiana di Genetica Agraria (SIGA) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
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- An extremely rich chemical diversity characterizes Aster species as well as the other genera of Asteraceae family. In particular, triterpenoid saponins and quinic acid derivates have been isolated in Aster spp. These compounds have an important role in vivo for their biological as well as pharmacological activities. Saponins are involved in defence mechanisms against insects, bacteria, fungi, nematodes and weeds. Furthermore, saponins have anticholesterolaemic, haemolytic, vaccine adjuvant, immunostimulatory, and anticarcinogenic properties. Quinic acid derivates are powerful antioxidants and antibiotics as well as inhibitors of HIV-1 replication. Their antioxidant activity is beneficial for human health by limiting atherosclerosis and carcinogenesis. In this study, we evaluated the effects of the ectopic expression of AsOXA1 cDNA isolated from Aster sedifolius on the production of triterpene saponins in A. caucasicus, a species that does not produce them and, conversely, is rich of quinic acids. AsOXA1 cDNA encodes beta-amyrin synthase, a key enzyme involved in triterpene saponin biosynthesis. Genetic transformation was set up in A. caucasicus and an expression vector useful for transformation by Agrobacterium was constructed with AsOXA1 under the control of the constitutive promoter CaMV35S. The five transgenic calli expressing AsOXA1 analyzed by HPLC-DAD and LC/MSn did not accumulate significant amounts of triterpenes and/or triterpene glycosides but, surprisingly, the production of quinic acid derivates was increased significantly as compared to untransformed callus. (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR-IGV, Università di Salerno (literal)
- Titolo
- Analysis of transgenic Aster caucasicus calli expressing a beta-amyrin synthase (AsOXA1) gene (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
- 978-88-900622-9-2 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autoriVolume
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