NDLI: Adventitious shoot organogenesis from leaf and petiole explants of European hazelnut

Content Provider	Springer Nature Link
Author	Silvestri, Cristian Cristofori, Valerio Ceccarelli, Marilena Caceres, Maria Eugenia Escribà Lacuesta, Josep Rugini, Eddo
Copyright Year	2016
Abstract	Adventitious shoot organogenesis and somatic embryogenesis are the basis for implementing new genetic variability and biotechnological approaches in woody species, particularly if mature tissues from valuable cultivars are used. To date, these technologies are only applied to few tree species due to the absence of efficient regeneration protocols. In hazelnut, adventitious shoot organogenesis and somatic embryogenesis have only been carried out with zygotic embryo tissues up to now. Here we report plant regeneration from explants of somatic origin by using in vitro rejuvenated mature tissues (leaves, petioles and stipules). A histological analysis carried out on calli grown on various media, showed significant evidence of shoot regeneration, as proved by the presence of vascular elements such as tracheids with annular or helical secondary wall thickening. Subsequently, the optimization of the regeneration protocol performed by pre-treating the explants with antibiotics (carbenicillin, vancomycin, and cefotaxime) as molecules with auxin-like effects enabled us to achieve shoot organogenesis in hazelnut. The organogenic competence strictly depended on the explants and antibiotics used in the experiments. Following an antibiotic pre-treatment of cv Tonda Gentile Romana explants in the proliferation stage, organogenic responses (frequencies of 40 %) were obtained. According to the results obtained, the best protocol for inducing shoot organogenesis in hazelnut should include the use of explants (leaves and petioles) conditioned in a double-liquid layer of cefotaxime 1000 mg L$^{−1}$ added to the proliferation medium, cultured on the induction medium, consisting in solid MS medium supplemented with 3 % sucrose, 6-benzylaminopurine 1 mg L$^{−1}$, indole-3-butyric acid 1 mg L$^{−1}$ and kinetin 2 mg L$^{−1}$, and then by sub-culturing the newly-formed calli to regeneration medium, consisting of half-strength solid MS medium with sucrose (30 g L$^{−1}$) and 6-benzylaminopurine (0.5 mg L$^{−1}$).
Starting Page	59
Ending Page	65
Page Count	7
File Format	PDF
ISSN	01676857
Journal	Plant Cell, Tissue and Organ Culture (PCTOC)
Volume Number	126
Issue Number	1
e-ISSN	15735044
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-03-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Corylus avellana L. Shoot regeneration Rejuvenation Histological analysis Antibiotics Plant Sciences Plant Physiology Plant Genetics & Genomics Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Horticulture

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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