Apple (Malus domestica) transgenic T1 was obtained by Agrobacterium tumefaciens- mediated transformation of Mailing 26 rootstock using the plasmid binary vector pLDB 15. pLDB 15 contains within its T-DNA a gene encoding the lytic protein attacin E. The integration of the attacin E gene into the apple genome was confirmed by Southern analysis. Northern analysis indicated the presence of an attacin E mRNA in plants inoculated with Erwinia amylovora. After inoculation of in vitro grown plants of T1, Mailing 26, and Mailing 7 (resistant control) with E. amylovora, the log10 of the inoculum concentration lethal to 50% of the plants was 5.4, 4.4, and 5.6, respectively. In greenhouse trials for resistance to fire blight, T1 was significantly more resistant than‘Mailing 26’.
CITATION STYLE
Norelli, J. L., Aldwinckle, H. S., Destéfano-Beltrán, L., & Jaynes, J. M. (1994). Transgenic ‘Malling 26’ apple expressing the attacin E gene has increased resistance to Erwinia amylovora (pp. 333–338). https://doi.org/10.1007/978-94-011-0467-8_67
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