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Journal of Experimental Botany, Vol. 52, No. 357, pp. 845-850, April 15, 2001
© 2001 Oxford University Press

A simple protocol for transient gene expression in ripe fleshy fruit mediated by Agrobacterium

Silvia Spolaore, Livio Trainotti and Giorgio Casadoro1

Dipartimento di Biologia, Università di Padova, Via G. Colombo 3, 35121 Padova, Italy

Fleshy fruits represent a very important economic resource and, therefore, they are an ideal target for biotechnological ameliorations. However, because of their physiological and anatomical characteristics, ripe fleshy fruits represent an extremely difficult material for transient gene expression assays aimed at the study of gene promoters in a short time. To this purpose, a fast and efficient Agrobacterium-mediated transient gene expression system was developed for ripe fleshy fruits. A ß-glucuronidase reporter gene interrupted by an intron was used in order to prevent the possible expression of GUS activity by the Agrobacterium cells. The contemporary use of another reporter gene was used to check the transformation efficiency. This method is based on the injection of an Agrobacterium suspension into the fruits, and allows both qualitative and quantitative assays in a wide range of fruits to be carried out.

Key words: Agrobacterium tumefaciens, ripe fleshy fruits, transient gene expression.


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