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Name the cell wall degrading enzyme in tomato and name the transgenic plant in which expression of this gene is blocked.

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Cell wall degrading enzyme in tomato is polygalacturonase. Flavr savr is the transgenic tomato plant in which the expression of a gene has been blocked. The transgenic tomato produces much less cell wall degrading enzyme, polygalacturonase. The non-availability of this enzyme prevents over-ripening. Thus fruit remains fresh for a longer period than the fruit of normal tomato variety.