Coffee plant with alpha-d-galactosidase reduced activity.

A plant transgenic coffee containing a plant cell coffee, producing galactomannans, which cell has been modified by introducing into the cell a gene construct containing a nucleic acid that is transcribed to a ribonucleic acid, which is antisense mRNA, or a part thereof, derived from gene to-D-galactosidase, such that the endogenous level of activity is reduced to-galactosidase, so that the galactose branching of the galactomannans increases .