The aim of the presented work was to study the effects of changes of endogenous indole-3-acetic acid (IAA) metabolizm on in vitro shoot proliferation and rhizogenesis of transgenic strawberry shoots carrying maize IAA-glucose synthase gene (iaglu). Four iaglu-transformed strawberry clones and nontransformed 'Kaster' shoots served as a plant material for the study. The analysis of free and conjugated IAA level in leaves of transgenic and control strawberry plants showed that iaglu-containing strawberry clones had significantly higher level of ester conjugated IAA, but the level of free hormone was only slightly decreased or comparable to the control plants. iaglu-transformed clones had significantly higher proliferation rate and formed more roots than the control shoots. One of the iaglu-transformed clones had significantly shorter and other two ? longer roots than the control plantlets.