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Nat Protoc. 2007;2(4):948-52.

Agrobacterium rhizogenes-mediated transformation of soybean to study root biology.

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  • 1ARC Centre of Excellence for Integrative Legume Research, The University of Queensland, St Lucia, Queensland 4072, Australia.


This protocol is used to induce transgenic roots on soybean to study the function of genes required in biological processes of the root. Young seedlings with unfolded cotyledons are infected at the cotyledonary node and/or hypocotyl with Agrobacterium rhizogenes carrying the gene construct to be tested and the infection sites are kept in an environment of high humidity. When the emerged hairy roots can support the plants, the main roots are removed and the transgenic roots can be tested. Using this method, almost 100% of the infected plants form hairy roots within 1 month from the start of the experiments.

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