§ 725.239 Use of specific microorganisms in activities conducted outside a structure.

(a) Bradyrhizobium japonicum. To qualify for an exemption under this section, all of the following conditions must be met for a test involving Bradyrhizobium japonicum:

(1) Characteristics of recipient microorganism. The recipient microorganism is limited to strains of Bradyrhizobium japonicum.

(2) Modification of traits. (i) The introduced genetic material must meet the criteria for poorly mobilizable listed in § 725.421(c).

(ii) The introduced genetic material must consist only of the following components:

(A) The structural gene(s) of interest, which have the following limitations:

(1) For structural genes encoding marker sequences, the gene is limited to the aadH gene, which confers resistance to the antibiotics streptomycin and spectinomycin.