PCR profiling, using primers Bj110F and Bj110R, of strains isolated from the nodules of soybeans grown in a greenhouse in pots filled with soil taken from the field site in Gorzyń on 23 September 2010. The particular lanes of the gels contain the amplification products obtained with the template of DNA from B. japonicum, as follows: 1, UPP401; 2, UPP402; 3, UPP403; 4, UPP404; 5, UPP405; 6, UPP406; 7, UPP407; 8, UPP408; 9, UPP409; 10, UPP410; 11, UPP411; 12, UPP412; 13, UPP413; 14, UPP414; 15, UPP415; 16, UPP416; 17, UPP417; 18, UPP418; 19, UPP419; 20, UPP420; 21, UPP421; 22, UPP422; 23, UPP423; 24, UPP424; 25, UPP425; 26, UPP426; 27, UPP427; 28, UPP428; 29, UPP429; 30, UPP430; 31, UPP431; 32, UPP432; 33, UPP433; 34, UPP434; 35, UPP435; and 36, UPP436. Lane M, molecular markers (DirectLoad wide-range DNA marker; Sigma, St. Louis, MO).