Figure 1: Streptomyces pactum Act12 colonies (a), powder form agent (b), the growth of perennial ryegrass plants in Pb-treated soil with or without Act12 inoculation (c) and the count of Streptomyces pactum Act12 after 60-d survival in Pb-treated rhizosphere soil with or without inoculation. (means ± SD, n = 3).