[Boot colonization of wheat by lux-AB genes marked Pseudomonas fluorescens Xl6L2]

Colonization density of Pseudomonas fluorescens Xl6L2 marked with luxAB genes in wheat rhizosphere in asepsis rhizobox-Calcareous chao soil microcosms reached the maximum(4.60 log cfu.g-1 root) 3 days after seeds coated with Pf.Xl6L2 sown, then declined to a relatively stable lower level(2.45 log cfu.g-1 root) in 0-2 cm root segment. Dynamics of colonization of Pf.Xl6L2 in wheat rhizosphere under field conditions was the same as in microcosms, Pf.Xl6L2 could move to the place of 10 cm of root from seeds under field conditions, distance of horizontal movement of Pf.Xl6L2 in field soil was not over 40 cm during 125 days of plant growth.