title: Quantitative assessment of the bacterial rhizosphere flora of Pinus contorta var. latifolia.
abstract: The bacterial flora associated with root systems of young and mature lodgepole pine was investigated by sampling forest-grown trees. Counts were performed and expressed on a surface-area basis to give a more realistic comparison of organism density or activity within the control soil, rhizosphere soil, and rhizoplane. On this basis, densities increased by an order of 10(4)- to 10(6)-fold from control soil to rhizoplane, with the degree of stimulation being inversely related to root radius.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D002452:Cell Count; D010944:Plants / Q000382:microbiology*; D011156:Population Density; D013306:Streptomycetaceae / Q000302:isolation & purification; D014197:Trees