TABLE 4

Rootstock colonization rates by selected actinobacteria at 10 and 200 days after their application

Actinobacterium isolated by batch of plants% of isolated actinobacteria aftera:
10 days200 days
Control plants
    VV/E16.43 (9)4.29 (6)
    VV/E21.43 (2)0.71 (1)
    VV/E54.29 (6)2.14 (3)
    VV/R13.57 (5)ND (0)
    VV/R42.86 (4)3.57 (5)
    VV/R5ND (0)0.71 (1)
Treated plants
    VV/E136.43 (51)13.57 (19)
    VV/E227.14 (38)7.86 (11)
    VV/E516.43 (23)4.29 (6)
    VV/R130.00 (42)ND (0)
    VV/R420.71 (29)7.14 (10)
    VV/R511.43 (16)ND (0)
  • a ND, not detected. The percentage of each particular strain was calculated as the number of clones growing from wood chips and identified by sequencing of 16S rRNA against a number of 140 chips tested under each condition (7 chips isolated from two stubs per 10 plants analyzed). Values are the average of two independent experiments. Raw data (number of each particular actinobacterium isolated from 140 chips) are indicated in parentheses.