Abstract:
The Plant Growth Promoting Rhizobacteria (PGPR) organisms provide protection to plants against diseases by suppressing deleterious and pathogenic microorganisms producing of hormones, hydrogen cyanide (HCN), various beneficial volatile compounds, siderophores, bacteriocins
etc and also act as a bio fertilizer like P solublization, N fixation, IAA production etc…,
present research mainly concentrated on exploration of
Pseudomonas fluorescens and
Bacillus PGP activities like SA, IAA, β 1, 3 glucanase production and P solublization.
Around fifty one isolates of
Pseudomonas fluorescens and ten
Bacillus subtilis isolates were isolated from the rhizosphere soil
of
Aloe vera, among fifty one
Pseudomonas, Pf 32 and followed by Pf 45 produced maximum quantity of salicylic acid (SA), Pf 45 recorded maximum indole acetic acid (IAA) production. The isolate Pf 32 solubilized high phosphorous in the sperber’s hydroxyl apatite medium and higher amount of β 1, 3 glucanase production.