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Plant growth promoting
activities of fluorescent pseudomonads associated with some
crop plants
A. Suresh, P. Pallavi, P. Srinivas, V. Praveen Kumar, S.
Jeevan Chandra and S. Ram Reddy*
Department of Microbiology, Kakatiya University, Warangal-
506009 (A.P), India.
*Corresponding author. E-mail:
sanditi_ramreddy@yahoo.com.
Accepted 13 July, 2010 |
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Fluorescent pseudomonads (FP), a major component of
rhizobacteria, promote the plant growth through their
multifarious activities. In the present investigations, 10
strains of fluorescent pseudomonads isolated from the
rhizosphere soils of bajra (Pennisetum glaucum),
jowar (Sorghum vulgare), rice (Oryza sativa)
and maize (Zea mays) were screened for their plant
growth promoting activity based on their ability to produce
hydrogen cyanide (HCN), siderophores, proteases, indole
acetic acid (IAA), broad spectrum antifungal activity
against pathogenic fungi and phosphate solubilization. The
results indicated that most of the isolates tested possess
plant growth promoting traits. These isolates can be used as
potential biofertilizers and also as biocontrol agents.
Key words: PGPR, indole acetic acid,
hydrogen cyanide, protease, phosphate solubilization,
antagonism. |
