Plant growth-promoting and rhizosphere-competent Acinetobacter rhizosphaerae strain BIHB 723 from the cold deserts of the Himalayas.
A phosphate-solubilizing bacterial strain BIHB 723 isolated from the rhizosphere of Hippophae rhamnoides was identified as Acinetobacter rhizosphaerae on the basis of phenotypic characteristics, carbon source utilization pattern, fatty acid methyl esters analysis, and 16S rRNA gene sequence. The strain exhibited the plant growth-promoting attributes of inorganic and organic phosphate solubilization, auxin production, 1-aminocyclopropane-1-carboxylate deaminase activity, ammonia generation, and siderophore production. A significant increase in the growth of pea, chickpea, maize, and barley was recorded for inoculations under controlled conditions. Field testing with the pea also showed a significant increment in plant growth and yield. The rifampicin mutant of the bacterial strain effectively colonized the pea rhizosphere without adversely affecting the resident microbial populations.
Gulati
Arvind
A
Plant Pathology and Microbiology Laboratory, Hill Area Tea Sciences, Institute of Himalayan Bioresource Technology, Palampur, India. gal_arvind@yahoo.co.in
Vyas
Pratibha
P
Rahi
Praveen
P
Kasana
Ramesh Chand
RC
D000150:Acinetobacter / Q000145:classification / Q000302:isolation & purification / Q000502:physiology*; D000641:Ammonia / Q000378:metabolism; D019755:Carbon-Carbon Lyases / Q000378:metabolism; D003080:Cold Temperature; D051639:Gardening / Q000379:methods; D031281:Hippophae / Q000254:growth & development* / Q000382:microbiology*; D007194:India; D007210:Indoleacetic Acids / Q000378:metabolism; D010710:Phosphates / Q000378:metabolism; D010802:Phylogeny; D018517:Plant Roots / Q000254:growth & development / Q000382:microbiology; D017262:Siderophores / Q000096:biosynthesis; D012988:Soil Microbiology
D007210:Indoleacetic Acids; D010710:Phosphates; D017262:Siderophores; D000641:Ammonia; C033634:1-aminocyclopropane-1-carboxylate deaminase; D019755:Carbon-Carbon Lyases