title: Integrated approach for disease management and growth enhancement of Sesamum indicum L. utilizing Azotobacter                      chroococcum TRA2 and chemical fertilizer.
abstract: Azotobacter                         chroococcum TRA2, an isolate of wheat rhizosphere displayed plant growth promoting attributes including indole acetic acid, HCN, siderophore production, solubilization of inorganic phosphate and fixation of atmospheric nitrogen. In addition, it showed strong antagonistic effect against Macrophomina phaseolina and Fusarium oxysporum. It also caused degradation and digestion of cell wall components, resulting in hyphal perforations, empty cell (halo) formation, shrinking and lysis of fungal mycelia along with significant degeneration of conidia. Fertilizer adaptive variant strain of A. chroococcum TRA2 was studied with Tn5 induced streptomycin resistant transconjugants of wild type tetracycline-resistant TRA2 (designated TRA2(tetra+strep+)) after different durations. The strain was significantly competent in rhizosphere, as its population increased by 15.29 % in rhizosphere of Sesamum indicum. Seed bacterization with the strain TRA2 resulted in significant increase in vegetative growth parameters and yield of sesame over the non-bacterized seeds. However, application of TRA2 with half dose of fertilizers showed sesame yield almost similar to that obtained by full dose treatment. Moreover, the oil yield increased by 24.20 %, while protein yield increased by 35.92 % in treatment receiving half dose of fertilizer along with TRA2 bacterized seeds, as compared to untreated control.
authors: Department of Botany and Microbiology, Gurukul Kangri University, Haridwar 249404, Uttar Pradesh, India.
authors: D K
authors: DK
authors: Maheshwari
authors: R C
authors: RC
authors: Dubey
authors: Abhinav
authors: A
authors: Aeron
authors: Bhavesh
authors: B
authors: Kumar
authors: Sandeep
authors: S
authors: Kumar
authors: Sakshi
authors: S
authors: Tewari
authors: Naveen Kumar
authors: NK
authors: Arora
mesh_terms: D000935:Antifungal Agents / Q000378:metabolism; D001395:Azotobacter / Q000254:growth & development* / Q000302:isolation & purification; D005308:Fertilizers; D005670:Fusarium / Q000187:drug effects / Q000254:growth & development / Q000472:pathogenicity; D054884:Host-Pathogen Interactions; D007210:Indoleacetic Acids / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D010710:Phosphates / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development / Q000382:microbiology; D058441:Rhizosphere; D012639:Seeds / Q000378:metabolism / Q000382:microbiology; D031685:Sesamum / Q000254:growth & development* / Q000382:microbiology*; D017262:Siderophores / Q000096:biosynthesis; D012988:Soil Microbiology; D013753:Tetracycline Resistance / Q000502:physiology; D014908:Triticum / Q000254:growth & development / Q000382:microbiology
chemical_list: D000935:Antifungal Agents; D005308:Fertilizers; D007210:Indoleacetic Acids; D010710:Phosphates; D017262:Siderophores; C030737:indoleacetic acid; D009584:Nitrogen