Research Journal of Recent Sciences _________________________________________________ ISSN 2277-2502 Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 42 Study on Rhizosphericmicroflora of Wild and Transgenic varieties of Gossypium species in Monsoon Patel Twisha and Desai Pratibha B Shree Ramkrishna Institute of Computer Education and Applied Sciences, Veer Narmad South Gujarat University, Surat-395001, INDIA Available online at: www.isca.in, www.isca.me Received 4th July 2014, revised 28th August 2014, accepted 15th September 2014 AbstractMany, microorganisms playing an important role in plant growth are used in agriculture system, especially these group of microorganisms called plant growth promoting rhizobacteria (PGPR), which can increase the growth of plant directly and indirectly; acting as biofertilizers, phytostimulators and biocontrol agent. Various number of bacteria including species of Pseudomonas, Azotobacter, Klebsiella, Enterobacter, Alcaligenes, Proteus Bacillus, have observed to enhance plant growth. In present study, wild Gossypium species and transgenic Gossypiumhisrsutum sample were collected in monsoon season from four different sampling sites Rhizosphere, Rhizoplane, Endorhizosphere, Bulk soil from Agriculture farm, cotton research centre, Surat, Gujarat. A total Fifty nine bacteria were isolated and in vitro screening was done for different plant growth promoting activities; such as phosphate solubilization, zinc solubilization, Potassium solubilization, Nitrogen Fixation, ACC deaminaseacitivity, phytohormons production, HCN production, ammonia production, Lytic enzymes production, Triphenyltetrazolium tolerance (TTC) activity. In present work, eight bacterial isolates were positive for phosphate solubilization, two zinc solubilization and twenty four potassium solubilization. Nitrogen fixation activity was shown in twenty five isolates. ACC deaminase activity was shown in twenty five isolates. IAA production and Gibberelic acid shown nine and fifty six isolates respectively. Four isolates were positive for HCN production and thirty two for ammonia production. Lipase, protease and amylase enzyme activities were shown twenty three, twenty eight and twenty respectively. Twenty four isolates were tolerance to TTC. From all these traits, eight isolates were showing maximum plant growth promotion activities. As PGPR are environmental friendly and offer sustainable approach to increase production of crop and heath. So PGPR will restrict the use of chemical fertilizer in agriculture area.Keyword: PGPR, Rhizobacteria, biofertilizer. Introduction The growth human populations and fertilizers were used to increase crop production and meet the high demands for food sources. The production cost is increased, and the harmful nature of chemical fertilizers for the environment, which has led to a interest in the use of biofertilizers for enhanced environmental sustainability, lower the cost production and help in good crop yields. I had selected cotton plant because it has advantages like, on the basis of production India is second number due to its favorable weather condition as well as the every part of the cotton plant has its economic important. The rhizosphere zone has been defined as the volume of soil directly influenced by the presence of living plant roots or soil compartment influenced by the root. Rhizosphere supports very large, live and active microbial population capable of exerting beneficial, neutral and detrimental effects on the plants. Rhizobacteria, presence in rhizosphere zone that gave the beneficial and important effects on the plant growth by direct or indirect traits are called as plant growth promoting rhizobacteria (PGPR). These PGPR in the rhizosphere are very important for increasing health of host plantand fertility of soil. The activerhizobacteria (fungi and bacteria) improved growthof plant and crop productivity are generally known as Biofertilizer. These term PGPR was first gave by Kloepper and Schrothfor the microorganisms closely interact in the rhizospherezone. The rhizosphere zone is a great important for microbial interactions released by plant roots which are the main food source for rhizobacteria and geochemical cycling of nutrients.So Isolation, Identification, Screening and selection of rhizobacteriaand their used in various integrated practices have great application for enhancing the growth of crop and higher agricultural crops yield with maintaining of agro-ecosystems. Rhizobacteria have been reported to direct traits of enhance plant growth by a various mechanisms: Phosphate, potassium, zinc solubilization Nitrogen fixation and plant growth promoting hormones synthesissuch as IAA (Indole-3- acetic acid, GA (gibberellic acid). Indirect mechanisms involves elimination of harmful microbes, via antibiotics production, lytic enzymes production (Protease, lipase, amylase ), hydrogen cyanide, catalase. Biofertilizers, PGPR enhance the plant growth, their productivity, yield and increase the various nutrient of the host plant which are replace and altered the chemical fertilizers. So increases in yields of crop have been reported by PGPR. So, keeping all these in view, the present study was carried out to Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 43 isolate the various plant growth promoting strains from the rhizospheric soils of Gossypium sp. Material and Methods Collection of sample: Rhizopheric soil sample were collected from Rhizosphere of cotton plant growing at different site of Agriculture farm, Cotton research centre, Surat in monsoon season. Intact root system was dug out and rhizospheric soil sample were carefully taken in sterile plastic bags and store 4C.Total 5 soil samples were collected for isolation of rhizophericmicroflora. Isolation of Rhizopheric microflora: The rhizopheric microflorawere isolated from the Bulk soil, Rhizosphere (loosely attach to soil), Rhizoplane (surface bacteria with root adhesion capacity), Endorhizosphere ( portions of the cortex and endodermis) samples by serial dilution technique. Inoculate all the sample on the selective media Pikovskaya agar, Nitrogen free media, Ashbys Mannitol agar, Kings media, Bacillus media, Yeast Extract Mannitol Agar. Plates were incubated at room temperature until visible growth observed. All the isolates were colonical characteristics and morphological characterized for Gram reaction and Motility. Screening of Plant growth promoting traits (PGP) of Rhizobacteria (PGPR) Direct mechanisms Phosphate solubilization: The bacteria were screened for solubilization of phosphate as per methodology described by Gupta S. et.al. On Pikovskaya agar with insoluble tricalcium phosphate (TCP), a loop full of each culture was put on the agar plates and incubated at 300.1 C for 5 days. The solubilization zone was observed. Potassium solubilisation: Bacterial isolates were screened for the potassium solubilization ability using spot test method on modified Aleksandrov mediumplates containing either mica powder (A) or KHPO (B). A loopful of culture growth of different bacterial isolates was spotted medium plates and observations were taken after 3-4 days of growth. Zinc solubilisation: The bacterialisolates were inoculated into Pikovskaya modified medium which contain 0.1% insoluble zinc compounds (ZnO, ZnCO and ZnS). The bacteria were inoculated and incubated at 28C for 46- 48 hours. The clearing zones around colonies were measured. Nitrogen fixation: Bacteria was inoculated in NFb mediumwith or without addition of NHCl as a nitrogen source in plate . The Plates were incubated at 28C - 30C for 6-7 days, and growth of bacteria was appeare as identified as Fixation of nitrogen10. ACC deaminase activity: The activity of ACC deaminasewas described by Glick et al 11l of bacterial culture was inoculated into two agar plates of NFb or NFb-ACC modified (1-aminocyclopropane-1- carboxylate) as nitrogen source. These Plates were incubated at 28C- 30C and observed every day forgrowth formation in 4-7 days. Bacteria were re-inoculated. Again these plate were incubated in the same condition. Newly bacterial colonies observed in NFb-ACC modified medium were identified positive for ACC deaminase activity11. Phytohormons production: IAA (Indole-3-acetic acid) production 500 l of 24 h old rhizobacterial cultures were inoculated in 50 ml of Nutrient broth with 0.1% DL-tryptophan. Incubated in the cold incubator Shaker with 180 rpm for 48 h in dark. The cultures of bacteria were centrifuged at 10,000 rpm for 10 min in 4C - 5C. IAA was Quantified in the supernatants which done using colorimetric assay12. Gibberellic acid production: The gibberellic acid production method by agriculturally beneficial microorganisms was identified by Borrow et.al13 A quantity of 100 ml of nutrient broth were prepared for isolates and sterilized. 1 ml broth of isolates were added in medium Incubate it at 37C for 7-8 days. After 7 days, the culture was centrifuged at 8000 g for 10-15 mins to remove bacterial cells. 15 ml of the culture was pipetted out separately into the test tubes and two ml of zinc acetate solution was added. After 2 mins, 2 ml potassium ferrocyanide solution was added and centrifuged at 8,000 g for 10 mins. 5 mlsupernatant was added to 5 ml of 30% hydrochloric acid These mixture was incubated at 25C for 75 min. The blank was prepared with 5% hydrochloric acid. Absorbance was measured at 254 nm in UV-VIS spectrophotometer. From the standard graph prepared by using gibberellic acid solution of known quantities, the amount of GA produced by by the culture was calculated. Indirect mechanisms: HCN (hydrogen cyanide) ProductionScreening of Rhizobacteria for HCN production was done as per methodology Castric. Rhizbacterial culture were inoculated on nutrient agar medium with 4.4 g/l of glycine. A Whatman filter paper No. 1 soaked in 0.5% picric acid solution was placed inside the lid of a plate. Plates were sealed with parafilm Incubated it at 28-300.1 C for 4-6 days. So the development of light brown to dark browncolor indicated hydrogen cyanide production14. Production of NH: Isolates were tested for the production of ammonia in peptone water. Bacterial cultures were inoculated in 10 ml peptone water. Incubated it for 48-72 h at 28-30 2C. In each tube added Nessler's reagent (0.5 ml).So development of brown colour to yellow was a positive test for production ammonia15. Protease production: For protease production rhizo bacteria was isolated by Smibert and Kreig methodology. Protease production was determine using Skimed milk agar. Bacterial Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 44 cell was spot, inoculated and incubated for 2 days at 282 C. The clearing zones around the colonies were observed. Lipase production: Screening of rhizobacteriafor protease production was done by Egamberdiyeva and Holfich. Lipase production was determine using tributyreneagar. Bacterial cell was spot, inoculated and incubated for 2 days at 282 C. The clearing zones around the colonies were observed. Cellulase production: Screening of bacterial isolates for protease production was done as per methodology Cattelan A. J et al. Cellulase production was determine using carboxyl methyl cellulose agar. Bacterial cell was inoculated and incubated for 2 days at 282 C. The clearing zones around the colonies were observed. Amylase production: Screening of bacterial isolates for protease production was done as per methodology Smibert and Kreig. Amylase production was determine using starch agar. Bacterial cell was inoculated and incubated for 2 days at 282 C. The clearing zones around the colonies were observed. Triphenyl Tetrazolium Tolerance (TTC): Bacterial isolates were tested for the TTC tolerance in triphenytetrazolium chloride agar. Baterial culture was spot and incubated for 3 days. The pink color colonies were observed16. Results and Discussion The rhizopheric soils of cotton plants have more rhizobacetriadue to availibity of more nutrients, macronutrients and micronutrient. Rhizobacteria have beneficial effect on plant growth and yield of crop plant by direct and indirect mechanism. 59bacterial isolates were isolated from the four different site Bulk soil, rhizosphere, rhizoplane, endorhizosphere of wild and transgenic cotton fromcotton research centre, Surat. List of rhizobacteria isolate from different selective media. From Pikovskayas medium 11, Nitrogen Free media 10, Ashbys Mannitol Agar 8, Kings Medium 12, Bacillus Medium 7, Yeast Extract Mannitol Agar11 were isolated. Cell morphology gram stain showed that 10.1 % Gram positive and 89.83 % Gram negative and 76.27% motile and 23.72% nonmotile organisms. All isolates has shown significant PGPR activity. All the isolates PGPR activity were designated as shown in table-1. In present study, beneficial bacteria were isolated from rhizosphere. Isolated bacteria were screened for different plant growth promotion activities. Toenhance crop yields, nitrogenous and phosphatic fertilizers are applied at high rates which cause environmental and economic problems. A total of 8 bacterial isolates were screened for phosphate solublization on modified PVK agar. 24 were screened for the potassium solubilization ability using spot test method on modified Aleksandrov medium plates. Only 1strains could form clearing zone for zinc solubilizing ability. 25 isolates showed nitrogen-fixation activity. ACC deaminase activity was shown in 25 isolates. IAA is one of the most important phytohormone and function as important signal molecule in the regulation of plant development. Bacterial isolates were screened for plant hormone IAA and GA. Mostof the bacterial isolates produced plant growth promoting hormoneIAA. The range of IAA production was 0.001- 0.364 g/ml. Among all isolates, NFM/BT1/BS/7produced high IAA (0.364g/ml).56 isolates were positive for of GA range of 0.001- 0.373 g/ml. KM/W/RH/7 produced high GA3 (0.373 g/ml).Another trait of PGPR is the ammonia production. 32 isolates efficient isolateswere able to produced ammonia. HCN production by rhizobacteria has been important for in the biological control of pathogens. Production of HCN was detected in4isolates, which acts as an inducer of plant resistance. Protease, lipase, amylase activity was detected in most of the bacterial isolates that may be potentially very advantageous. 24 isolates were tolerance to TTC. In the present study total fourteen plant growth promoting traits were checked. The frequency of different positive test were checked. Total 8 isolates were showed phosphate solubilization activity, 2 isolates showed zinc solubilization, 24 potassium solubilization, 25 nitrogen fixation, 25 ACC deaminase activity, 56 gibberellic acid, 9 IAA production, 4 HCN production, 32 ammonia production, 28, 20, 23 respectivily for lipase, protease, amylase production and 24 were showed TTC tolerance activity. From Fifty nine,7 isolates have more than 8 positive PGP traits. Table1 Bacterial isolates showing different plant growth promotion activities Sr No Colony Code PGPR traits PSB KSB ZSB NFb ACC IAA GA HCN AMP TBA SMA SA CMC TTC Total 1 PM/W/BS/1 - - - - - - - - - - +- + + - - 2 PM/W/RH/1 PM/BT1/BS/1 PM/BT1/RH/1 Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 45 2 PM/W/BS/2 - - - - - - - - - - + - - - 1 PM/BT2/BS/2 PM/BT2/RH/2 3 PM/W/BS/3 - - - - - - - - + - + - - - 2 PM/W/RP/3 PM/W/ER/3 PM/BT1/BS/3 PM/BT1/RH/3 4 PM/W/RH/4 + - - + + 0.132 0.372 - + - - - - + 7 5 PM/W/RP/5 - - - - - - 0.001 - - - + - - - 2 PM/W/ER/5 6 PM/W/RP/6 - - - - - - 0.325 - - - - + - - 2 PM/W/ER/6 PM/BT1/RH/6 7 PM/BT1/BS/7 +++ ++ - + + - 0.329 - + - + - - + 8 PM/BT1/RP/7 PM/BT1/ER/7 8 PM/BT1/BS/8 0.079 0.330 + 3 9 PM/BT1/BS/9 - - - - - - 0.228 - - - - - - + 2 PM/BT1/RH/9 PM/BT1/RP/9 PM/BT1/ER/9 10 PM/BT1/RP/10 - - - + - 0.072 0.002 - - - + - - - 4 11 PM/BT1/RH/11 _- - - - - - - - - - - + - - 1 12 NFM/W/BS/1 _- - - - + - 0.289 - - + - - - - 4 13 NFM/W/BS/2 - - - + + - 0.323 - + - - + - + 9 NFM/W/RH/2 NFM/BT1/RH/2 NFM/BT1/RP/2 14 NFM/W/RH/3 - ++ - + + - 0.325 - - - - - - + 5 NFM/W/RP/3 15 NFM/W/RH/4 - - - + + - 0.319 - + - - - - + 5 NFM/W/RP/4 NFM/BT1/RH/4 16 NFM/W/RP/5 - - - + + 0.038 0.230 - - + - + - - 6 NFM/W/ER/5 17 NFM/BT1/BS/6 - - - - - - 0.321 - - + + - - - 3 NFM/BT1/RP/6 NFM/BT1/ER/6 18 NFM/BT1/BS/7 - - - - - - 0.364 - + + - - - - 3 19 NFM/BT1/BS/8 - - - - - - 0.245 - + - + - - - 3 NFM/BT1/RP/8 NFM/BT1/ER/8 20 NFM/BT1/RH/9 - - - + + 0.090 - - + - - - - - 4 NFM/BT1/RP/9 21 NFM/BT1/RP/10 - - - - - - 0.321 - + - - - - - 2 NFM/BT1/ER/10 22 AMA/W/BS/1 - - - - - - 0.326 - + - - - - - 3 AMA/W/RH/1 23 AMA/W/BS/2 - - - - - - 0.327 - + - - + - + 8 AMA/W/RH/2 Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 46 AMA/W/RP/2 24 AMA/W/RH/3 ++ - - - - - 0.325 - - + + - - + 6 AMA/W/RP/3 AMA/W/ER/3 25 AMA/W/RH/4 - - - - - - 0.321 - - - - + - - 2 AMA/W/ER/4 AMA/BT1/RH/4 26 AMA/BT1/BS/5 - - - - - - - + + - + - - - 3 AMA/BT1/RH/5 AMA/BT1/RP/5 27 AMA/BT1/BS/6 +++ - - + + - 0.320 - - + + - - + 7 AMA/BT1/RP/6 28 AMA/BT1/RP/7 +++ - - + + - 0.329 - + - - - - + 6 AMA/BT1/ER/7 29 AMA/BT1/RH/8 - - - - - - 0.324 - + - - - - - 2 AMA/BT1/ER/8 30 KM/W/BS/1 - - - - - - 0.369 - + - - - - + 4 KM/W/RH/1 31 KM/W/BS/2 - - - - - - 0.324 - + - - - - - - KM/BT1/BS/2 32 KM/W/BS/3 - ++ - - - - 0.333 - + + + - - - 5 KM/W/RH/3 KM/W/RP/3 33 KM/W/BS/4 - - - + + - 0.372 + - + + + - - 8 KM/W/RH/4 KM/W/RP/4 KM/W/ER/4 34 KM/W/RH/5 - +++ - + + - 0.361 - + + +++ + - + 9 35 KM/W/RH/6 - ++ - - - - 0.334 - - + - - - - 3 KM/W/RP/6 36 KM/W/RH/7 - - - - - 0.373 - + + + + - - 8 37 KM/W/RP/8 - - - + + - 0.343 - + + +++ - - - 6 KM/W/ER/8 38 KM/BT1/BS/9 - - - - - 0.317 0.373 - + + + - - - 5 KM/BT1/RH/9 KM/BT1/RP/9 39 KM/BT1/BS/10 - - - - - - - - - ++ + + - - 4 40 KM/BT1/BS/11 - - - + - - - - + - - + - - 3 KM/BT1/RH/11 KM/BT1/RP/11 41 KM/BT1/RP/12 - - - - - - 0.336 - + - - - - - 3 KM/BT1/ER/12 42 BM/W/BS/1 - - - - - - - - - - - + - - 1 BM/W/RH/1 BM/W/RP/1 BM/W/ER/1 43 BM/W/RH/2 - +++ - - - - 0.332 - - - - + - + 4 BM/W/RP/2 BM/W/ER/2 BM/BT2/BS/2 BM/BT2/RH/2 Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 47 44 BM/W/BS/3 - ++ - + + - 0.364 + - + + + - + 9 BM/W/RH/3 BM/W/RP/3 BM/BT1/RP/3 BM/BT1/ER/3 45 BM/BT1/BS/4 - - - - - - 0.342 - + + - - - + 4 BM/BT1/RH/4 BM/BT1/ER/4 46 BM/BT1/RH/5 - - - - - 0.083 0.336 - + + - - - - 4 BM/BT2/RP/5 BM/BT2/ER/5 47 BM/BT2/BS/6 - - - - - - 0.362 - - + + + - - 4 BM/BT2/RH/6 BM/BT2/RP/6 48 BM/BT2/RH/7 - ++ - + + - - - + + + + - - 7 BM/BT2/RP/7 49 YMA/W/BS/1 - +++ - + + - 0.334 - - - + + - + 7 YMA/W/RH/1 YAM/W/ER/1 YAM/BT1/RH/1 50 YMA/W/BS/2 - +++ - + + - 0.321 - - - + - - + 6 YMA/BT1/BS/2 YAM/BT1/RH/2 YAM/BT1/RP/2 51 YMA/W/BS/3 - ++ - + + - 0.370 - + - + - - + 7 52 YMA/W/RH/4 - +++ - + + - - - + + + - - + 7 53 YMA/W/RH/5 + +++ - - - - 0.320 - - + - - - + 5 YMA/W/RP/5 54 YMA/W/RH/6 - ++ - + + - 0.321 - + - + + - + 8 YMA/W/RP/6 YMA/W/ER/6 YMA/BT1/BS/6 55 YMA/W/RP/7 - ++ - - - - 0.331 - + - - - - - 3 YMA/W/ER/7 YMA/BT1/BS/7 YMA/BT1/RP/7 56 YMA/BT1/BS/8 - ++ - - - - 0.324 - + - + - - - 4 57 YMA/BT1/RH/9 - ++ - + + - 0.324 - - - - - - - 4 58 YMA/BT1/RH/10 - ++ - - - - 0.325 + + + - - - + 6 YMA/BT1/ER/10 59 YMA/BT1/RP/11 - +++ - + + - 0.319 - - + + + - + 8 YMA/BT1/ER/11 Key: PM- Pikovskayas Media, NFM- Nitrogen Free Medium, AMA- Ashbys Mannitol Agar, KM- Kings Medium, BM- Bacillus Medium, YMA-Yeast Extract Mannitol, W-Wild Cotton, BT1-Transgenic (Bt-1) Cotton (Gossypiumhisrsutum), BS Bulk Soil, RH Rhizosphere, RP Rhizoplane, ER Endorhizoshere, PSB Phosphate solubilizing Bacteria, KSB Potassium Solubilizing Bacteria, ZSB Zink Solubilizing Bacteria, NFb Nitrogen fixation, ACC ACC deaminase activity, IAA Indole-3-acetic acid((g/ml), GA - Gibberellic Acid(g/ml), HCN - Hydrogen cyanide production, AMM Ammonia Production, TBA Lipase Acitiviy, SMA Protease Activity, SA Amylase Activity, CMC Cellulase Activity, TTC TriphenylTetrazolium tolerance Activity. Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 48 Figure1 Wild cotton and transgenic cotton Figure2 Sampling site for Rhizobacteria Wild Cotton TransgenicCotton Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. 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ict;&#xor 1; /C;&#xolum;&#xns 1;' /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1;' /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1;# /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1;# /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1; /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1; /; olo;&#xrs 3; "{G DQ-ڦF9$G.45Ǟ ֞&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1; /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1; /; olo;&#xrs 3;?ZR徵QeYHSU`nIj"?ZR徵QeYHSU`nIj"&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1; /; olo;&#xrs 3;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 1; /; olo;&#xrs 3;?ZR徵QeYHSU`nIj"&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 9; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 9; /C;&#xolor;&#xs 30;?ZR徵QeYHSU`nIj"&#x_.;&#xϯ׷;&#xW;&#xL0;&#x_.;&#xϯ׷;&#xW;&#xL0;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 9; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 9; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 8; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 8; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 8; /C;&#xolor;&#xs 30;Ho[Z+kamyX&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 7; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 7; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 7; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 7; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 7; /C;&#xolor;&#xs 30;vt]׶kw$}lXr&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 6; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 6; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 5; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 5; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 4; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 4; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 2; /C;&#xolor;&#xs 30;&#x/Pre; ict;&#xor 1; /C;&#xolum;&#xns 2; /C;&#xolor;&#xs 30; Lipase producer TTC tolerance Protease Producer Nitrogen fixation IAA Production Ammonia production Figure3 Isolates and their PGP traits Possitive Test Control Possitive Test Control Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 50 Figure4 Comparative study of total positive traits in PGPR Conclusion The search for PGPR and their investigation of their mode of action are increasing at a rapid used as commercial Biofertilizer. Thus, the future of this technology looks extremely bright. Acknowledgement This work was supported by the Department of Microbiology, Shree Ramkrishna Institute of Computer Education and Applied Sciences, Surat in Gujarat, India. References 1.Juanda J.I.H., Screening of soil bacteria for Plant Growth Promoting Activities in Vitro., J. Agri. Sci.,4, 27-31(2005)2.Khan M.S., Screening of free-living rhizospheric bacteria for their multiple plant growth promoting activities, 163,173-181 (2006)3.Kloepper J.W. and Schroth M.N., Plant growth-promoting rhizobacteria on radishes, Proc. 4th Int. Conf. on Plant Pathogenic Bacteria, Station de Pathologie Vegetale et Phytobacteriologie, INRA, Angers, France, 2, 879-882 (1978)4.Chen X., Liu M., Hu F., Mao X. and Li H., Contributions of soil micro-fauna (protozoa and nematodes) to rhizosphere ecological functions, Acta. Ecol. Sin., 27(8),3132-3143 (2007)5.Nelson L.M., Plant growth promoting rhizobacteria (PGPR): Prospect for new inoculants on functional bacterial populations in rhizosphere soil, World J Microbiol Biotechnol,25, 357366 (2004)6.Vessey J.K., Plant growth promoting rhizobacteria as biofertilizers, Plant Soil, 255: 571-586, 16(3), 295298.3 (2003)7.Salamone I.E.G., Direct beneficial effects of cytokinin producing rhizobacteria on plant growth., University of Saskatchewan, Saskatoon, SK, Canada, 128 (2000)8.Gupta R.S., S. Rekha, Aparna and R.C. Kuhad, A modified plate assay for screening phosphate solubilizing microorganisms, J. Gen. Appl. Microbiol.,40, 255260 (1994)9.Hu X.F., Chen J. and Guo J.F., Two phosphate and potassium solubilizing bacteria isolated from Tiannu mountain, Zhejiang, China, World Journal of Microbiology and Biotechnology,22, 983-990 (2006)10. Dbereiner J., Baldani V. and Baldani J., Como isolar e identificarbactriasdiazotrficas de plantasno-leguminosas, Brasilia: EMBRAPA-SPI: Itagu: EMBRAPA-CNPAB 19-25 (1995) 11.Glick B., Karaturovc D. and Newell P., A novel procedure for rapid isolation of plant growth-promoting rhizobacteria, Can J Microbiol,41, 533536 (1995) 12.Loper J.E. and M.N. Schroth, Influence of bacterial sources of indole-2-acetic acid on root elongation of sugar beet, Phytopath, 76, 386-389 (1986)13.Borrow A., P.W. Brain, U.E. Chester, P.J. Curtis, H.G. Hemming, E.C. Jeffereys, R.B. Lloyd, I.S. Nixon, G.L.F. Norris and N. Radley, Gibberellic acids a metabolic product of the fungus Gibberellafujikuroisome No of Positive traits Research Journal of Recent Sciences ______________________________________________________________ ISSN 2277-2502Vol. 3(IVC-2014), 42-51 (2014) Res. J. Recent. Sci. International Science Congress Association 51 observations on its production and isolation, J. Sci. Food. Agric.,6, 340-348 (1995) 14.Castric P.A., Hydrogen cyanide, a secondary metabolite of Psuedomonasaeruginosa, Can. J. Microbiol,21, 613-618 1975)15.Cappuccino J.C. and Sherman N., In: Microbilogy, A laboratory manual, third ed. Benjamin/ Cummings Pub.Co., New York, 125-179 (1992)16.Jarrell K.F. and M.J. McBride, The surprisingly diverse ways that prokaryotes move, Nature reviews, Microbiology, 6, 466476 (2008)