EVALUATION OF PLANT GROWTH PROMOTING CHARACTERISTICS OF SOME STRAINS OF BACILLUS BACTERIA

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YOUNESI SARA; ASGHARZADEH AHMAD; DARVISH FAROKH

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON AGRICULTURAL ENGINEERING AND NATURAL RESOURCES
Year:2016 | Issue:2

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Title

EVALUATION OF PLANT GROWTH PROMOTING CHARACTERISTICS OF SOME STRAINS OF BACILLUS BACTERIA

Author(s)

YOUNESI SARA | ASGHARZADEH AHMAD | DARVISH FAROKH

Keywords

PGPR

BACILLUS

PHOSPHATE SOLUBILIZATION

AUXIN

ACC-DEAMINASE ENZYME

SIDEROPHORE

Abstract

PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) IS REFERRED TO A HETEROGENEOUS GROUP OF BENEFICIAL RHIZOSPHERE BACTERIA THAT COULD ENHANCE PLANT YIELD THROUGH ONE OR MORE MECHANISMS. IN THIS STUDY, SOME OF PLANT GROWTH PROMOTING CHARACTERISTICS SUCH AS SOLUBILIZING OF INSOLUBLE INORGANIC PHOSPHATE, AUXIN, ABILITY TO PRODUCTION OF ACC-DEAMINASE ENZYME AND SIDEROPHORE PRODUCTION WERE EVALUATED IN 10 STRAINS OF BACILLUS BACTERIA SELECTED FROM THE AVAILABLE BANK OF SOIL BIOLOGY DEPARTMENT OF SOIL AND WATER RESEARCH INSTITUTE. TO EVALUATE THE ABILITY OF SOLUBILIZING OF INSOLUBLE INORGANIC PHOSPHATE, SPERBER SOLID MEDIA WAS USED THAT SHOWED ONLY BACILLUS SUBTILIS4 HAS A POOR ABILITY IN THIS AREA. RESULT SHOWED THAT THESE STRAIN HAVE A POOR ABILITY TO PRODUCE AUXIN AND THE HIGHEST AMOUNT OF AUXIN WAS PRODUCED BY B. PUMILLUS (2.42 MG/ML). THE ABILITY OF STRAINS TO UTILIZE ACC WAS ASSAYED BY A SPECTROPHOTOMETRIC METHOD(405 NM) COMPARING THE GROWTH RATE OF BACTERIA IN DF MEDIUM WITH ACC AS WELL AS THE MEDIUM CONTAINING AMMONIUM SULPHATE THAT REVEALED B. MEGATERIUM WITH THE MEASURED NUMBER OF 1.569 WAS THE BEST STRAIN IN THIS CASE. SIDEROPHORE EXPERIMENT SHOWED THAT NONE OF THE BACTERIA WERE ABLE TO PRODUCE ORANGE HALO IN CAS-AGAR PLATES AND ONLY B. MEGATERIUM PRODUCED A COLONY WITH THE DIAMETER OF 5.1 MM AFTER 48 HOURS. OTHER STRAINS DID NOT GROW AT ALL.

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APA: Copy

YOUNESI, SARA, ASGHARZADEH, AHMAD, & DARVISH, FAROKH. (2016). EVALUATION OF PLANT GROWTH PROMOTING CHARACTERISTICS OF SOME STRAINS OF BACILLUS BACTERIA. INTERNATIONAL CONFERENCE ON AGRICULTURAL ENGINEERING AND NATURAL RESOURCES. SID. https://sid.ir/paper/909693/en

Vancouver: Copy

YOUNESI SARA, ASGHARZADEH AHMAD, DARVISH FAROKH. EVALUATION OF PLANT GROWTH PROMOTING CHARACTERISTICS OF SOME STRAINS OF BACILLUS BACTERIA. 2016. Available from: https://sid.ir/paper/909693/en

IEEE: Copy

SARA YOUNESI, AHMAD ASGHARZADEH, and FAROKH DARVISH, “EVALUATION OF PLANT GROWTH PROMOTING CHARACTERISTICS OF SOME STRAINS OF BACILLUS BACTERIA,” presented at the INTERNATIONAL CONFERENCE ON AGRICULTURAL ENGINEERING AND NATURAL RESOURCES. 2016, [Online]. Available: https://sid.ir/paper/909693/en

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