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Correlation of growth and IAA production of Lysinibacillus Fusiformis UD 270

Author

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  • Huynh Thi Thuy Hanh

    (Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand)

  • Wiyada Mongkolthanaruk

    (Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand)

Abstract

Plant Growth Promoting Bacteria (PGPB) have been considered as beneficial microorganisms that can promote plant growth by their potential mechanism, particularly Indole-3-Acetic Acid (IAA) production. Lysinibacillus fusiformis UD 270 isolated from local plants in Khon Kaen, Thailand displayed its capability to produce IAA from tryptophan well-known as its precursor. Thus, the study was investigated in IAA biosynthesis with different concentrations of tryptophan and bacterial cell number as well as observed the correlation between bacterial growth and IAA production. The bacteria were grown in nutrient broth supplemented with 0, 0.5, 1, 2, 3, 4, and 5 mg mL-1 of tryptophan at 30oC for 72h. Reasonable bacterial growth and IAA production were appreciably determined at 36h of incubation in 5 mg mL-1 of tryptophan. Meanwhile, the pH of the culture media was gradually increased at the beginning and made stable after 36h. Moreover, when the cell concentration was varied from 103 to 109 Colony-Forming Unit (CFU) mL-1 ,the IAA production was significantly higher at high cell concentrations, concretely with 107 and 109 CFU mL-1. Also, a positive correlation between growth and IAA production was indicated in the two experiments. The results have referred for the suitable uses of tryptophan and cell number for bacterial growth and IAA biosynthesis of L. fusiformis UD 270 to apply for further researches.

Suggested Citation

  • Huynh Thi Thuy Hanh & Wiyada Mongkolthanaruk, 2017. "Correlation of growth and IAA production of Lysinibacillus Fusiformis UD 270," Journal of Applied and Physical Sciences, Prof. Vakhrushev Alexander, vol. 3(3), pages 98-106.
    • Handle: RePEc:apb:japsss:2017:p:98-106
    DOI: 10.20474/japs-3.3.3
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    1. Mohammed Bakoji Yusuf & Begham Mustafa Firuza & Osman Salleh Khairulmaini, 2017. "Variation in Soil Physiochemical Properties at Different Land Use Sites in Northeastern Nigeria," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 3(1), pages 20-28.
    2. Citra Recha Sari & Jemma Taylor & Yiguo Hong & Stephen Jackson, 2016. "Development of a Transient Viral CRISPR Expression System to Manipulate Flowering Time in Plants," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 2(3), pages 65-70.
    3. Valentina Chernenok & Akhylbek Kurishbayev & Arseniy Kudashev & Yerbol Nurmanov, 2015. "Diagnostics and optimization of crops’ nitrogen nutrition in rainfed conditions of the Northern Kazakhstan," Journal of Applied and Physical Sciences, Prof. Vakhrushev Alexander, vol. 1(1), pages 1-8.
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    1. Kanokwan Chansoda & Sophon Boonlue & Wiyada Mongkolthanaruk, 2018. "Efficient Precipitation Methods of Inulinase from Endophytic Bacteria Bacillus aquimaris Isolated from Jerusalem Artichoke," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 4(3), pages 110-115.
    2. Sudiarso & Ririen Prihandarini, 2018. "The effect of biofertilizer and inorganic fertilizer on the vegetative growth of sugarcane (Saccharum Officinarum)," Journal of Applied and Physical Sciences, Prof. Vakhrushev Alexander, vol. 4(1), pages 8-13.

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