Isolation and evaluation of the plant growth promoting rhizobacterium Bacillus methylotrophicus (DD-1) for growth enhancement of rice seedling

Archives of Microbiology
Zeping LiuZhigang Wang

Abstract

Bacillus methylotrophicus has been demonstrated to promote growth of various plants, whereas the promoting effect of B. methylotrophicus on rice growth has been rarely reported. In this study, B. methylotrophicus DD-1, capable of efficiently promoting the growth of rice, was isolated from the root soil of rice plants. The isolate exhibited potassium-solubilizing (1.18 mg/L), Indole-3-acetic acid (IAA) (87.26 mg/L), Gibberellic acid (GA) (25.91 mg/L) and Siderophore production activity (52.32%). As indicated from the result, plant growth parameters (e.g., dry weight, tiller number, root and shoot length) of rice seedlings treated with the isolate DD-1 were more effective than those of the control group in pot and soilless culture experiments. Moreover, the adsorption capacity of rice roots which were soaked in the bacterial suspension of isolate increased with the increase in concentration and absorption time. In sterilized and unsterilized soil, conformation of root colonization activity by bacterial isolate established by its nearer existence to the rice root. Thus, the B. methylotrophicus DD-1 enhances plant growth promotion by multifarious growth promoting and root colonization traits, thereby augmenting potassium level in s...Continue Reading

References

Oct 9, 2013·Journal of Microbiology and Biotechnology·Sang-Mo KangIn-Jung Lee
Oct 12, 2013·Microbiological Research·Subramaniam GopalakrishnanRajeev Kumar Varshney
Oct 11, 2016·Plant Physiology and Biochemistry : PPB·Ramalingam Radhakrishnan, In-Jung Lee
Feb 21, 2018·International Journal of Systematic and Evolutionary Microbiology·Yan-Ru CaoLian-Ming Liang
Apr 11, 2018·Archives of Microbiology·Kavitha ThulasiHarikrishnan Kumarapillai
May 24, 2018·International Journal of Systematic and Evolutionary Microbiology·Mohammad Ali AmoozegarAntonio Ventosa
Oct 5, 2018·World Journal of Microbiology & Biotechnology·Érica Barbosa FelestrinoLeandro Marcio Moreira

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