วารสารวิจัย มข.
ปีที่ 19 | ฉบับที่ 6plus มกราคม - กุมภาพันธ์ 2558
ชื่อเรื่อง :
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Title :
Optimization of indole-3-acetic acid (IAA) production by rhizobacteria isolated from epiphytic orchids
ผู้แต่ง :
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Authors :
Kajohnpong Dasri, Jureeporn Kaewharn, Sungwan Kanso and Suphavee Sangchanjiradet
บทคัดย่อ :
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Abstract :
The optimal conditions for indole-3-acetic acid (IAA) production by bacterial isolate DPY-05 (Gram-positive, rods), living in association with aerial orchid roots (Dendrobium pulchellum) were studied. The factors that affect the IAA production were investigated including culture media, pH, temperature, agitation and culture period. The results showed that the isolated DPY-05 gave the highest amount of IAA of 67.18 ?g/ml when cultured in King-B medium supplemented with tryptophan 2.5 mM (KB+Trp) pH 7.0 at 37oC in static condition for 6 days.
คำสำคัญ :
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Keywords :
Optimization, Indole-3-acetic acid, Orchid rhizosphere, Plant-growth promoting rhizobacteria