Fig. 1. Isolation of auxin-producing strains using Salkowski-R2A broth.
Fig. 2. Phylogenetic trees of strain Yangsong-1 estimated from 16S rRNA gene sequence.
Fig. 3. TLC analysis of IAA produced from the selected strains. Concentration of IAA standard:100 mg L-1
Fig. 4. HPLC chromatogram of auxin extracted from the strains IAA standard 100 mg L-1(A), Yangsong-1 (B).
Fig. 5. The profile of IAA production of Arthrobacter enclensis Yangsong-1 based on incubation time.
Fig. 6. The profile of viable cells of Arthrobacter enclensis Yangsong-1 based on incubation time.
Fig. 7. The effect of concentration of L-tryptophan(%) on IAA production from Arthrobacter enclensis Yangsong-1.
Fig. 8. The effect of concentration of L-tryptophan(%) on Cell Growth from Arthrobacter enclensis Yangsong-1
Table 1. Estimation of IAA produced from the Isolated strains by HPLC.
Table 2. Growth effect of mung bean infected with producing bacteria in water culture and seed pot culture.
Table 3. Growth effect of lettuce infected with auxinproducing bacterium in seed pot culture
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