Abstract
A collection of Streptomyces spp. isolated from the rhizosphere soils of 14 Thai medicinal plants were found to produce, the plant growth hormone indole-3-acetic acid (IAA) in a yeast malt extract medium supplemented with 2 mg/mL L-tryptophan. Streptomyces CMU-H009 recovered from soil associated with lemongrass (Cymbopogon citratus) was very effective in producing IAA. Based on the 16S rDNA sequence analysis, this strain was most closely related to Streptomyces viridis NBRC 13373T (99.3% similarity). The IAA production was maximums (300 mg/mL) when the strain CMU-H009 was cultivated in a yeast malt extract broth amended with 2 mg/mL L-tryptophan a pH 7.0, and incubated at 30 o C with shaking at 125 rpm for 3 d. The culture filtrate from the strain CMU-H009 stimulated a significant increase in the germination and root elongation of maize (Zea mays) and cow pea (Bruguiera parviflora) seeds. The IAA from this strain was extracted, purified and identified by thin layer chromatography.
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Claims 7
Claim · model-written summary
Streptomyces isolates from medicinal plant rhizospheres produced indole-3-acetic acid in supplemented medium.
- Taxon
- Streptomyces spp.
Streptomycese0 - Treatment
- 2 mg/mL L-tryptophane0
- Outcome
- indole-3-acetic acid (IAA)e0
- Setting
- rhizosphere soils of 14 Thai medicinal plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A collection of Streptomyces spp. isolated from the rhizosphere soils of 14 Thai medicinal plants were found to produce, the plant growth hormone indole-3-acetic acid (IAA) in a yeast malt extract medium supplemented with 2 mg/mL L-tryptophan.”
Claim · model-written summary
Streptomyces CMU-H009 was particularly effective at producing IAA.
Verbatim
e0“Streptomyces CMU-H009 recovered from soil associated with lemongrass (Cymbopogon citratus) was very effective in producing IAA.”
Claim · model-written summary
CMU-H009 was most closely related to Streptomyces viridis NBRC 13373T at 99.3% sequence similarity.
Verbatim
e0“this strain was most closely related to Streptomyces viridis NBRC 13373T (99.3% similarity)”
e1“Streptomyces CMU-H009 recovered from soil”
Claim · model-written summary
CMU-H009 reached maximum IAA production of 300 mg/mL under the stated culture conditions.
Verbatim
e0“The IAA production was maximums (300 mg/mL) when the strain CMU-H009 was cultivated in a yeast malt extract broth amended with 2 mg/mL L-tryptophan a pH 7.0, and incubated at 30 o C with shaking at 125 rpm for 3 d.”
Claim · model-written summary
CMU-H009 culture filtrate significantly increased maize seed germination and root elongation.
- Treatment
- culture filtrate from the strain CMU-H009e0
- Interactor
- CMU-H009e0symbiont
- Outcome
- germination and root elongatione0
- Direction
- increasee0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The culture filtrate from the strain CMU-H009 stimulated a significant increase in the germination and root elongation of maize (Zea mays) and cow pea (Bruguiera parviflora) seeds.”
Claim · model-written summary
CMU-H009 culture filtrate significantly increased cow pea seed germination and root elongation.
- Taxon
- cow pea (Bruguiera parviflora)
Bruguiera parviflorae0 - Treatment
- culture filtrate from the strain CMU-H009e0
- Interactor
- CMU-H009e0symbiont
- Outcome
- germination and root elongatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The culture filtrate from the strain CMU-H009 stimulated a significant increase in the germination and root elongation of maize (Zea mays) and cow pea (Bruguiera parviflora) seeds.”
Claim · model-written summary
IAA produced by CMU-H009 was extracted, purified and identified by thin layer chromatography.
Verbatim
e0“The IAA from this strain was extracted, purified and identified by thin layer chromatography.”
e1“Streptomyces CMU-H009 recovered from soil”
The same questions in other papers
pathogen product · growth · Zea mays (maize)Positive and negative results
11 papers in the same direction as this paper · 12 in the opposite direction
- negative
- negative
- no effect
20 papers more in this group
See all 24 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.