Abstract
An auxin-producing bacteria (strain 5-1) was isolated from button mushroom compost in Boryeong-Si, Chungcheongnam-Do. The 5-1 strain was classified as a novel strain of Enterobacter aerogenes based on chemotaxonomic and phylogenetic analyses. The isolated E. aerogenes 5-1 was confirmed to produce indole-3-acetic acid (IAA), one of the auxin hormones, using TLC and HPLC analyses. When the concentration of IAA was assessed by performing HPLC quantitative analysis, a maximum concentration of IAA of $109.9mgL^{-1}$ was detected in the culture broth incubated in R2A medium containing 0.1% L-tryptophan for 24 h at $35^{\circ}C$. Acidification of the culture was deemed caused by an increase of IAA because a negative relationship between IAA production and pH was observed. Supplementation with a known precursor of IAA production, L-tryptophan, appeared to induce maximal production at 0.1% concentration, but it reduced production at concentrations above 0.2%. To investigate the growth-promoting effects to crops, the culture broth of E. aerogenes 5-1 was used to inoculate water cultures and seed pots of mung bean and lettuce. In consequence, adventitious root induction and root growth of mung bean and lettuce were two times higher than those of the control.
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Claims 2
Claim · model-written summary
E. aerogenes culture doubled adventitious root induction and root growth in mung bean.
- Taxon
- mung bean
.jpg?width=60)
Vigna radiatae0 - Treatment
- culture broth of E. aerogenes 5-1e0
- Interactor
- E. aerogenes 5-1
Klebsiella aerogenese0symbiont - Outcome
- adventitious root induction and root growthe0
- Direction
- highere0
- Value
- two timese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the culture broth of E. aerogenes 5-1 was used to inoculate water cultures and seed pots of mung bean and lettuce. In consequence, adventitious root induction and root growth of mung bean and lettuce were two times higher than those of the control.”
Claim · model-written summary
E. aerogenes culture doubled adventitious root induction and root growth in lettuce.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- culture broth of E. aerogenes 5-1e0
- Interactor
- E. aerogenes 5-1Klebsiella aerogenese0symbiont
- Outcome
- adventitious root induction and root growthe0
- Direction
- highere0
- Value
- two timese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the culture broth of E. aerogenes 5-1 was used to inoculate water cultures and seed pots of mung bean and lettuce. In consequence, adventitious root induction and root growth of mung bean and lettuce were two times higher than those of the control.”
The same questions in other papers
Klebsiella aerogenes · growth · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
Klebsiella aerogenes · growth · Vigna radiata (mung bean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.