Abstract
Photosynthetic purple nonsulfur bacterial strains were isolated from the sediments collected from rice paddy fields and sludges of wastewater treatment plant, and their plant growth promoting capabilities were examined. Most well known phytohormones, auxin such as indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) and 5'-aminolevulinic acid (ALA) were detected by HPLC in the culture broth of these isolates. Among the isolated bacteria, Rhodopseudomonas faecalis D15 showed the highest production rate of 769.8 /mg protein of IAA, 1323 /mg protein of IBA and 7.4 mM/mg protein of ALA in the modified Biebl and Pfennig's medium. R. faecalis C9 showed the highest production rate of 20.82 /mg protein of gibberellin. In consequence, the root length and dry weight of the germinated tomato seedling treated with R. faecalis isolates were longer and heavier than those of uninoculated control after 15 days of incubation in the soil. Especially, the dry weight of germinated tomato seedling increased by 119.4% in C9-treated samples after 15 days. These purple nonsulfur bacteria may be utilized as environment-friendly biofertilizer in the agriculture.
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Claims 4
Claim · model-written summary
R. faecalis treatment lengthened germinated tomato seedling roots compared with uninoculated controls after 15 days.
- Taxon
- tomato seedling
Solanum lycopersicume0 - Treatment
- treated with R. faecalis isolatese0
- Interactor
- R. faecalis isolatesRhodopseudomonas faecalise0symbiont
- Outcome
- root lengthe0
- Direction
- longere0
- Comparator
- uninoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root length and dry weight of the germinated tomato seedling treated with R. faecalis isolates were longer and heavier than those of uninoculated control after 15 days of incubation in the soil.”
Claim · model-written summary
R. faecalis treatment increased germinated tomato seedling dry weight compared with uninoculated controls after 15 days.
- Taxon
- tomato seedlingSolanum lycopersicume0
- Treatment
- treated with R. faecalis isolatese0
- Interactor
- R. faecalis isolatesRhodopseudomonas faecalise0symbiont
- Outcome
- dry weighte0
- Direction
- heaviere0
- Comparator
- uninoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root length and dry weight of the germinated tomato seedling treated with R. faecalis isolates were longer and heavier than those of uninoculated control after 15 days of incubation in the soil.”
Claim · model-written summary
C9 treatment increased tomato seedling dry weight by 119.4% after 15 days.
- Taxon
- tomato seedlingSolanum lycopersicume0
- Treatment
- C9-treatede0
- Interactor
- C9e0symbiont
- Outcome
- dry weighte0
- Direction
- increasede0
- Value
- 119.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry weight of germinated tomato seedling increased by 119.4% in C9-treated samples after 15 days.”
Claim · model-written summary
The authors propose purple nonsulfur bacteria as biofertilizer.
- Taxon
- tomato seedlingSolanum lycopersicume1
- Outcome
- utilized as environment-friendly biofertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These purple nonsulfur bacteria may be utilized as environment-friendly biofertilizer in the agriculture.”
e1“germinated tomato seedling treated with R. faecalis isolates”