Abstract
There is no information on Nepalese sweet potato endophytes. We isolated 243 endophytic bacteria belonging to 34 genera in six classes from 12 locations of Nepal. Among them, the predominant classes were Bacilli and Gammaproteobacteria. The principal component analysis revealed that the composition of bacterial classes was unrelated to the environmental parameters of the sampling sites. Regarding their plant growth promoting potentials, 57% of the strains demonstrated indole-3-acetic acid (IAA) producing ability while 5% strains had nitrogen fixing gene (nifH) and acetylene reduction assay (ARA) activity. The representative strains in all six classes showed antagonistic effect against bacterial pathogens while only Bacillus strain showed the effect against fungal pathogen. For endophytic traits, cellulase activity was observed in 5 classes, while pectinase activity was only in Proteobacteria. Fresh weight and vine length of sweet potato increased by inoculating mixed cultures of the isolates from each location.
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Claims 10
Claim · model-written summary
Researchers isolated 243 endophytic bacteria from sweet potato across 12 Nepal locations.
- Taxon
- Sweet Potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Interactor
- endophytic bacteriae0symbiont
- Outcome
- 243 endophytic bacteria belonging to 34 genera in six classese0
- Value
- 243e0
- Setting
- Nepale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“We isolated 243 endophytic bacteria belonging to 34 genera in six classes from 12 locations of Nepal”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Bacilli and Gammaproteobacteria were the predominant endophyte classes.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- Bacilli and GammaproteobacteriaGammaproteobacteriaBacillie0symbiont
- Outcome
- predominant classes were Bacilli and Gammaproteobacteriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the predominant classes were Bacilli and Gammaproteobacteria”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Bacterial class composition was unrelated to sampling-site environmental parameters.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- bacterial classese0symbiont
- Outcome
- composition of bacterial classese0
- Direction
- unrelatede0
- Setting
- sampling sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“composition of bacterial classes was unrelated to the environmental parameters of the sampling sites”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Fifty-seven percent of endophytic strains produced IAA.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- strainse0symbiont
- Outcome
- indole-3-acetic acid (IAA) producing abilitye0
- Value
- 57%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“57% of the strains demonstrated indole-3-acetic acid (IAA) producing ability”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Five percent of strains had nifH and acetylene reduction activity.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- strainse0symbiont
- Gene
- nifHe0
- Outcome
- acetylene reduction assay (ARA) activitye0
- Value
- 5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5% strains had nitrogen fixing gene (nifH) and acetylene reduction assay (ARA) activity”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Representative strains in all six classes antagonized bacterial pathogens.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- bacterial pathogense0pathogen
- Second interactor
- representative strainse0biocontrol_agent
- Outcome
- antagonistic effect against bacterial pathogense0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“representative strains in all six classes showed antagonistic effect against bacterial pathogens”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Only the Bacillus strain antagonized the fungal pathogen.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- fungal pathogene0pathogen
- Second interactor
- Bacillus straine0biocontrol_agent
- Outcome
- effect against fungal pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only Bacillus strain showed the effect against fungal pathogen”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Cellulase activity occurred in five endophyte classes.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- classese0symbiont
- Outcome
- cellulase activitye0
- Value
- 5 classese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cellulase activity was observed in 5 classes”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Pectinase activity occurred only in Proteobacteria.
- Taxon
- Sweet PotatoIpomoea batatast0
- Interactor
- ProteobacteriaPseudomonadotae0symbiont
- Outcome
- pectinase activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pectinase activity was only in Proteobacteria”
t0“Nepalese Sweet Potato”
Claim · model-written summary
Inoculating isolate mixtures increased sweet potato fresh weight and vine length.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- inoculating mixed cultures of the isolatese0
- Interactor
- isolatese0symbiont
- Outcome
- Fresh weight and vine lengthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh weight and vine length of sweet potato increased by inoculating mixed cultures of the isolates from each location”
The same questions in other papers
inoculation · growth · Ipomoea batatas (sweet potato)Positive and negative results
15 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- positive
- negative
16 papers more in this group
See all 20 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.