Abstract
Twenty-five strains of plant-growth-promoting rhizobacteria (PGPR) containing 1-aminocyclopropane-1-carboxylate (ACC) deaminase and 10 strains of rhizobia were isolated from rhizosphere soil samples and nodules of mung bean. They were screened in separate trials under salt-stressed axenic conditions. The three most effective strains of PGPR (Mk1, Pseudomonas syringae ; Mk20, Pseudomonas fluorescens ; and Mk25, Pseudomonas fluorescens biotype G) and Rhizobium phaseoli strains M1, M6, and M9 were evaluated in coinoculation for their growth-promoting activity at three salinity levels (original, 4 dS·m(-1), and 6 dS·m(-1)) under axenic conditions. The results showed that salinity stress significantly reduced plant growth but inoculation with PGPR containing ACC deaminase and rhizobia enhanced plant growth, thus reducing the inhibitory effect of salinity. However, their combined application was more effective under saline conditions, and the combination Mk20 × M6 was the most efficient for improving seedling growth and nodulation. The effect of high ethylene concentrations on plant growth and the performance of these strains for reducing the negative impact of saline stress was also evaluated by conducting a classical triple-response bioassay. The intensity of the classical triple response decreased owing to inoculation with these strains, with the root and shoot lengths of inoculated mung bean seedlings increasing and stem diameter decreasing, which is a typical response to the dilution in a classical triple response bioassay. Thus, coinoculation with PGPR containing ACC deaminase and Rhizobium spp. could be a useful approach for inducing salt tolerance and thus improving growth and nodulation in mung bean under salt-affected conditions.
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Claims 9
Claim · model-written summary
Salinity stress significantly reduced mung bean growth.
- Taxon
- mung bean
.jpg?width=60)
Vigna radiatat0 - Treatment
- salinity stresse0
- Outcome
- plant growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“salinity stress significantly reduced plant growth”
t0“mung bean”
Claim · model-written summary
PGPR containing ACC deaminase enhanced growth under salinity.
- Taxon
- mung beanVigna radiatat0
- Treatment
- inoculation with PGPR containing ACC deaminasee0
- Interactor
- PGPRe0symbiont
- Outcome
- plant growthe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with PGPR containing ACC deaminase and rhizobia enhanced plant growth, thus reducing the inhibitory effect of salinity”
t0“mung bean”
Claim · model-written summary
Rhizobial inoculation enhanced growth under salinity.
- Taxon
- mung beanVigna radiatat0
- Treatment
- rhizobiae0
- Interactor
- rhizobiae0symbiont
- Outcome
- plant growthe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with PGPR containing ACC deaminase and rhizobia enhanced plant growth, thus reducing the inhibitory effect of salinity”
t0“mung bean”
Claim · model-written summary
Combined application was more effective under saline conditions.
- Taxon
- mung beanVigna radiatat0
- Treatment
- combined applicatione0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Qualifier
- under saline conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their combined application was more effective under saline conditions”
t0“mung bean”
Claim · model-written summary
Mk20 × M6 was most efficient for seedling growth and nodulation.
- Taxon
- mung beanVigna radiatat0
- Treatment
- combination Mk20 × M6e0
- Outcome
- seedling growth and nodulatione0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination Mk20 × M6 was the most efficient for improving seedling growth and nodulation”
t0“mung bean”
Claim · model-written summary
Inoculation decreased classical triple-response intensity.
- Taxon
- mung beanVigna radiatat0
- Treatment
- inoculation with these strainse0
- Outcome
- intensity of the classical triple responsee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The intensity of the classical triple response decreased owing to inoculation with these strains”
t0“mung bean”
Claim · model-written summary
Inoculated seedlings had increased root and shoot lengths.
- Taxon
- mung beanVigna radiatae0
- Treatment
- inoculatede0
- Outcome
- root and shoot lengthse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root and shoot lengths of inoculated mung bean seedlings increasing”
t0“mung bean”
Claim · model-written summary
Inoculated seedlings had decreased stem diameter.
- Taxon
- mung beanVigna radiatat0
- Outcome
- stem diametere0
- Direction
- decreasinge0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stem diameter decreasing”
t0“mung bean”
Claim · model-written summary
Coinoculation could improve salt tolerance, growth and nodulation under salt-affected conditions.
- Taxon
- mung beanVigna radiatae0
- Outcome
- coinoculation with PGPR containing ACC deaminase and Rhizobium spp. could be a useful approache0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“coinoculation with PGPR containing ACC deaminase and Rhizobium spp. could be a useful approach for inducing salt tolerance and thus improving growth and nodulation in mung bean under salt-affected conditions”
t0“mung bean”
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See all 126 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.