Abstract
Soil salinity is one of the most widespread agricultural problems which reduce the field crop productivity. Salinity disturbs the hormonal balance in plants which results in poor growth. Use of plant growth promoting rhizobacteria (PGPR) is considered an economical and environment-friendly approach to combat salinity stress. This study was carried out to investigate the effect of auxin producing PGPR on the growth, antioxidant status and mineral content of maize (Zea mays) in salt affected soils. Rhizobacterial strains were isolated from the rhizosphere of maize growing under salt affected soil conditions. These strains were screened on the basis of auxin production and their ability to withstand salinity stress. Two stains (MA4 and MA11) which produced highest auxin and tolerated maximum salinity were selected for further evaluation in a field experiment. The results of field trial showed that soil salinity reduced the plant growth, mineral nutrient uptake and yield of maize while antioxidant activity and proline concentration was increased. However, rhizobacterial inoculation improved grain yield (31%), fresh biomass (56%) and phosphorous contents in grains (26%) while the proline concentration (41%), ascorbate peroxidase (59%) and SOD values (42%) in leaves were declined. The results of present study signify the role of auxin producing rhizobacteria under salt affected field conditions.
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Claims 8
Claim · model-written summary
Salinity reduced maize growth, nutrient uptake and yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil salinity reduced the plant growth, mineral nutrient uptake and yield of maize”
Claim · model-written summary
Salinity increased maize antioxidant activity and proline concentration.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antioxidant activity and proline concentration was increased”
t0“maize”
e1“soil salinity reduced the plant growth, mineral nutrient uptake and yield of maize”
Claim · model-written summary
Rhizobacterial inoculation improved maize grain yield by 31%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizobacterial inoculation improved grain yield (31%)”
t0“maize”
Claim · model-written summary
Rhizobacterial inoculation improved fresh biomass by 56%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizobacterial inoculation improved grain yield (31%), fresh biomass (56%)”
t0“maize”
Claim · model-written summary
Rhizobacterial inoculation improved grain phosphorus content by 26%.
- Treatment
- rhizobacterial inoculatione0
- Outcome
- phosphorous contents in grainse0
- Direction
- improvede0
- Value
- 26%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizobacterial inoculation improved grain yield (31%), fresh biomass (56%) and phosphorous contents in grains (26%)”
t0“maize”
Claim · model-written summary
Rhizobacterial inoculation reduced leaf proline concentration by 41%.
- Organ / stage
- leavese0
- Treatment
- rhizobacterial inoculatione1
- Outcome
- proline concentratione0
- Direction
- declinede0
- Value
- 41%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proline concentration (41%), ascorbate peroxidase (59%) and SOD values (42%) in leaves were declined”
t0“maize”
e1“rhizobacterial inoculation improved grain yield (31%)”
Claim · model-written summary
Rhizobacterial inoculation reduced leaf ascorbate peroxidase by 59%.
- Organ / stage
- leavese0
- Treatment
- rhizobacterial inoculatione1
- Outcome
- ascorbate peroxidasee0
- Direction
- declinede0
- Value
- 59%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proline concentration (41%), ascorbate peroxidase (59%) and SOD values (42%) in leaves were declined”
t0“maize”
e1“rhizobacterial inoculation improved grain yield (31%)”
Claim · model-written summary
Rhizobacterial inoculation reduced leaf SOD values by 42%.
- Organ / stage
- leavese0
- Treatment
- rhizobacterial inoculatione1
- Outcome
- SOD valuese0
- Direction
- declinede0
- Value
- 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proline concentration (41%), ascorbate peroxidase (59%) and SOD values (42%) in leaves were declined”
t0“maize”
e1“rhizobacterial inoculation improved grain yield (31%)”
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