Abstract
In the current study salt tolerant-plant growth-promoting rhizobacteria (ST-PGPR) Pseudomonas atacamensis KSS-6, selected on the basis of prominent plant growth-promoting (PGP) and stress tolerance properties was tested as bioinoculant to improve yield of rice grown in saline soil. The ST-PGPR KSS-6 was capable of maintaining the PGP traits up to 200 mM NaCl, however, higher salt stress conditions affected these activities. The study was designed to determine the effect of developed talc-based bioformulation using KSS-6 along with organic manure (OM) on growth and yield of paddy under saline conditions. Bioformulation broadcasting was also done to examine the effect on soil properties. It was found that the combinatorial treatment showed positive impact on growth and yield of rice under saline conditions. Co-application of KSS-6 with OM showed maximum increment in growth, chlorophyll content, plant fresh weight, and dry weight as compared to untreated control plants. Furthermore, the combinatorial treatment improved the nutrient content (P, K, Zn, Fe, Mg, and Mn) by more than 35% and enhanced the biochemical parameters such as proline, flavonoids, carbohydrates, protein, dietary fiber, and antioxidant content of rice grains by more than 32%. Soil parameters including pH and electrical conductivity (EC), moisture content, total organic carbon, OM, sodium, and chloride ions were also improved upon treatment. There was significant lowering of EC from 7.43 to 4.3 dS/m when combination of OM and bacteria were applied. These findings suggest that the application of KSS-6 in the form of bioinoculant could be a promising strategy to mitigate negative impacts of salt stress and enhance the yield and nutritional properties of rice grown in degraded and saline soil.
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Claims 9
Claim · model-written summary
KSS-6 maintained plant growth promoting traits up to 200 mM NaCl.
- Taxon
- rice
Oryza sativat0 - Interactor
- KSS-6e0symbiont
- Outcome
- PGP traitse0
- Value
- 200 mM NaCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ST-PGPR KSS-6 was capable of maintaining the PGP traits up to 200 mM NaCl”
t0“rice”
Claim · model-written summary
Higher salt stress impaired KSS-6 plant growth promoting activities.
- Taxon
- riceOryza sativat0
- Treatment
- higher salt stress conditionse0
- Interactor
- KSS-6e0symbiont
- Outcome
- activitiese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ST-PGPR KSS-6 was capable of maintaining the PGP traits up to 200 mM NaCl, however, higher salt stress conditions affected these activities.”
t0“rice”
Claim · model-written summary
Combined KSS-6 and manure improved rice growth and yield under saline conditions.
- Taxon
- riceOryza sativae0
- Treatment
- combinatorial treatmente0
- Outcome
- growth and yielde0
- Direction
- positive impacte0
- Setting
- saline conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combinatorial treatment showed positive impact on growth and yield of rice under saline conditions”
Claim · model-written summary
Combined KSS-6 and manure produced maximum rice growth, fresh weight and dry weight versus untreated controls.
- Taxon
- riceOryza sativat0
- Treatment
- Co-application of KSS-6 with OMe0
- Interactor
- KSS-6e0symbiont
- Outcome
- growth, chlorophyll content, plant fresh weight, and dry weighte0
- Direction
- maximum incremente0
- Comparator
- untreated control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Co-application of KSS-6 with OM showed maximum increment in growth, chlorophyll content, plant fresh weight, and dry weight as compared to untreated control plants.”
t0“rice”
Claim · model-written summary
Combined treatment increased rice nutrient content by more than 35%.
- Taxon
- riceOryza sativat0
- Treatment
- combinatorial treatmente0
- Outcome
- nutrient content (P, K, Zn, Fe, Mg, and Mn)e0
- Direction
- improvede0
- Value
- more than 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combinatorial treatment improved the nutrient content (P, K, Zn, Fe, Mg, and Mn) by more than 35%”
t0“rice”
Claim · model-written summary
Combined treatment enhanced rice grain biochemical parameters by more than 32%.
- Taxon
- riceOryza sativae0
- Organ / stage
- grainse0
- Outcome
- biochemical parameters such as proline, flavonoids, carbohydrates, protein, dietary fiber, and antioxidant content of rice grainse0
- Direction
- enhancede0
- Value
- more than 32%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced the biochemical parameters such as proline, flavonoids, carbohydrates, protein, dietary fiber, and antioxidant content of rice grains by more than 32%”
Claim · model-written summary
The treatment improved soil pH, EC, moisture, carbon, organic matter, sodium and chloride measures.
- Taxon
- riceOryza sativat0
- Treatment
- treatmente0
- Outcome
- Soil parameters including pH and electrical conductivity (EC), moisture content, total organic carbon, OM, sodium, and chloride ionse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil parameters including pH and electrical conductivity (EC), moisture content, total organic carbon, OM, sodium, and chloride ions were also improved upon treatment.”
t0“rice”
Claim · model-written summary
Combined manure and bacterial treatment significantly lowered soil EC from 7.43 to 4.3 dS/m.
- Taxon
- riceOryza sativat0
- Treatment
- combination of OM and bacteriae0
- Outcome
- ECe0
- Direction
- loweringe0
- Value
- 7.43 to 4.3 dS/me0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was significant lowering of EC from 7.43 to 4.3 dS/m when combination of OM and bacteria were applied.”
t0“rice”
Claim · model-written summary
The authors suggest KSS-6 bioinoculation to mitigate salt stress and improve rice yield and nutrition.
- Taxon
- riceOryza sativae0
- Outcome
- application of KSS-6 in the form of bioinoculante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of KSS-6 in the form of bioinoculant could be a promising strategy to mitigate negative impacts of salt stress and enhance the yield and nutritional properties of rice grown in degraded and saline soil”
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