Abstract
Growth and productivity of rice are negatively affected by soil salinity. However, some salt-tolerant rhizosphere-inhabiting bacteria can improve salt resistance of plants, thereby augmenting plant growth and production. Here, we isolated a total of 53 plant-growth-promoting rhizobacteria (PGPR) from saline and non-saline areas in Bangladesh where electrical conductivity was measured as >7.45 and <1.80 dS/m, respectively. Bacteria isolated from saline areas were able to grow in a salt concentration of up to 2.60 mol/L, contrary to the isolates collected from non-saline areas that did not survive beyond 854 mmol/L. Among the salt-tolerant isolates, Bacillus aryabhattai, Achromobacter denitrificans, and Ochrobactrum intermedium, identified by comparing respective sequences of 16S rRNA using the NCBI GenBank, exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid production at 200 mmol/L salt stress. Salt-tolerant isolates exhibited greater resistance to heavy metals and antibiotics, which could be due to the production of an exopolysaccharide layer outside the cell surface. Oryza sativa L. fertilized with B. aryabhattai MS3 and grown under 200 mmol/L salt stress was found to be favoured by enhanced expression of a set of at least four salt-responsive plant genes: BZ8, SOS1, GIG, and NHX1. Fertilization of rice with osmoprotectant-producing PGPR, therefore, could be a climate-change-preparedness strategy for coastal agriculture.
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Claims 8
Claim · model-written summary
Bacteria isolated from saline areas grew in salt concentrations up to 2.60 mol/L, whereas isolates from non-saline areas did not survive beyond 854 mmol/L.
Verbatim
e0“Bacteria isolated from saline areas were able to grow in a salt concentration of up to 2.60 mol/L, contrary to the isolates collected from non-saline areas that did not survive beyond 854 mmol/L”
Claim · model-written summary
Bacillus aryabhattai exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization and indoleacetic acid production at 200 mmol/L salt stress.
- Taxon
- Bacillus aryabhattaiPriestia aryabhattaie0
- Outcome
- atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid productione0
- Direction
- highere0
- Qualifier
- 200 mmol/L salt stresse0
Verbatim
e0“Bacillus aryabhattai, Achromobacter denitrificans, and Ochrobactrum intermedium, identified by comparing respective sequences of 16S rRNA using the NCBI GenBank, exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid production at 200 mmol/L salt stress”
Claim · model-written summary
Achromobacter denitrificans exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization and indoleacetic acid production at 200 mmol/L salt stress.
- Taxon
- Achromobacter denitrificansAchromobacter denitrificanse0
- Outcome
- atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid productione0
- Direction
- highere0
- Qualifier
- 200 mmol/L salt stresse0
Verbatim
e0“Bacillus aryabhattai, Achromobacter denitrificans, and Ochrobactrum intermedium, identified by comparing respective sequences of 16S rRNA using the NCBI GenBank, exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid production at 200 mmol/L salt stress”
Claim · model-written summary
Ochrobactrum intermedium exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization and indoleacetic acid production at 200 mmol/L salt stress.
- Taxon
- Ochrobactrum intermediumBrucella intermediae0
- Outcome
- atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid productione0
- Direction
- highere0
- Qualifier
- 200 mmol/L salt stresse0
Verbatim
e0“Bacillus aryabhattai, Achromobacter denitrificans, and Ochrobactrum intermedium, identified by comparing respective sequences of 16S rRNA using the NCBI GenBank, exhibited a higher amount of atmospheric nitrogen fixation, phosphate solubilization, and indoleacetic acid production at 200 mmol/L salt stress”
Claim · model-written summary
Salt-tolerant isolates exhibited greater resistance to heavy metals and antibiotics.
Verbatim
e0“Salt-tolerant isolates exhibited greater resistance to heavy metals and antibiotics”
Claim · model-written summary
The greater resistance of salt-tolerant isolates to heavy metals and antibiotics could be due to production of an exopolysaccharide layer outside the cell surface.
Verbatim
e0“Salt-tolerant isolates exhibited greater resistance to heavy metals and antibiotics, which could be due to the production of an exopolysaccharide layer outside the cell surface”
Claim · model-written summary
Rice fertilized with B. aryabhattai MS3 and grown under 200 mmol/L salt stress showed enhanced expression of salt-responsive genes BZ8, SOS1, GIG and NHX1.
- Taxon
- Oryza sativa L.
Oryza sativae0 - Treatment
- fertilized with B. aryabhattai MS3e0
- Interactor
- B. aryabhattai MS3Priestia aryabhattaie0symbiont
- Gene
- BZ8, SOS1, GIG, and NHX1e0
- Outcome
- expression of a set of at least four salt-responsive plant genese0
- Direction
- enhancede0
- Qualifier
- 200 mmol/L salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa L. fertilized with B. aryabhattai MS3 and grown under 200 mmol/L salt stress was found to be favoured by enhanced expression of a set of at least four salt-responsive plant genes: BZ8, SOS1, GIG, and NHX1”
Claim · model-written summary
Fertilizing rice with osmoprotectant-producing PGPR could be a climate-change-preparedness strategy for coastal agriculture.
- Taxon
- riceOryza sativae0
- Interactor
- PGPRe0symbiont
- Outcome
- climate-change-preparedness strategy for coastal agriculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization of rice with osmoprotectant-producing PGPR, therefore, could be a climate-change-preparedness strategy for coastal agriculture”
The same questions in other papers
fertilization · molecular: expression · Oryza sativa (rice)Positive and negative results
14 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
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See all 16 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.