Abstract
Salt-tolerant plant growth-promoting rhizobacteria (PGPR) could be an alternative to alleviate salinity problems in rice plants grown in the coastal areas. This study was conducted to isolate and characterize salt-tolerant PGPR and observe their effects on the physiological and biochemical properties of rice plants grown under non-saline and saline glasshouse conditions. Three strains were selected based on their salt-tolerance and plant growth-promoting properties under in vitro saline conditions. These strains were identified as Bacillus tequilensis (UPMRB9), Bacillus aryabhattai (UPMRE6), and Providencia stuartii (UPMRG1) using a 16S rRNA technique. The selected strains were inoculated to three different rice varieties, namely BRRI dhan67 (salt-tolerant), Putra-1 (moderate salt-tolerant), and MR297 (salt-susceptible) under glasshouse conditions. Results showed that the MR297 rice variety inoculated with UPMRB9 produced the highest total chlorophyll content, with an increment of 28%, and lowest electrolyte leakage of 92%. The Putra-1 rice variety also showed a 156% total dry matter increase with the inoculation of this bacterial strain. The highest increase of relative water content and reduction of Na/K ratio were found upon inoculation of UPMRE6 and UPMRB9, respectively. The biggest significant effects of these bacterial inoculations were on relative water content, electrolyte leakage, and the Na/K ratio of the BRRI dhan67 rice variety under saline conditions, suggesting a synergistic effect on the mechanisms of plant salt-tolerance. This study has shown that the application of locally-isolated salt-tolerant PGPR strains could be an effective long-term and sustainable solution for rice cultivation in the coastal areas, which are affected by global climate change.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
UPMRB9-inoculated MR297 had the highest total chlorophyll content, increasing 28%.
- Taxon
- rice
Oryza sativae0 - Material
- MR297e0
- Treatment
- inoculated with UPMRB9e0
- Interactor
- UPMRB9e0symbiont
- Outcome
- total chlorophyll contente0
- Direction
- higheste0
- Value
- 28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MR297 rice variety inoculated with UPMRB9 produced the highest total chlorophyll content, with an increment of 28%”
Claim · model-written summary
UPMRB9-inoculated MR297 had the lowest electrolyte leakage, reported as 92%.
- Taxon
- riceOryza sativae0
- Material
- MR297e0
- Treatment
- inoculated with UPMRB9e0
- Interactor
- UPMRB9e0symbiont
- Outcome
- electrolyte leakagee0
- Direction
- loweste0
- Value
- 92%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MR297 rice variety inoculated with UPMRB9 produced the highest total chlorophyll content, with an increment of 28%, and lowest electrolyte leakage of 92%.”
Claim · model-written summary
UPMRB9 inoculation increased total dry matter in Putra-1 by 156%.
- Taxon
- riceOryza sativae0
- Material
- Putra-1e0
- Treatment
- inoculation of this bacterial straine0
- Outcome
- total dry mattere0
- Direction
- increasee0
- Value
- 156%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Putra-1 rice variety also showed a 156% total dry matter increase with the inoculation of this bacterial strain.”
Claim · model-written summary
UPMRE6 inoculation produced the greatest rise in relative water content.
- Taxon
- RiceOryza sativat0
- Treatment
- inoculation of UPMRE6e0
- Interactor
- UPMRE6e0symbiont
- Outcome
- relative water contente0
- Direction
- highest increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest increase of relative water content and reduction of Na/K ratio were found upon inoculation of UPMRE6 and UPMRB9, respectively.”
t0“Rice Seedlings”
Claim · model-written summary
UPMRB9 inoculation produced the greatest reduction in Na/K ratio.
- Taxon
- RiceOryza sativat0
- Treatment
- inoculation of UPMRE6 and UPMRB9e0
- Interactor
- UPMRB9e0symbiont
- Outcome
- Na/K ratioe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest increase of relative water content and reduction of Na/K ratio were found upon inoculation of UPMRE6 and UPMRB9, respectively.”
t0“Rice Seedlings”
Claim · model-written summary
Bacterial inoculations significantly affected water content, electrolyte leakage and Na/K ratio most strongly in BRRI dhan67 under salinity.
- Taxon
- riceOryza sativae0
- Material
- BRRI dhan67e0
- Treatment
- bacterial inoculationse0
- Outcome
- relative water content, electrolyte leakage, and the Na/K ratioe0
- Qualifier
- under saline conditionse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biggest significant effects of these bacterial inoculations were on relative water content, electrolyte leakage, and the Na/K ratio of the BRRI dhan67 rice variety under saline conditions”
Claim · model-written summary
The authors propose locally isolated salt-tolerant PGPR for sustainable coastal rice cultivation.
- Taxon
- riceOryza sativae0
- Outcome
- application of locally-isolated salt-tolerant PGPR strainse0
- Setting
- coastal arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of locally-isolated salt-tolerant PGPR strains could be an effective long-term and sustainable solution for rice cultivation in the coastal areas”
The same questions in other papers
inoculation · physiology: oxidative · Oryza sativa (rice)Positive and negative results
23 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
21 papers more in this group
See all 25 papers →inoculation · physiology: pigments · Oryza sativa (rice)Positive and negative results
63 papers in the same direction as this paper · 3 in the opposite direction
- positive
- negative
- negative
63 papers more in this group
See all 67 papers →inoculation · growth · Oryza sativa (rice)Positive and negative results
361 papers in the same direction as this paper · 34 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
- positive
395 papers more in this group
See all 399 papers →inoculation · physiology: water · Oryza sativa (rice)Results agree
13 papers in the same direction as this paper
- positive
- positive
- positive
10 papers more in this group
See all 14 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.