Abstract
Rhizobacteria may promote plant growth by cleaving plant‐produced 1‐aminocyclopropane‐1‐carboxylic acid (ACC) through ACC‐deaminase activity. The effectiveness of plant‐growth‐promoting rhizobacteria (PGPR) for improving the growth and yield of wheat ( Triticum aestivum L.) was evaluated under salinity stress. The effect of high ethylene concentrations on plant growth and performance of these strains for reducing this negative impact was also evaluated by conducting a classical triple‐response bioassay. Eighteen rhizobacterial strains containing ACC‐deaminase were screened by conducting a jar experiment under axenic conditions at 1 (original), 5, 10, and 15 dS m −1 The four most effective strains were further evaluated in a pot trial at salinity levels of 1.46 (original), 5, 10, and 15 dS m −1 In general, salinity depressed the growth of wheat, but inoculation improved the growth and yield of wheat compared with the uninoculated controls. At the high salinity level (15 dS m −1 ), plant height, root length, plant biomass, and grain yield increased up to 37, 70, 116, and 111%, respectively, compared with the control. Results indicated that inoculated plants had higher K + /Na + ratios, relative water contents and chlorophyll content; however, relatively low proline contents compared with controls. The results also showed that intensity of the classical triple response decreased due to inoculation with these strains. Pseudomonas putida (W2 ) and P. fluorescens (W17) were the most effective strains for alleviating salt stress even at higher salinity levels. Our results suggest that the assay for ACC‐deaminase activity could be an efficient approach to screen effective PGPR for increasing the growth and yield of wheat under salt‐stressed conditions.
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Claims 11
Claim · model-written summary
Salinity depressed wheat growth.
- Taxon
- wheat
Triticum aestivume0 - Outcome
- growth of wheate0
- Direction
- depressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general, salinity depressed the growth of wheat”
Claim · model-written summary
Inoculation improved wheat growth and yield relative to uninoculated controls.
- Taxon
- wheatTriticum aestivume0
- Treatment
- inoculatione0
- Outcome
- growth and yield of wheate0
- Direction
- improvede0
- Comparator
- uninoculated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation improved the growth and yield of wheat compared with the uninoculated controls.”
Claim · model-written summary
At 15 dS m −1 inoculation increased plant height up to 37 relative to control.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- plant heighte0
- Direction
- increasede0
- Value
- 37e0
- Qualifier
- 15 dS m −1e0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the high salinity level (15 dS m −1 ), plant height, root length, plant biomass, and grain yield increased up to 37, 70, 116, and 111%, respectively, compared with the control.”
t0“Wheat”
Claim · model-written summary
At 15 dS m −1 inoculation increased root length up to 70 relative to control.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- root lengthe0
- Direction
- increasede0
- Value
- 70e0
- Qualifier
- 15 dS m −1e0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the high salinity level (15 dS m −1 ), plant height, root length, plant biomass, and grain yield increased up to 37, 70, 116, and 111%, respectively, compared with the control.”
t0“Wheat”
Claim · model-written summary
At 15 dS m −1 inoculation increased plant biomass up to 116 relative to control.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- plant biomasse0
- Direction
- increasede0
- Value
- 116e0
- Qualifier
- 15 dS m −1e0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the high salinity level (15 dS m −1 ), plant height, root length, plant biomass, and grain yield increased up to 37, 70, 116, and 111%, respectively, compared with the control.”
t0“Wheat”
Claim · model-written summary
At 15 dS m −1 inoculation increased grain yield up to 111% relative to control.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 111%e0
- Qualifier
- 15 dS m −1e0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the high salinity level (15 dS m −1 ), plant height, root length, plant biomass, and grain yield increased up to 37, 70, 116, and 111%, respectively, compared with the control.”
t0“Wheat”
Claim · model-written summary
Inoculated wheat had higher K + /Na + ratios, relative water contents and chlorophyll content.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- K + /Na + ratios, relative water contents and chlorophyll contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculated plants had higher K + /Na + ratios, relative water contents and chlorophyll content”
t0“Wheat”
Claim · model-written summary
Inoculated wheat had lower proline contents.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- proline contentse0
- Direction
- lowe0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“however, relatively low proline contents compared with controls.”
t0“Wheat”
Claim · model-written summary
Inoculation decreased the intensity of the classical triple response.
- Taxon
- WheatTriticum aestivumt0
- 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“intensity of the classical triple response decreased due to inoculation with these strains.”
t0“Wheat”
Claim · model-written summary
Pseudomonas putida (W2 ) was among the most effective strains for salt stress alleviation.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- Pseudomonas putida (W2 )
Pseudomonas putidae0symbiont - Outcome
- most effective strains for alleviating salt stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pseudomonas putida (W2 ) and P. fluorescens (W17) were the most effective strains for alleviating salt stress even at higher salinity levels.”
t0“Wheat”
Claim · model-written summary
P. fluorescens (W17) was among the most effective strains for salt stress alleviation.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- P. fluorescens (W17)
.JPG?width=60)
Pseudomonas fluorescense0symbiont - Outcome
- most effective strains for alleviating salt stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Pseudomonas putida (W2 ) and P. fluorescens (W17) were the most effective strains for alleviating salt stress even at higher salinity levels.”
t0“Wheat”
The same questions in other papers
inoculation · yield · Triticum aestivum (wheat)Positive and negative results
548 papers in the same direction as this paper · 60 in the opposite direction · 5 reporting no difference from an alternative
- positive
- positive
- positive
610 papers more in this group
See all 614 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.