Abstract
Having in mind food security and the fact that basil (Ocimum basilicum L.) is used as fresh seasoning, the development of innovative technologies for its cultivation is required.This study aimed to isolate and characterize plant growth-promoting rhizobacteria (PGPR) isolates from basil rhizospheric soil and monitor the effects of their application on basil growth under different water stress conditions.Isolation, determination of isolates biochemical and PGP properties, evaluation of isolates influences on seed germination and parameters of growth of basil plant, growing under well-watered conditions (70% water holding capacity, WHC), under water deficit stress (35% WHC), and flooded conditions (95% WHC), were done.A total of five representative bacterial isolates were selected: Two Azotobacter isolates (A13, A14), one Pseudomonas isolate (P57), and two Bacillus isolates (B79, B82).The results of this experiment revealed that rhizospheric bacteria of O. basilicum L. var.minimum have multiple biochemical and PGP properties.The most intensive reactions on tested abiotic stressors -drought (higher total phenolics, reduced glutathione, and malondialdehyde content) and flooding (higher superoxide dismutase activity) -were from basil plants inoculated with Pseudomonas sp.P57 isolate, yet along with Azotobacter sp.isolate A13.The highest number of germinated seeds was obtained with the A13 isolate (96.0%), while the highest response for vigour index was observed with Azotobacter isolates (7200.0%and 5628.0%).In well-watered conditions, basil mass inoculated with P57 was 34.2% higher than control.In drought-stressed conditions, plant mass inoculated with A13 isolate was 90% higher than control.In flooded-stressed conditions, the plant mass inoculated with Azotobacter and Pseudomonas isolates increased by more than 100%.
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Claims 10
Claim · model-written summary
Basil rhizosphere bacteria had multiple biochemical and plant growth promoting properties.
- Taxon
- O. basilicum L. var.minimum
Ocimum basilicume0 - Outcome
- multiple biochemical and PGP propertiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizospheric bacteria of O. basilicum L. var.minimum have multiple biochemical and PGP properties”
Claim · model-written summary
Pseudomonas sp.P57 inoculation elicited the strongest drought responses in basil total phenolics, reduced glutathione, and malondialdehyde content.
- Taxon
- basilOcimum basilicume0
- Treatment
- inoculated with Pseudomonas sp.P57 isolatee0
- Interactor
- Pseudomonas sp.P57e0symbiont
- Outcome
- total phenolics, reduced glutathione, and malondialdehyde contente0
- Direction
- highere0
- Qualifier
- droughte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most intensive reactions on tested abiotic stressors -drought (higher total phenolics, reduced glutathione, and malondialdehyde content) and flooding (higher superoxide dismutase activity) -were from basil plants inoculated with Pseudomonas sp.P57 isolate, yet along with Azotobacter sp.isolate A13.”
Claim · model-written summary
Pseudomonas sp.P57 inoculation elicited the strongest flooded-condition superoxide dismutase response in basil.
- Taxon
- basilOcimum basilicume0
- Treatment
- inoculated with Pseudomonas sp.P57 isolatee0
- Interactor
- Pseudomonas sp.P57e0symbiont
- Outcome
- superoxide dismutase activitye0
- Direction
- highere0
- Qualifier
- floodinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flooding (higher superoxide dismutase activity) -were from basil plants inoculated with Pseudomonas sp.P57 isolate, yet along with Azotobacter sp.isolate A13.”
Claim · model-written summary
Azotobacter sp.isolate A13 also produced intensive basil stress responses.
- Taxon
- basilOcimum basilicume0
- Treatment
- Azotobacter sp.isolate A13e0
- Interactor
- Azotobacter sp.isolate A13e0symbiont
- Outcome
- reactions on tested abiotic stressorse0
- Direction
- most intensivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most intensive reactions on tested abiotic stressors -drought (higher total phenolics, reduced glutathione, and malondialdehyde content) and flooding (higher superoxide dismutase activity) -were from basil plants inoculated with Pseudomonas sp.P57 isolate, yet along with Azotobacter sp.isolate A13.”
Claim · model-written summary
A13 gave the highest number of germinated basil seeds, 96.0%.
- Taxon
- basilOcimum basilicumt0
- Treatment
- A13 isolatee0
- Interactor
- A13e0symbiont
- Outcome
- number of germinated seedse0
- Direction
- higheste0
- Value
- 96.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest number of germinated seeds was obtained with the A13 isolate (96.0%)”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Azotobacter isolates yielded the highest basil vigour indices, 7200.0% and 5628.0%.
- Taxon
- basilOcimum basilicumt0
- Treatment
- Azotobacter isolatese0
- Interactor
- Azotobacter isolatese0symbiont
- Outcome
- vigour indexe0
- Direction
- higheste0
- Value
- 7200.0%and 5628.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest response for vigour index was observed with Azotobacter isolates (7200.0%and 5628.0%)”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
In well-watered conditions, P57-inoculated basil mass was 34.2% higher than control.
- Taxon
- basilOcimum basilicume0
- Treatment
- inoculated with P57e0
- Interactor
- P57e0symbiont
- Outcome
- basil masse0
- Direction
- highere0
- Value
- 34.2%e0
- Qualifier
- well-watered conditionse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In well-watered conditions, basil mass inoculated with P57 was 34.2% higher than control.”
Claim · model-written summary
Under drought stress, A13-inoculated basil mass was 90% higher than control.
- Taxon
- basilOcimum basilicumt0
- Treatment
- inoculated with A13 isolatee0
- Interactor
- A13 isolatee0symbiont
- Outcome
- plant masse0
- Direction
- highere0
- Value
- 90%e0
- Qualifier
- drought-stressed conditionse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In drought-stressed conditions, plant mass inoculated with A13 isolate was 90% higher than control.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Under flood stress, Azotobacter inoculation increased basil mass by more than 100%.
- Taxon
- basilOcimum basilicumt0
- Treatment
- inoculated with Azotobactere0
- Interactor
- Azotobacter
Azotobactere0symbiont - Outcome
- plant masse0
- Direction
- increasede0
- Value
- more than 100%e0
- Qualifier
- flooded-stressed conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In flooded-stressed conditions, the plant mass inoculated with Azotobacter and Pseudomonas isolates increased by more than 100%.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Under flood stress, Pseudomonas inoculation increased basil mass by more than 100%.
- Taxon
- basilOcimum basilicumt0
- Treatment
- Pseudomonas isolatese0
- Interactor
- Pseudomonas isolatese0symbiont
- Outcome
- plant masse0
- Direction
- increasede0
- Value
- more than 100%e0
- Qualifier
- flooded-stressed conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In flooded-stressed conditions, the plant mass inoculated with Azotobacter and Pseudomonas isolates increased by more than 100%.”
t0“basil (Ocimum basilicum L.)”
The same questions in other papers
Azotobacter · growth · Ocimum basilicum (basil)Results agree
1 paper in the same direction as this paper
- positive
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.