Abstract
Cold-tolerant plant growth-promoting rhizobacteria (PGPR) are of immense agronomic importance due to the fact that the winter season crop growing cycle is subject to varying spells of low temperatures and such PGPRs are metabolically functional at cold conditions. Thirty-five (35) rhizobacterial isolates were isolated from lentil rhizospheric soil, six isolates showing maximum exponential growth at both 10 and 15°C after 24 h were selected and characterized belonging to genera Bacillus and Pseudomonas. Production of indole acetic acid (IAA) ranged from 12.7-17.5 µgml-1 at 10°C to 18.4-20.4 μg/ml at 15°C. At 15°C, an isolate J-17 was found to be strong HCN producer whereas at 10°C, only two isolates: J-26 and J-30 were moderate producers. P-solubilizion at 15°C, ranged from 62.5 - 77.2 µgml-1. However, at 10°C none of the isolates solubilized P. At 15°C, catechol type siderophore production ranged from 523.4 - 606.1 µgml-1. On the basis of the PGP traits, four isolates J-3, J-17, J-18 and J-30 were selected for evaluation under field conditions of lentil at research farm of PAU, Ludhiana, Punjab, India. Coinoculation exhibited a significant increase in nodule number, nodule dry weight, plant and root dry weight, chlorophyll and leghaemoglobin content over Rhizobium alone. Application of J-3, J-17, J-18 and J-30 along with Rhizobium further enhanced the grain yield (1.8, 4.4, 3 and 1.4%). Key words: HCN production, indole acetic acid, siderophore, P-solubilization.
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Claims 14
Claim · model-written summary
The selected rhizobacteria produced IAA at 10°C in a range of 12.7-17.5 µgml-1.
- Taxon
- lentil
Lens culinarist0 - Interactor
- rhizobacterial isolatese1symbiont
- Outcome
- Production of indole acetic acid (IAA)e0
- Value
- 12.7-17.5 µgml-1e0
- Qualifier
- 10°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of indole acetic acid (IAA) ranged from 12.7-17.5 µgml-1 at 10°C”
t0“lentil”
e1“rhizobacterial isolates were isolated from lentil rhizospheric soil”
Claim · model-written summary
The selected rhizobacteria produced IAA at 15°C in a range of 18.4-20.4 μg/ml.
- Taxon
- lentilLens culinarist0
- Interactor
- rhizobacterial isolatese2symbiont
- Outcome
- indole acetic acid (IAA)e1
- Value
- 18.4-20.4 μg/mle0
- Qualifier
- 15°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“18.4-20.4 μg/ml at 15°C”
t0“lentil”
e1“Production of indole acetic acid (IAA)”
e2“rhizobacterial isolates were isolated from lentil rhizospheric soil”
Claim · model-written summary
J-17 strongly produced HCN at 15°C.
- Taxon
- lentilLens culinarist0
- Interactor
- J-17e0symbiont
- Outcome
- HCN producere0
- Qualifier
- 15°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 15°C, an isolate J-17 was found to be strong HCN producer”
t0“lentil”
Claim · model-written summary
J-26 and J-30 were moderate HCN producers at 10°C.
- Taxon
- lentilLens culinarist0
- Interactor
- J-26 and J-30e0symbiont
- Outcome
- moderate producerse0
- Qualifier
- 10°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 10°C, only two isolates: J-26 and J-30 were moderate producers”
t0“lentil”
Claim · model-written summary
P solubilization at 15°C ranged from 62.5 to 77.2 µgml-1.
- Taxon
- lentilLens culinarist0
- Outcome
- P-solubilizione0
- Value
- 62.5 - 77.2 µgml-1e0
- Qualifier
- 15°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P-solubilizion at 15°C, ranged from 62.5 - 77.2 µgml-1”
t0“lentil”
Claim · model-written summary
No isolate solubilized P at 10°C.
- Taxon
- lentilLens culinarist0
- Outcome
- none of the isolates solubilized Pe0
- Qualifier
- 10°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 10°C none of the isolates solubilized P”
t0“lentil”
Claim · model-written summary
Catechol siderophore production at 15°C ranged from 523.4 to 606.1 µgml-1.
- Taxon
- lentilLens culinarist0
- Outcome
- catechol type siderophore productione0
- Value
- 523.4 - 606.1 µgml-1e0
- Qualifier
- 15°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 15°C, catechol type siderophore production ranged from 523.4 - 606.1 µgml-1”
t0“lentil”
Claim · model-written summary
Coinoculation significantly increased nodule number and nodule dry weight over Rhizobium alone.
- Taxon
- lentilLens culinarist0
- Treatment
- Coinoculatione0
- Outcome
- nodule number, nodule dry weighte0
- Direction
- increasee0
- Comparator
- Rhizobium alonee0
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coinoculation exhibited a significant increase in nodule number, nodule dry weight, plant and root dry weight, chlorophyll and leghaemoglobin content over Rhizobium alone”
t0“lentil”
Claim · model-written summary
Coinoculation significantly increased plant and root dry weight over Rhizobium alone.
- Taxon
- lentilLens culinarist0
- Treatment
- Coinoculatione0
- Outcome
- plant and root dry weighte0
- Direction
- increasee0
- Comparator
- Rhizobium alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coinoculation exhibited a significant increase in nodule number, nodule dry weight, plant and root dry weight, chlorophyll and leghaemoglobin content over Rhizobium alone”
t0“lentil”
Claim · model-written summary
Coinoculation significantly increased chlorophyll and leghaemoglobin content over Rhizobium alone.
- Taxon
- lentilLens culinarist0
- Treatment
- Coinoculatione0
- Outcome
- chlorophyll and leghaemoglobin contente0
- Direction
- increasee0
- Comparator
- Rhizobium alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coinoculation exhibited a significant increase in nodule number, nodule dry weight, plant and root dry weight, chlorophyll and leghaemoglobin content over Rhizobium alone”
t0“lentil”
Claim · model-written summary
J-3 with Rhizobium enhanced lentil grain yield by 1.8%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of J-3, J-17, J-18 and J-30 along with Rhizobium further enhanced the grain yield (1.8, 4.4, 3 and 1.4%)”
t0“lentil”
e1“1.8, 4.4, 3 and 1.4%”
Claim · model-written summary
J-17 with Rhizobium enhanced lentil grain yield by 4.4%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of J-3, J-17, J-18 and J-30 along with Rhizobium further enhanced the grain yield (1.8, 4.4, 3 and 1.4%)”
t0“lentil”
e1“1.8, 4.4, 3 and 1.4%”
Claim · model-written summary
J-18 with Rhizobium enhanced lentil grain yield by 3%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of J-3, J-17, J-18 and J-30 along with Rhizobium further enhanced the grain yield (1.8, 4.4, 3 and 1.4%)”
t0“lentil”
e1“3 and 1.4%”
Claim · model-written summary
J-30 with Rhizobium enhanced lentil grain yield by 1.4%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of J-3, J-17, J-18 and J-30 along with Rhizobium further enhanced the grain yield (1.8, 4.4, 3 and 1.4%)”
t0“lentil”
e1“3 and 1.4%”
The same questions in other papers
inoculation · Rhizobium · Lens culinaris (lentil)Results agree
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