Paper · 2023 · Arid Land Research and Management

Characterization and utilization of multi-trait plant growth promoting rhizobacteria from arid soils of western Rajasthan for enhancing drought resilience in an arid legume

Ramesh Chand Kasana; Saritha Mohanram; Anandkumar Naorem; et al.

8
claims
14
verbatim quotes
2
citations
3
research areas
—
Not open access

Abstract

In the study, plant growth promoting rhizobacteria (PGPR) indigenous to arid western Rajasthan were isolated and screened for plant growth promoting (PGP) capabilities. Ten isolates showing multiple PGP activities were identified as Pseudomonas sp. G6-3, Staphylococcus sp. G6-4, Bacillus badius G8-6, Agrobacterium sp. G8-7, Bacillus pseudomycoides G10-1, Staphylococcus capitis subsp. capitis G11-4, Bacillus paralicheniformis G11-5, Bacillus subtilis G12-3, Stenotrophomonas pavanii G12-4, and Solibacillus isronensis G21-9. Physiological profiling of these isolates demonstrated them to be tolerant to drought (25% PEG-6000), high temperature (40 °C), alkalinity (pH 10.0), and salinity (4.5% NaCl). These PGPR significantly improved clusterbean seedling characteristics in moisture stress-induced hydroponic flask cultures and pots. PGPR inoculation of clusterbean in drought-induced pots significantly enhanced the plant dry weight by 15–33%, plant water potential by 5–8%, and the relative water content of leaves by 4–16%. There was also a significant reduction in the levels of anti-oxidant enzymes and proline in plant tissues under drought conditions, which indicated lower levels of stress experienced by the treated plants. These were translated into yield enhancements by 13–15% under rainfed conditions. The study demonstrates the ability of stress tolerant PGPR from arid western Rajasthan in enhancing drought resilience of arid legumes besides promoting their growth, and their potential utility in sustainable arid agriculture systems.

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Claims 8

Observationobservedoriginal resultmeasured

Claim · model-written summary

Ten rhizobacterial isolates had multiple plant growth promoting activities.

Outcome
multiple PGP activitiese0
Value
Ten isolatese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Ten isolates showing multiple PGP activities were identified as Pseudomonas sp. G6-3, Staphylococcus sp. G6-4, Bacillus badius G8-6, Agrobacterium sp. G8-7, Bacillus pseudomycoides G10-1, Staphylococcus capitis subsp. capitis G11-4, Bacillus paralicheniformis G11-5, Bacillus subtilis G12-3, Stenotrophomonas pavanii G12-4, and Solibacillus isronensis G21-9.”

✓ located verbatim in the source · abstract, characters 169–527 · show in text ↑
e1

“clusterbean seedling characteristics”

✓ located verbatim in the source · abstract, characters 738–774 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The isolates tolerated drought, high temperature, alkalinity and salinity.

Outcome
tolerant to droughte0
Value
25% PEG-6000e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Physiological profiling of these isolates demonstrated them to be tolerant to drought (25% PEG-6000), high temperature (40 °C), alkalinity (pH 10.0), and salinity (4.5% NaCl).”

✓ located verbatim in the source · abstract, characters 528–703 · show in text ↑
e1

“clusterbean seedling characteristics”

✓ located verbatim in the source · abstract, characters 738–774 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Rhizobacterial inoculation improved clusterbean seedling characteristics in moisture stress hydroponics and pots.

Treatment
PGPRe0
Outcome
clusterbean seedling characteristicse0
Direction
improvede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“These PGPR significantly improved clusterbean seedling characteristics in moisture stress-induced hydroponic flask cultures and pots.”

✓ located verbatim in the source · abstract, characters 704–837 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR increased clusterbean dry weight 15 to 33% in drought pots.

Treatment
PGPR inoculatione0
Interactor
PGPRe0symbiont
Outcome
plant dry weighte0
Direction
enhancede0
Value
15–33%e0
Setting
drought-induced potse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“PGPR inoculation of clusterbean in drought-induced pots significantly enhanced the plant dry weight by 15–33%, plant water potential by 5–8%, and the relative water content of leaves by 4–16%.”

✓ located verbatim in the source · abstract, characters 838–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR increased clusterbean water potential 5 to 8% in drought pots.

Treatment
PGPR inoculatione0
Interactor
PGPRe0symbiont
Outcome
plant water potentiale0
Direction
enhancede0
Value
5–8%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“PGPR inoculation of clusterbean in drought-induced pots significantly enhanced the plant dry weight by 15–33%, plant water potential by 5–8%, and the relative water content of leaves by 4–16%.”

✓ located verbatim in the source · abstract, characters 838–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR increased relative leaf water content 4 to 16% in drought pots.

Treatment
PGPR inoculatione0
Interactor
PGPRe0symbiont
Outcome
relative water content of leavese0
Direction
enhancede0
Value
4–16%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“PGPR inoculation of clusterbean in drought-induced pots significantly enhanced the plant dry weight by 15–33%, plant water potential by 5–8%, and the relative water content of leaves by 4–16%.”

✓ located verbatim in the source · abstract, characters 838–1030 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR lowered antioxidant enzyme and proline levels under drought.

Treatment
PGPRe1
Interactor
plant growth promoting rhizobacteriat0symbiont
Outcome
levels of anti-oxidant enzymes and prolinee0
Direction
reductione0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“There was also a significant reduction in the levels of anti-oxidant enzymes and proline in plant tissues under drought conditions, which indicated lower levels of stress experienced by the treated plants.”

✓ located verbatim in the source · abstract, characters 1031–1236 · show in text ↑
t0

“plant growth promoting rhizobacteria from arid soils of western Rajasthan for enhancing drought resilience in an arid legume”

✓ located verbatim in the source · title, characters 48–172 · show in text ↑
e1

“These PGPR significantly improved clusterbean seedling characteristics in moisture stress-induced hydroponic flask cultures and pots.”

✓ located verbatim in the source · abstract, characters 704–837 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PGPR increased yield 13 to 15% under rainfed conditions.

Treatment
PGPRe1
Interactor
plant growth promoting rhizobacteriat0symbiont
Outcome
yielde0
Direction
enhancementse0
Value
13–15%e0
Setting
rainfed conditionse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cyamopsis tetragonoloba
Cyamopsis tetragonoloba · Taxon · picture from its Wikimedia Commons categoryTon Rulkens · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“These were translated into yield enhancements by 13–15% under rainfed conditions.”

✓ located verbatim in the source · abstract, characters 1237–1318 · show in text ↑
t0

“plant growth promoting rhizobacteria from arid soils of western Rajasthan for enhancing drought resilience in an arid legume”

✓ located verbatim in the source · title, characters 48–172 · show in text ↑
e1

“These PGPR significantly improved clusterbean seedling characteristics in moisture stress-induced hydroponic flask cultures and pots.”

✓ located verbatim in the source · abstract, characters 704–837 · show in text ↑

inoculation · yield · Cyamopsis tetragonoloba (cluster bean)Positive and negative results

30 papers: 29 positive, 1 negative or no effect

28 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

26 papers more in this group

See all 30 papers →

inoculation · physiology: osmolytes · Cyamopsis tetragonoloba (cluster bean)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

inoculation · growth · Cyamopsis tetragonoloba (cluster bean)Results agree

17 papers: 17 positive, 0 negative or no effect

16 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

13 papers more in this group

See all 17 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.