Paper · 2023 · Egyptian Journal of Horticulture

Rhizobium Enhanced Drought Stress Tolerance in Green Bean Plants Through Improving Physiological and Biochemical Biomarkers

Nora AbdelMotlb; Salama Abd El-Hady; Faten Abdel-all; et al.

7
claims
13
verbatim quotes
4
citations
3
research areas
✓
Open access

Abstract

Due to global warming and climate change, drought is considered one of the major abiotic stressful conditions that causes numerous morphological, physiological, and biochemical changes that limit the plant growth and productivity. The enhancement of drought tolerance by the application of plant growth-promoting rhizobacteria has been progressively documented. Therefore, the present study was carried out to examine the potential role of Rhizobium leguminosarum biovar. Phaseoli in attenuating the adverse effects of water deficiency (80, and 60% of the estimated crop evapotranspiration) on growth, yield and quality and some biochemical and physiological parameters of green bean plants cv. Valentino. The experimental design was a randomized complete block design with three replications. The obtained results revealed that increasing water deficit severity resulted in decreases in plant growth characteristics, leaf nutrient content, SPAD readings, leaf relative water content (LRWC), leaf membrane stability index (LMSI) and yield components, as well as induced increments in proline content, catalase, peroxidase, and superoxide dismutase activities. However, application of Rhizobium leguminosarum considerably improved all growth and yield parameters and enhanced SPAD readings, RWC, MSI, proline content, and antioxidant enzyme activities. It could be concluded that Rhizobium leguminosarum inoculation could be used as a promising and sustainable strategy to cope with the adverse impacts of drought stress on green bean productivity in the forthcoming era of climate change.

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Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing water deficit reduced plant growth characteristics and yield components.

Taxon
green bean plantst0
Treatment
increasing water deficit severitye0
Outcome
plant growth characteristicse0
Direction
decreasese0

Not reportedComparator

Verbatim

e0

“increasing water deficit severity resulted in decreases in plant growth characteristics, leaf nutrient content, SPAD readings, leaf relative water content (LRWC), leaf membrane stability index (LMSI) and yield components”

✓ located verbatim in the source · abstract, characters 829–1049 · show in text ↑
t0

“Green Bean Plants”

✓ located verbatim in the source · title, characters 47–64 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing water deficit reduced yield components.

Taxon
green bean plantst0
Treatment
increasing water deficit severitye0
Outcome
yield componentse0
Direction
decreasese0

Not reportedComparator

Verbatim

e0

“increasing water deficit severity resulted in decreases in plant growth characteristics, leaf nutrient content, SPAD readings, leaf relative water content (LRWC), leaf membrane stability index (LMSI) and yield components”

✓ located verbatim in the source · abstract, characters 829–1049 · show in text ↑
t0

“Green Bean Plants”

✓ located verbatim in the source · title, characters 47–64 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing water deficit reduced leaf nutrient content, SPAD, relative water content and membrane stability.

Taxon
green bean plantst0
Treatment
increasing water deficit severitye0
Outcome
leaf nutrient content, SPAD readings, leaf relative water content (LRWC), leaf membrane stability index (LMSI)e0
Direction
decreasese0

Not reportedComparator

Verbatim

e0

“increasing water deficit severity resulted in decreases in plant growth characteristics, leaf nutrient content, SPAD readings, leaf relative water content (LRWC), leaf membrane stability index (LMSI) and yield components”

✓ located verbatim in the source · abstract, characters 829–1049 · show in text ↑
t0

“Green Bean Plants”

✓ located verbatim in the source · title, characters 47–64 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing water deficit raised proline content and antioxidant enzyme activities.

Taxon
green bean plantst0
Treatment
water deficit severitye0
Outcome
proline content, catalase, peroxidase, and superoxide dismutase activitiese0
Direction
incrementse0

Not reportedComparator

Verbatim

e0

“increasing water deficit severity resulted in decreases in plant growth characteristics, leaf nutrient content, SPAD readings, leaf relative water content (LRWC), leaf membrane stability index (LMSI) and yield components, as well as induced increments in proline content, catalase, peroxidase, and superoxide dismutase activities.”

✓ located verbatim in the source · abstract, characters 829–1159 · show in text ↑
t0

“Green Bean Plants”

✓ located verbatim in the source · title, characters 47–64 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rhizobium application improved growth and yield parameters.

Taxon
green bean plantst0
Treatment
application of Rhizobium leguminosarume0
Interactor
Rhizobium leguminosarumRhizobium leguminosarume0symbiont
Outcome
growth and yield parameterse0
Direction
improvede0

Not reportedComparator

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

Rhizobium leguminosarum
Rhizobium leguminosarum · Interactor · picture from its Wikimedia Commons categoryQaswarah 21 · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“application of Rhizobium leguminosarum considerably improved all growth and yield parameters and enhanced SPAD readings, RWC, MSI, proline content, and antioxidant enzyme activities.”

✓ located verbatim in the source · abstract, characters 1169–1351 · show in text ↑
t0

“Green Bean Plants”

✓ located verbatim in the source · title, characters 47–64 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rhizobium application enhanced SPAD, water content, membrane stability, proline and antioxidant enzyme activity.

Taxon
green bean plantst0
Treatment
application of Rhizobium leguminosarume0
Interactor
Rhizobium leguminosarumRhizobium leguminosarume0symbiont
Outcome
SPAD readings, RWC, MSI, proline content, and antioxidant enzyme activitiese0
Direction
enhancede0

Not reportedComparator

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

Rhizobium leguminosarum
Rhizobium leguminosarum · Interactor · picture from its Wikimedia Commons categoryQaswarah 21 · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“application of Rhizobium leguminosarum considerably improved all growth and yield parameters and enhanced SPAD readings, RWC, MSI, proline content, and antioxidant enzyme activities.”

✓ located verbatim in the source · abstract, characters 1169–1351 · show in text ↑
t0

“Green Bean Plants”

✓ located verbatim in the source · title, characters 47–64 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors propose Rhizobium inoculation to sustain green bean productivity under drought.

Taxon
green beane0
Interactor
Rhizobium leguminosarumRhizobium leguminosarume0symbiont
Outcome
cope with the adverse impacts of drought stress on green bean productivitye0

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

Rhizobium leguminosarum
Rhizobium leguminosarum · Interactor · picture from its Wikimedia Commons categoryQaswarah 21 · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Rhizobium leguminosarum inoculation could be used as a promising and sustainable strategy to cope with the adverse impacts of drought stress on green bean productivity”

✓ located verbatim in the source · abstract, characters 1379–1546 · show in text ↑

Rhizobium leguminosarum · yield · Phaseolus vulgaris (common bean)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

drought · physiology: water · Phaseolus vulgaris (common bean)Results differ

24 papers: 8 positive, 16 negative or no effect

15 papers in the same direction as this paper · 8 in the opposite direction

  1. negative
  2. positive
  3. positive

20 papers more in this group

See all 24 papers →

drought · growth · Phaseolus vulgaris (common bean)Results differ

65 papers: 6 positive, 59 negative or no effect

58 papers in the same direction as this paper · 6 in the opposite direction

  1. negative
  2. positive
  3. positive

61 papers more in this group

See all 65 papers →

drought · yield · Phaseolus vulgaris (common bean)Positive and negative results

105 papers: 10 positive, 95 negative or no effect

94 papers in the same direction as this paper · 10 in the opposite direction

  1. negative
  2. positive
  3. positive

101 papers more in this group

See all 105 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.