Paper · 2021 · African Journal of Agricultural Research

The preventive impact of vermicompost on bell pepper (Capsicum annuum L.) salinity resistance: An evaluation

Ahmadi Naser; Akbari Elnaz

14
claims
28
verbatim quotes
8
citations
2
research areas
✓
Open access · cc-by

Abstract

This work aims to identify the impacts of vermicompost leachate (VCL) toward its salt resistance stress in plants. Young Capsicum annuum L seedlings were subjected to salinity (160 mM NaCl added to a nutrient solution) over a course of seven days during or following the adding of 7 mL L−1 VCL. The exposure to salt stress resulted in a notable decrease of dry and fresh leaf weights, K+ concentrations, and leaf water content; whereas leaf and root Na+ concentrations were remarkably increased. Furthermore, the salt stress yielded reduced instantaneous transpiration, net photosynthesis, maximum PSII photochemistry efficiency, stomatal conductance (gs) in the state of photochemical quenching, dark adaptation, and photochemical efficiency of PSII (ΦPSII). Moreover, VCL application in the state of salt stress led to an increase of leaf fresh weight and gs, while the leaf osmotic potential remained consistent regardless of the proline content increase seen in the salt-treated plants. Meanwhile, it minimized the Na+ concentration in the leaves by 21.4%, and increased in the roots by 16.9%. Accordingly, a pre-treatment regiment with VCL and the ensuing salt stress yielded higher efficiency compared to its concomitant application with salt stress due to the pre-treatment recording the highest osmotic adjustment. VCL pre-treatment resulted in sugar concentration in the roots (9.3 µmol g−1 FW) and the maximum level of proline in the leaves (51 µmol g−1 FW). Additionally, the fluorescence-linked parameter reaffirmed superior outcomes for the PSII stability and efficiency in the case of VCL pre-treatment on salt-stressed plants in contrast to those subjected to concurrent VCL salt stress exposure. Hence, VCL is proven to be an effective defense medium towards enhancing the property of salt-stress resistance in bell peppers. Key words: Vermicompost leachate (VCL), priming, bell pepper, Sodium, NaCl.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 14

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress decreased leaf fresh and dry weight.

Taxon
Capsicum annuum LCapsicum annuumt0
Organ / stage
leafe0
Treatment
salt stresse0
Outcome
dry and fresh leaf weightse0
Direction
decreasee0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“The exposure to salt stress resulted in a notable decrease of dry and fresh leaf weights”

✓ located verbatim in the source · abstract, characters 295–383 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress decreased potassium concentration and leaf water content.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
salt stresse0
Outcome
K+ concentrations, and leaf water contente0
Direction
decreasee0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“The exposure to salt stress resulted in a notable decrease of dry and fresh leaf weights, K+ concentrations, and leaf water content”

✓ located verbatim in the source · abstract, characters 295–426 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress increased leaf sodium concentration.

Taxon
Capsicum annuum LCapsicum annuumt0
Outcome
leaf and root Na+ concentrationse0
Direction
increasede0

Not reportedTreatmentComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“leaf and root Na+ concentrations were remarkably increased”

✓ located verbatim in the source · abstract, characters 436–494 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress reduced transpiration, photosynthesis and PSII efficiency.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
salt stresse0
Outcome
instantaneous transpiration, net photosynthesis, maximum PSII photochemistry efficiencye0
Direction
reducede0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“salt stress yielded reduced instantaneous transpiration, net photosynthesis, maximum PSII photochemistry efficiency”

✓ located verbatim in the source · abstract, characters 513–628 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salt stress reduced stomatal conductance, photochemical quenching and PSII efficiency.

Taxon
Capsicum annuum LCapsicum annuumt0
Outcome
stomatal conductance (gs) in the state of photochemical quenching, dark adaptation, and photochemical efficiency of PSII (ΦPSII)e0

Not reportedTreatmentComparatorDirection

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“stomatal conductance (gs) in the state of photochemical quenching, dark adaptation, and photochemical efficiency of PSII (ΦPSII)”

✓ located verbatim in the source · abstract, characters 630–758 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Vermicompost leachate increased fresh leaf weight and stomatal conductance under salt stress.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
VCL applicatione0
Outcome
leaf fresh weight and gse0
Direction
increasee0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“VCL application in the state of salt stress led to an increase of leaf fresh weight and gs”

✓ located verbatim in the source · abstract, characters 770–860 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Leaf osmotic potential remained consistent with leachate under salt stress.

Taxon
Capsicum annuum LCapsicum annuumt0
Outcome
leaf osmotic potentiale0
Direction
remained consistente0

Not reportedTreatmentComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“leaf osmotic potential remained consistent regardless of the proline content increase seen in the salt-treated plants”

✓ located verbatim in the source · abstract, characters 872–989 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Proline content increased in salt-treated plants.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
salt-treatede0
Outcome
proline contente0
Direction
increasee0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“proline content increase seen in the salt-treated plants”

✓ located verbatim in the source · abstract, characters 933–989 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Leachate reduced leaf sodium concentration by 21.4%.

Taxon
Capsicum annuum LCapsicum annuumt0
Outcome
Na+ concentration in the leavese0
Direction
minimizede0
Value
21.4%e0

Not reportedTreatmentComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“it minimized the Na+ concentration in the leaves by 21.4%”

✓ located verbatim in the source · abstract, characters 1002–1059 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Leachate increased root sodium concentration by 16.9%.

Taxon
Capsicum annuum LCapsicum annuumt0
Outcome
rootse0
Direction
increasede0
Value
16.9%e0

Not reportedTreatmentComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“increased in the roots by 16.9%”

✓ located verbatim in the source · abstract, characters 1065–1096 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Leachate pretreatment gave the highest osmotic adjustment relative to simultaneous application.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
pre-treatmente0
Outcome
osmotic adjustmente0
Direction
higheste0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“pre-treatment recording the highest osmotic adjustment”

✓ located verbatim in the source · abstract, characters 1267–1321 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Leachate pretreatment yielded root sugar concentration of 9.3 µmol g−1 FW.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
VCL pre-treatmente0
Outcome
sugar concentration in the rootse0
Value
9.3 µmol g−1 FWe0

Not reportedComparatorDirection

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“VCL pre-treatment resulted in sugar concentration in the roots (9.3 µmol g−1 FW)”

✓ located verbatim in the source · abstract, characters 1323–1403 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Leachate pretreatment yielded the maximum leaf proline level of 51 µmol g−1 FW.

Taxon
Capsicum annuum LCapsicum annuumt0
Outcome
maximum level of proline in the leavese0
Direction
maximume0
Value
51 µmol g−1 FWe0

Not reportedTreatmentComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“the maximum level of proline in the leaves (51 µmol g−1 FW)”

✓ located verbatim in the source · abstract, characters 1408–1467 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pretreatment gave superior PSII stability and efficiency to concurrent leachate and salt exposure.

Taxon
Capsicum annuum LCapsicum annuumt0
Treatment
VCL pre-treatmente0
Outcome
PSII stability and efficiencye0
Direction
superiore0
Comparator
concurrent VCL salt stress exposuree0

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Capsicum annuum L.”

✓ located verbatim in the source · title, characters 54–72 · show in text ↑
e0

“superior outcomes for the PSII stability and efficiency in the case of VCL pre-treatment on salt-stressed plants in contrast to those subjected to concurrent VCL salt stress exposure”

✓ located verbatim in the source · abstract, characters 1528–1710 · show in text ↑

salinity · physiology: osmolytes · Capsicum annuum (sweet pepper)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

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

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

fertilization · physiology: gas exchange · Capsicum annuum (sweet pepper)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive
See all 4 papers →

fertilization · quality: sugar starch · Capsicum annuum (sweet pepper)Positive and negative results

13 papers: 12 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

salinity · physiology: photosynthesis · Capsicum annuum (sweet pepper)Results agree

4 papers: 0 positive, 4 negative or no effect

3 papers in the same direction as this paper

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

fertilization · physiology: photosynthesis · Capsicum annuum (sweet pepper)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 →

salinity · physiology: water · Capsicum annuum (sweet pepper)Results agree

13 papers: 0 positive, 13 negative or no effect

12 papers in the same direction as this paper

  1. no effect
  2. negative
  3. negative

9 papers more in this group

See all 13 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.