Paper · 2022 · The 2nd International Laayoune Forum on Biosaline Agriculture

Autochthonous Biostimulants as a Promising Biological Tool to Promote Lettuce Growth and Development under Salinity Conditions

Redouane Ouhaddou; Raja Ben-Laouane; Aiman Slimani; et al.

7
claims
14
verbatim quotes
2
citations
3
research areas
✓
Open access · cc-by

Abstract

An adapted sustainable management program was used to evaluate lettuce tolerance to salt stress using autochthonous biostimulants (arbuscular mycorrhizal fungi (AMF), plant growth-promoting rhizobacteria (PGPR), and compost). Salinity harmed plant growth, root colonization, and physiology. However, biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions.

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 7

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF treatments improved lettuce biomass under stressed conditions by 120% relative to non-inoculated and compost-free controls.

Taxon
lettuceLactuca sativae0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
biomasse0
Direction
improvede0
Value
120%e0
Qualifier
under stressed conditionse0
Comparator
non-inoculated and compost-free controlse0

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e0

“biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions”

✓ located verbatim in the source · abstract, characters 300–660 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR treatments improved lettuce biomass under stressed conditions by 50% relative to non-inoculated and compost-free controls.

Taxon
lettuceLactuca sativae0
Treatment
PGPR treatmentse0
Interactor
PGPRe0symbiont
Outcome
biomasse0
Direction
improvede0
Value
50%e0
Qualifier
under stressed conditionse0
Comparator
non-inoculated and compost-free controlse0

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e0

“biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions”

✓ located verbatim in the source · abstract, characters 300–660 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF treatments improved stomatal conductance of stressed lettuce by 60% relative to controls.

Taxon
lettuceLactuca sativae0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
stomatal conductancee0
Direction
improvede0
Value
60%e0
Qualifier
under stressed conditionse0
Comparator
non-inoculated and compost-free controlse0

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e0

“biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions”

✓ located verbatim in the source · abstract, characters 300–660 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR treatments improved stomatal conductance of stressed lettuce by 20% relative to controls.

Taxon
lettuceLactuca sativae0
Treatment
PGPR treatmentse0
Interactor
PGPRe0symbiont
Outcome
stomatal conductancee0
Direction
improvede0
Value
20%e0
Qualifier
under stressed conditionse0
Comparator
non-inoculated and compost-free controlse0

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e0

“biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions”

✓ located verbatim in the source · abstract, characters 300–660 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF treatments improved chlorophyll fluorescence of stressed lettuce by 1.5% relative to controls.

Taxon
lettuceLactuca sativae0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
chlorophyll fluorescencee0
Direction
improvede0
Value
1.5%e0
Qualifier
under stressed conditionse0
Comparator
non-inoculated and compost-free controlse0

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e0

“biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions”

✓ located verbatim in the source · abstract, characters 300–660 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PGPR treatments improved chlorophyll fluorescence of stressed lettuce by 1.3% relative to controls.

Taxon
lettuceLactuca sativae0
Treatment
PGPR treatmentse0
Interactor
PGPRe0symbiont
Outcome
chlorophyll fluorescencee0
Direction
improvede0
Value
1.3%e0
Qualifier
under stressed conditionse0
Comparator
non-inoculated and compost-free controlse0

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e0

“biostimulants application, especially AMF and PGPR treatments, significantly improved lettuce growth and salinity tolerance (120% and 50%, respectively, for biomass; 60% and 20%, respectively, for stomatal conductance; and 1.5% and 1.3%, respectively, for chlorophyll fluorescence) compared to non-inoculated and compost-free controls under stressed conditions”

✓ located verbatim in the source · abstract, characters 300–660 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salinity harmed lettuce plant growth, root colonization and physiology.

Taxon
LettuceLactuca sativat0
Treatment
Salinitye1
Outcome
plant growth, root colonization, and physiologye1
Direction
harmede1

Not reportedComparator

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

t0

“Promote Lettuce Growth”

✓ located verbatim in the source · title, characters 62–84 · show in text ↑
e1

“Salinity harmed plant growth, root colonization, and physiology”

✓ located verbatim in the source · abstract, characters 226–289 · show in text ↑

mycorrhiza · physiology: gas exchange · Lactuca sativa (garden lettuce)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
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inoculation · physiology: gas exchange · Lactuca sativa (garden lettuce)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

1 paper more in this group

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mycorrhiza · physiology: photosynthesis · Lactuca sativa (garden lettuce)Positive and negative results

7 papers: 6 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

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mycorrhiza · growth · Lactuca sativa (garden lettuce)Positive and negative results

27 papers: 24 positive, 3 negative or no effect

23 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

23 papers more in this group

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inoculation · growth · Lactuca sativa (garden lettuce)Positive and negative results

111 papers: 97 positive, 14 negative or no effect

96 papers in the same direction as this paper · 12 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
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salinity · disease · Lactuca sativa (garden lettuce)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
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inoculation · physiology: photosynthesis · Lactuca sativa (garden lettuce)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

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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.