Paper · 2025 · BMC Plant Biology

The biomass and health-enhancing qualities of lettuce are amplified through the inoculation of arbuscular mycorrhizal fungi

Ahlem Zrig; Emad A. Alsherif; Abeer S. Aloufi; et al.

15
claims
45
verbatim quotes
11
citations
4
research areas
✓
Open access · cc-by-nc-nd

Abstract

With lettuce being one of the most important green crops in the world, it is important to improve its growth and nutritive value. To this end, arbuscular mycorrhizal fungus (AMF) application to improve nutrient-dense foods and the production of bioactive compounds in plants is a promising approach. AMF is applied to increase plant growth, primary metabolism, mineral profile and accumulation of secondary (phenols, flavonoids) metabolites. AMF treated plants showed increased biomass accumulation by 38.8%. This increase was in line with increased levels of photosynthesis rate and the total chlorophyll content by approximately 28.8%, respectively. In nutritive value, AMF increased mineral profile, vitamin contents and carbohydrate as indicated by D-mannose, L-galactose, and vitamin E (p < 0.05) by approximately 32.7%, 25%, and 46.6%, respectively. The AMF-treated lettuce's proximate composition revealed considerably greater levels of total protein (7.8%), as well as crude fiber, ash, and carbohydrates (about 7%) compared to control samples (p < 0.05). Furthermore, AMF inoculation increased levels of antioxidants, essential amino acids, and unsaturated fatty acids. It increased the levels of antioxidants such as alpha and beta carotene, polyphenols, which was correlated with increased phenylalanine ammonia-lyase (PAL) enzyme activity. Treatment with AMF resulted in an increase of more than 76% of the detected amino acids, with the highest increment observed for isoleucine, methionine and biosynthetic enzyme (cystathionine γ-synthase (CGS)), and which were 200%, 270.2%, and 153.5%, respectively. Increased bioactive accumulation also resulted in improved antioxidant and antidiabetic and antibacterial activities against a variety of pathogenic microorganisms. The findings indicate that the AMF treatment is a feasible method for enhancing lettuce's biological characteristics and health-promoting attributes.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 15

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF treated lettuce accumulated 38.8% more biomass.

Taxon
lettuceLactuca sativat0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
biomass accumulatione0
Direction
increasede0
Value
38.8%e0

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

e0

“AMF treated plants showed increased biomass accumulation by 38.8%.”

✓ located verbatim in the source · abstract, characters 442–508 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF treatment increased lettuce photosynthesis rate and total chlorophyll content by approximately 28.8%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe1
Interactor
arbuscular mycorrhizal funguse1symbiont
Outcome
photosynthesis rate and the total chlorophyll contente0
Direction
increasede0
Value
28.8%e0

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

e0

“This increase was in line with increased levels of photosynthesis rate and the total chlorophyll content by approximately 28.8%, respectively.”

✓ located verbatim in the source · abstract, characters 509–651 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF raised the lettuce mineral profile by about 32.7%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
mineral profilee0
Direction
increasede0
Value
32.7%e0

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

e0

“AMF increased mineral profile, vitamin contents and carbohydrate as indicated by D-mannose, L-galactose, and vitamin E (p < 0.05) by approximately 32.7%, 25%, and 46.6%, respectively.”

✓ located verbatim in the source · abstract, characters 672–855 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF raised lettuce vitamin contents by about 25%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
vitamin contentse0
Direction
increasede0
Value
25%e0

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

e0

“AMF increased mineral profile, vitamin contents and carbohydrate as indicated by D-mannose, L-galactose, and vitamin E (p < 0.05) by approximately 32.7%, 25%, and 46.6%, respectively.”

✓ located verbatim in the source · abstract, characters 672–855 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF raised lettuce carbohydrate content by about 46.6%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
carbohydratee0
Direction
increasede0
Value
46.6%e0

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

e0

“AMF increased mineral profile, vitamin contents and carbohydrate as indicated by D-mannose, L-galactose, and vitamin E (p < 0.05) by approximately 32.7%, 25%, and 46.6%, respectively.”

✓ located verbatim in the source · abstract, characters 672–855 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF treated lettuce had greater total protein than control samples.

Taxon
lettuceLactuca sativae0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
total proteine0
Direction
greatere0
Value
7.8%e0
Comparator
control samplese0

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

e0

“The AMF-treated lettuce's proximate composition revealed considerably greater levels of total protein (7.8%), as well as crude fiber, ash, and carbohydrates (about 7%) compared to control samples (p < 0.05).”

✓ located verbatim in the source · abstract, characters 856–1063 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

AMF treated lettuce had greater crude fiber, ash and carbohydrate content than controls.

Taxon
lettuceLactuca sativae0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
crude fiber, ash, and carbohydratese0
Direction
greatere0
Value
about 7%e0
Comparator
control samplese0

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

e0

“The AMF-treated lettuce's proximate composition revealed considerably greater levels of total protein (7.8%), as well as crude fiber, ash, and carbohydrates (about 7%) compared to control samples (p < 0.05).”

✓ located verbatim in the source · abstract, characters 856–1063 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF inoculation increased lettuce antioxidants, essential amino acids and unsaturated fatty acids.

Taxon
lettuceLactuca sativat0
Treatment
AMF inoculatione0
Interactor
AMFe0symbiont
Outcome
antioxidants, essential amino acids, and unsaturated fatty acidse0
Direction
increasede0

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

e0

“Furthermore, AMF inoculation increased levels of antioxidants, essential amino acids, and unsaturated fatty acids.”

✓ located verbatim in the source · abstract, characters 1064–1178 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher carotene and polyphenol levels under AMF were correlated with higher PAL enzyme activity.

Taxon
lettuceLactuca sativat0
Treatment
AMFe1
Interactor
arbuscular mycorrhizal funguse1symbiont
Gene
phenylalanine ammonia-lyase (PAL)e0
Outcome
alpha and beta carotene, polyphenolse0
Direction
increasede0

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

e0

“It increased the levels of antioxidants such as alpha and beta carotene, polyphenols, which was correlated with increased phenylalanine ammonia-lyase (PAL) enzyme activity.”

✓ located verbatim in the source · abstract, characters 1179–1351 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF treatment increased more than 76% of the detected lettuce amino acids.

Taxon
lettuceLactuca sativat0
Treatment
AMFe0
Interactor
AMFe0symbiont
Outcome
detected amino acidse0
Direction
increasee0
Value
more than 76%e0

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

e0

“Treatment with AMF resulted in an increase of more than 76% of the detected amino acids, with the highest increment observed for isoleucine, methionine and biosynthetic enzyme (cystathionine γ-synthase (CGS)), and which were 200%, 270.2%, and 153.5%, respectively.”

✓ located verbatim in the source · abstract, characters 1352–1616 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF treatment increased lettuce isoleucine by 200%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe1
Interactor
arbuscular mycorrhizal funguse1symbiont
Outcome
isoleucinee0
Direction
incremente0
Value
200%e0

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

e0

“with the highest increment observed for isoleucine, methionine and biosynthetic enzyme (cystathionine γ-synthase (CGS)), and which were 200%, 270.2%, and 153.5%, respectively.”

✓ located verbatim in the source · abstract, characters 1441–1616 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF treatment increased lettuce methionine by 270.2%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe1
Interactor
arbuscular mycorrhizal funguse1symbiont
Outcome
methioninee0
Direction
incremente0
Value
270.2%e0

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

e0

“with the highest increment observed for isoleucine, methionine and biosynthetic enzyme (cystathionine γ-synthase (CGS)), and which were 200%, 270.2%, and 153.5%, respectively.”

✓ located verbatim in the source · abstract, characters 1441–1616 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF treatment increased lettuce cystathionine γ-synthase by 153.5%.

Taxon
lettuceLactuca sativat0
Treatment
AMFe1
Interactor
arbuscular mycorrhizal funguse1symbiont
Gene
cystathionine γ-synthase (CGS)e0
Outcome
biosynthetic enzymee0
Direction
incremente0
Value
153.5%e0

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

e0

“with the highest increment observed for isoleucine, methionine and biosynthetic enzyme (cystathionine γ-synthase (CGS)), and which were 200%, 270.2%, and 153.5%, respectively.”

✓ located verbatim in the source · abstract, characters 1441–1616 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF associated bioactive accumulation improved antioxidant, antidiabetic and antibacterial activities.

Taxon
lettuceLactuca sativat0
Treatment
AMFe1
Interactor
pathogenic microorganismse0pathogen
Outcome
antioxidant and antidiabetic and antibacterial activitiese0
Direction
improvede0
Qualifier
Increased bioactive accumulatione0

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

e0

“Increased bioactive accumulation also resulted in improved antioxidant and antidiabetic and antibacterial activities against a variety of pathogenic microorganisms.”

✓ located verbatim in the source · abstract, characters 1617–1781 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors regard AMF treatment as feasible for improving lettuce biological and health promoting properties.

Taxon
lettuceLactuca sativae0
Treatment
AMF treatmente0
Interactor
AMFe0symbiont
Outcome
enhancing lettuce's biological characteristics and health-promoting attributese0

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

e0

“The findings indicate that the AMF treatment is a feasible method for enhancing lettuce's biological characteristics and health-promoting attributes.”

✓ located verbatim in the source · abstract, characters 1782–1931 · show in text ↑
t0

“lettuce”

✓ located verbatim in the source · title, characters 46–53 · show in text ↑
e1

“arbuscular mycorrhizal fungus (AMF) application”

✓ located verbatim in the source · abstract, characters 143–190 · show in text ↑

mycorrhiza · quality: phytochemicals · Lactuca sativa (garden lettuce)Results differ

11 papers: 10 positive, 1 negative or no effect

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

  1. positive
  2. positive
  3. negative

7 papers more in this group

See all 11 papers →

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

3 papers more in this group

See all 7 papers →

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. positive
  2. no effect
  3. no effect

23 papers more in this group

See all 27 papers →

mycorrhiza · physiology: enzyme activity · Lactuca sativa (garden lettuce)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

mycorrhiza · quality: protein · Lactuca sativa (garden lettuce)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 →

mycorrhiza · molecular: metabolites · Lactuca sativa (garden lettuce)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 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.