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“decrease in density”

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Organism: Lactuca sativa ✕

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At 0.1 to 1.0μL L-1 ethylene, lettuce photosynthesis and transpiration rates did not decrease across tested photon flux densities.

Taxon: lettuceLactuca sativae1
Treatment: 0.1 to 1.0μL L-1 of ethylenee1
Outcome: rates of lettuce plante1
Direction: no decreasese1
Qualifier: under any photosynthetic photon flux density (130, 270, and 380μmol m-2 s-1)e1

Not reportedComparator

Verbatim

t0
“Lettuce”
✓ located verbatim in the source · title, characters 97–104

e1
“no decreases in the rates of lettuce plant were observed at 0.1 to 1.0μL L-1 of ethylene under any photosynthetic photon flux density (130, 270, and 380μmol m-2 s-1)”
✓ located verbatim in the source · abstract, characters 417–582

Title

Studies on Trace Contaminant Accumulated in Closed Systems. Effects of Ethylene on the Growth of Lettuce.

Akira TANI; Takao SAITO; Makoto KIYOTA; et al. Seibutsu kankyō chōsetsu/Seibutsu kankyou chousetsu 1996. doi:10.2525/ecb1963.34.37

Other claims from this paper (7)

Association Lettuce absorbed ethylene, with absorption increasing as ethylene concentration rose.
Observation Lettuce did not absorb ethylene under dark conditions.
Intervention effect Lettuce cultivated at 0.5μL L-1 ethylene for 10 days developed epinasty and chlorosis.
Intervention effect At 0.5μL L-1 ethylene for 10 days, lettuce leaf expansion was inhibited.
Intervention effect At 0.1μL L-1 ethylene, lettuce leaf expansion was significantly inhibited.
Intervention effect Growth rate was slightly lower in ethylene exposed lettuce than in ethylene free air.
Recommendation The authors estimated the allowable ethylene level for lettuce at about 0.1μL L-1.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The symbiosis was not affected by UV-B treatment.

Taxon: LettuceLactuca sativae1
Treatment: UV-B treatmente2
Interactor: AMFe0symbiont
Outcome: symbiosise2
Direction: no_changeinferrede2

Not reportedComparator

Verbatim

e1
“Lettuce plants subjected to UV-B radiation showed an increase in callose and oxidative stress indicators, as well as a decrease in stomatal density”
✓ located verbatim in the source · abstract, characters 524–671

e2
“Mycorrhizal colonization cancelled out the effect of UV-B on stomatal density, while the symbiosis was not affected by UV-B treatment”
✓ located verbatim in the source · abstract, characters 673–806

e0
“lettuce plant response to AMF inoculation and UV-B exposure (0.4 W m−2; 16 h d−1; 2 weeks), either together or individually, as well as the interaction with the polyphagous insect pest Myzus persicae (Sulzer)”
✓ located verbatim in the source · abstract, characters 314–522

Title

Leaf UV-B Irradiation and Mycorrhizal Symbionts Affect Lettuce VOC Emissions and Defence Mechanisms, but Not Aphid Feeding Preferences

Valeria Zeni; Arianna Grassi; Marco Santin; et al. Insects 2022. doi:10.3390/insects14010020

Other claims from this paper (10)

Intervention effect UV-B increased callose and oxidative stress indicators in lettuce.
Intervention effect UV-B decreased stomatal density in lettuce.
Intervention effect Mycorrhizal colonization cancelled out the UV-B effect on lettuce stomatal density.
Intervention effect Mycorrhization had no significant effect on the lettuce volatilome, regardless of UV-B treatment.
Intervention effect UV-B significantly altered lettuce plant volatile emission.
Intervention effect The 1-undecene abundance increased under UV-B with mycorrhization (+M/+UVB: 48.0 ± 7.78%).
Intervention effect The decanal content decreased under UV-B with mycorrhization (+M/+UVB: 8.50 ± 3.90%).
Intervention effect The undecanal content decreased under UV-B with mycorrhization (+M/+UVB: 2.1 ± 0.65%).
Intervention effect The sesquiterpene hydrocarbons decreased under UV-B with mycorrhization (+M/+UVB: 18.0 ± 9.62 %).
Intervention effect Aphid (Myzus persicae) population was unaffected by any of the AMF and UV-B treatments.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Mycorrhization had no significant effect on the lettuce volatilome, regardless of UV-B treatment.

Taxon: LettuceLactuca sativae1
Treatment: Mycorrhizatione6
Outcome: plant volatilomee6
Direction: no_changeinferrede6
Qualifier: regardless of UV-B treatmente6

Not reportedComparator

Verbatim

e1
“Lettuce plants subjected to UV-B radiation showed an increase in callose and oxidative stress indicators, as well as a decrease in stomatal density”
✓ located verbatim in the source · abstract, characters 524–671

e6
“Mycorrhization, on the other hand, had no significant effect on the plant volatilome, regardless of UV-B treatment”
✓ located verbatim in the source · abstract, characters 1256–1370

Title

Leaf UV-B Irradiation and Mycorrhizal Symbionts Affect Lettuce VOC Emissions and Defence Mechanisms, but Not Aphid Feeding Preferences

Valeria Zeni; Arianna Grassi; Marco Santin; et al. Insects 2022. doi:10.3390/insects14010020

Other claims from this paper (10)

Intervention effect UV-B increased callose and oxidative stress indicators in lettuce.
Intervention effect UV-B decreased stomatal density in lettuce.
Intervention effect Mycorrhizal colonization cancelled out the UV-B effect on lettuce stomatal density.
Intervention effect The symbiosis was not affected by UV-B treatment.
Intervention effect UV-B significantly altered lettuce plant volatile emission.
Intervention effect The 1-undecene abundance increased under UV-B with mycorrhization (+M/+UVB: 48.0 ± 7.78%).
Intervention effect The decanal content decreased under UV-B with mycorrhization (+M/+UVB: 8.50 ± 3.90%).
Intervention effect The undecanal content decreased under UV-B with mycorrhization (+M/+UVB: 2.1 ± 0.65%).
Intervention effect The sesquiterpene hydrocarbons decreased under UV-B with mycorrhization (+M/+UVB: 18.0 ± 9.62 %).
Intervention effect Aphid (Myzus persicae) population was unaffected by any of the AMF and UV-B treatments.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Aphid (Myzus persicae) population was unaffected by any of the AMF and UV-B treatments.

Taxon: LettuceLactuca sativae1
Treatment: AMF inoculation and UV-B exposuree0
Interactor: Myzus persicaeMyzus persicaee0pest
Outcome: Aphid populatione7
Direction: no_changeinferrede7

Not reportedComparator

Verbatim

e1
“Lettuce plants subjected to UV-B radiation showed an increase in callose and oxidative stress indicators, as well as a decrease in stomatal density”
✓ located verbatim in the source · abstract, characters 524–671

e7
“Aphid population was unaffected by any of the treatments, implying a neutral plant response”
✓ located verbatim in the source · abstract, characters 1372–1463

e0
“lettuce plant response to AMF inoculation and UV-B exposure (0.4 W m−2; 16 h d−1; 2 weeks), either together or individually, as well as the interaction with the polyphagous insect pest Myzus persicae (Sulzer)”
✓ located verbatim in the source · abstract, characters 314–522

Title

Leaf UV-B Irradiation and Mycorrhizal Symbionts Affect Lettuce VOC Emissions and Defence Mechanisms, but Not Aphid Feeding Preferences

Valeria Zeni; Arianna Grassi; Marco Santin; et al. Insects 2022. doi:10.3390/insects14010020

Other claims from this paper (10)

Intervention effect UV-B increased callose and oxidative stress indicators in lettuce.
Intervention effect UV-B decreased stomatal density in lettuce.
Intervention effect Mycorrhizal colonization cancelled out the UV-B effect on lettuce stomatal density.
Intervention effect The symbiosis was not affected by UV-B treatment.
Intervention effect Mycorrhization had no significant effect on the lettuce volatilome, regardless of UV-B treatment.
Intervention effect UV-B significantly altered lettuce plant volatile emission.
Intervention effect The 1-undecene abundance increased under UV-B with mycorrhization (+M/+UVB: 48.0 ± 7.78%).
Intervention effect The decanal content decreased under UV-B with mycorrhization (+M/+UVB: 8.50 ± 3.90%).
Intervention effect The undecanal content decreased under UV-B with mycorrhization (+M/+UVB: 2.1 ± 0.65%).
Intervention effect The sesquiterpene hydrocarbons decreased under UV-B with mycorrhization (+M/+UVB: 18.0 ± 9.62 %).

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“decrease in density”

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