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Taxon: tobacco ✕

Taxon groups are the verbatim names found in the abstracts (case-insensitive), not normalised: maize, corn and Zea mays are separate groups here. The Organism view merges them through NCBI Taxonomy.

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The authors associated the one-third lower stomatal density of resistant varieties with resistance through reduced ozone-rich air entry.

Outcome
resistancee0
Value
one‐thirde0
Qualifier
reducing the amount of ozone‐rich air which can enter the leafe0

Verbatim

e0

“This decrease in stomate density by one‐third in resistant varieties is thought to be associated with resistance by reducing the amount of ozone‐rich air which can enter the leaf.”

✓ located verbatim in the source · abstract, characters 361–540
e1

“tobacco ( Nicotiana tabacum L.)”

✓ located verbatim in the source · abstract, characters 102–133

Title

Stomate Density and Size as Related to Ozone‐Induced Weather Fleck in Tobacco1

C. E. Dean Crop Science 1972. doi:10.2135/cropsci1972.0011183x001200040054x

Other claims from this paper (2)
Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The authors suggest pollutant-induced permeability changes cause chloroplast dehydration and ultrastructural changes.

Organ / stage
chloroplastse0
Treatment
pollutantse0
Outcome
increase dehydration of the chloroplastse0
Qualifier
permeability changese0

Verbatim

e0

“The increase density of the stroma, formation of fibrils, and general decrease in volume is probably the result of an increase dehydration of the chloroplasts brought on by permeability changes induced by the pollutants.”

✓ located verbatim in the source · abstract, characters 1088–1308
e1

“tobacco (Nicotiana tabacum L.)”

✓ located verbatim in the source · abstract, characters 77–107

Title

Some effects of oxidant air pollutants (ozone and peroxyacetyl nitrate) on the ultrastructure of leaf tissues. [Phaseolus vulgaris; Nicotiana tabacum; Gossipyum hirsutum]

William W. Thomson; Elizabeth S. Swanson OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) 1972

Other claims from this paper (8)
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Resistant tobacco varieties averaged 25.4 stomates per mm 2 versus 37.4 in susceptible varieties.

Material
‘Florida 20’ and ‘C‐80’e0
Organ / stage
adaxial leaf surfacee0
Outcome
stomates per mm 2e0
Direction
decreaseinferrede0
Value
25.4 stomates per mm 2e0
Qualifier
37.4e0
Comparator
susceptible varietiese0

Verbatim

e0

“The resistant varieties ‘Florida 20’ and ‘C‐80’ averaged 25.4 stomates per mm 2 on the adaxial leaf surface, while the susceptible varieties ‘2612‐2,’ ‘2612‐3,’ and ‘Bel W‐3’ averaged 37.4.”

✓ located verbatim in the source · abstract, characters 171–360
e1

“tobacco ( Nicotiana tabacum L.)”

✓ located verbatim in the source · abstract, characters 102–133

Title

Stomate Density and Size as Related to Ozone‐Induced Weather Fleck in Tobacco1

C. E. Dean Crop Science 1972. doi:10.2135/cropsci1972.0011183x001200040054x

Other claims from this paper (2)

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