Intervention effectmodel-written summary

Electron transport and HADPH levels were unaffected by ozone fumigation.

A claim from Response of photosynthesis and the cellular antioxidant system to ozone in populus leaves · 1989

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Electron transport and HADPH levels were unaffected by ozone fumigation.

Taxon
poplarsPopuluse1
Treatment
180 ppb ozone for 3 he2
Outcome
electron transport and HADPH levelse0
Direction
unaffectede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Populus
Populus · Taxon · picture of the genus (one of its species)Christian Fischer · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“electron transport and HADPH levels were unaffected”

✓ located verbatim in the source · abstract, characters 765–816
e1

“poplars (fifth emergent leaf)”

✓ located verbatim in the source · abstract, characters 361–390
e2

“fumigated with 180 ppb ozone for 3 h”

✓ located verbatim in the source · abstract, characters 454–490

Title

Response of photosynthesis and the cellular antioxidant system to ozone in populus leaves

Archana Sengupta; D.C. McCune; Ruth Alscher Plant Physiology, Supplement; (USA) 1989

Other claims from this paper (5)

Record rev-eff193ac29aabe06e0287f876a750485f1ebab381f943d1a40e82f9198a79a24 · schema claims-v0.9 · position 5 in the model’s answer

ozone · physiology: photosynthesis · Populus (poplar)Results differ

18 papers: 1 positive, 17 negative or no effect

16 papers in the same direction as this claim · 1 in the opposite direction

  1. positive
    Ozone stress increased net photosynthesis in upper leaves.

    Chlorophyll a fluorescence analysis along a vertical gradient of the crown in a poplar (Oxford clone) subjected to ozone and water stress · 2012

    Opposite direction

  2. no effect
    Photosynthetic rates were unaffected during the first 90 minutes of ozone.

    Response of Photosynthesis and Cellular Antioxidants to Ozone in Populus Leaves · 1991

    Same direction

  3. negative
    Ozone reduced chlorophyll content and photosynthetic electron transport in fully expanded leaves.

    Ozone‐induced changes in photosynthesis and photorespiration of hybrid poplar in relation to the developmental stage of the leaves · 2008

    Same direction

  4. negative
    Ozone downregulated Calvin cycle and chloroplast electron transport proteins.

    A DIGE analysis of developing poplar leaves subjected to ozone reveals major changes in carbon metabolism · 2007

    Same direction

  5. negative
    Ozone decreased photosynthetic rate in both clones.

    Ozone Sensitivity in Hybrid Poplar Is Correlated with a Lack of Defense-Gene Activation · 1998

    Same direction

  6. negative
    Ozone reduced Rubisco activity and quantity in hybrid poplar.

    Modification of Rubisco and Altered Proteolytic Activity in O3-Stressed Hybrid Poplar (Populus maximowizii x trichocarpa) · 1993

    Same direction

  7. negative
    In unshaded poplar, ozone lowered in situ net photosynthesis, but not in sugar maple.

    Light environment alters response to ozone stress in seedlings of Acer saccharum Marsh, and hybrid Populus L. · 1993

    Same direction

  8. negative
    Chronic O3 exposure decreased Rubisco concentration in lower leaves of hybrid poplar at a more rapid rate than in charcoal-filtered air as the canopy aged.

    Ozone-induced changes in biosynthesis of Rubisco and associated compensation to stress in foliage of hybrid poplar · 1998 · compared with charcoal-filtered air

    Same direction

9 papers more in this group

See all 18 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.