Abstract
summary ‘Tiny Tim’ tomato plants were exposed to five CO 2 treatments (375 (ambient), 450, 525, 600 or 675 μmol mol −1 ) in combination with 0 3 (0 or 80 nmol mol −1 . Biomass was evaluated following 3,5,7 and 13 wk exposure. Biomass following 13 wk exposure also included weekly harvests of mature tomato fruit beginning week 8. Carbon dioxide enrichment significantly enhanced total vegetative plant d. wt at each harvest, as well as cumulative yield of mature fruit, whereas O 3 significantly suppressed total vegetative plant d. wt at each harvest and reduced total cumulative fruit yield. The magnitude of these changes varied with the development of tomato from early growth to mature fruit yield. Carbon dioxide enrichment reduced the detrimental effects of O 3 on total vegetative plant d. wt of tomato following 3, 5, 7 and 13 wk exposure. Final mature fruit yield was 24% higher under enriched GO 2 treatments than in ambient CO 2 . Ozone suppressed final yield by 31%, following exposure to 80 nmol mol −1 O 2 , when compared with exposure to charcoal‐filtered (CF) air. The impacts of both CO 2 and O 3 on yield were, however, dependent upon the presence or absence of the other gas. In the absence of O 3 , yields were very similar for the ambient and elevated CO 2 treatments, but in the presence of O 3 , yields under ambient CO 2 were greatly suppressed whereas yields under elevated CO 3 were similar to those in the absence of O 3 . Thus, enriched CO 2 ameliorated most of the suppressive effect of O 3 on yield of mature fruit.
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Claims 12
Claim · model-written summary
Carbon dioxide enrichment significantly increased vegetative dry weight at each harvest.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Carbon dioxide enrichmente0
- Outcome
- total vegetative plant d. wte0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carbon dioxide enrichment significantly enhanced total vegetative plant d. wt at each harvest”
t0“tomato”
Claim · model-written summary
Carbon dioxide enrichment significantly increased cumulative mature fruit yield.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Carbon dioxide enrichmente0
- Outcome
- cumulative yield of mature fruite0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carbon dioxide enrichment significantly enhanced total vegetative plant d. wt at each harvest, as well as cumulative yield of mature fruit”
t0“tomato”
Claim · model-written summary
Ozone significantly suppressed vegetative dry weight at each harvest.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- O 3e0
- Outcome
- total vegetative plant d. wte0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“O 3 significantly suppressed total vegetative plant d. wt at each harvest”
t0“tomato”
Claim · model-written summary
Ozone reduced total cumulative fruit yield.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- O 3e0
- Outcome
- total cumulative fruit yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“O 3 significantly suppressed total vegetative plant d. wt at each harvest and reduced total cumulative fruit yield”
t0“tomato”
Claim · model-written summary
The magnitude of biomass and yield responses varied across tomato development.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- magnitude of these changese0
- Qualifier
- from early growth to mature fruit yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of these changes varied with the development of tomato from early growth to mature fruit yield”
Claim · model-written summary
Carbon dioxide enrichment reduced ozone damage to vegetative dry weight after 3, 5, 7 and 13 weeks.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Carbon dioxide enrichmente0
- Outcome
- detrimental effects of O 3 on total vegetative plant d. wte0
- Direction
- reducede0
- Qualifier
- following 3, 5, 7 and 13 wk exposuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Carbon dioxide enrichment reduced the detrimental effects of O 3 on total vegetative plant d. wt of tomato following 3, 5, 7 and 13 wk exposure”
Claim · model-written summary
Final mature fruit yield was 24% higher under enriched carbon dioxide than ambient carbon dioxide.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- enriched GO 2 treatmentse0
- Outcome
- Final mature fruit yielde0
- Direction
- highere0
- Value
- 24%e0
- Comparator
- ambient CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Final mature fruit yield was 24% higher under enriched GO 2 treatments than in ambient CO 2”
t0“tomato”
Claim · model-written summary
Ozone exposure suppressed final yield by 31% against charcoal-filtered air.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 80 nmol mol −1 O 2e0
- Outcome
- final yielde0
- Direction
- suppressede0
- Value
- 31%e0
- Comparator
- charcoal‐filtered (CF) aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ozone suppressed final yield by 31%, following exposure to 80 nmol mol −1 O 2 , when compared with exposure to charcoal‐filtered (CF) air”
t0“tomato”
Claim · model-written summary
The yield effects of carbon dioxide and ozone depended on the presence of the other gas.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- CO 2 and O 3e0
- Outcome
- yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The impacts of both CO 2 and O 3 on yield were, however, dependent upon the presence or absence of the other gas”
t0“tomato”
Claim · model-written summary
Without ozone, yield was similar at ambient and elevated carbon dioxide.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- elevated CO 2 treatmentse0
- Outcome
- yieldse0
- Direction
- very similare0
- Qualifier
- absence of O 3e0
- Comparator
- ambiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of O 3 , yields were very similar for the ambient and elevated CO 2 treatments”
t0“tomato”
Claim · model-written summary
With ozone, ambient carbon dioxide greatly suppressed yield.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- ambient CO 2e0
- Outcome
- yieldse0
- Direction
- greatly suppressede0
- Qualifier
- presence of O 3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the presence of O 3 , yields under ambient CO 2 were greatly suppressed”
t0“tomato”
Claim · model-written summary
With ozone, elevated carbon dioxide yield resembled yield without ozone.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- elevated CO 3e0
- Outcome
- yieldse0
- Direction
- similare0
- Comparator
- absence of O 3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yields under elevated CO 3 were similar to those in the absence of O 3”
t0“tomato”
The same questions in other papers
ozone · yield · Solanum lycopersicum (tomato)Results differ
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- positive
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See all 8 papers →co2 · yield · Solanum lycopersicum (tomato)Results differ
31 papers in the same direction as this paper · 7 in the opposite direction
- no effect
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- no effect
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See all 39 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.