Abstract
Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis and then was either well irrigated with soil water content (SWC) of 80-85 % (O3+W) or drought treated (SWC 35-40 %, O3+D). Short-term ozone exposure significantly decreased irradiance-saturated net photosynthetic rate (P N) of winter wheat. Under good SWC, P N of the O3-treated plant was similar to that of control on 2 d after O3-exposure (6 DAA), but decreased significantly after 13 DAA, indicating that O3 exposure accelerated leaf senescence. Meanwhile, green flag leaf area was reduced faster than that of control. As a result, grain yield of O3+W was significantly decreased. P N of O3+D was further notably decreased and green flag leaf area was reduced more than that in O3+W. Consequently, substantial yield loss of O3+D was observed compared to that of O3+W. Although P N was significantly positively correlated with stomatal conductance, it also had notable positive correlation with the maximum photochemical efficiency in the dark adapted leaves (Fv/Fm), electron transport rate (ETR), photochemical quenching (qP), as well as content of chlorophyll, suggesting that the depression of P N was mainly caused by non-stomatal limitation. Hence optimal soil water condition should be considered in order to reduce the yield loss caused by O3 pollution.
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Claims 14
Claim · model-written summary
Short-term ozone exposure significantly decreased net photosynthetic rate of winter wheat compared with control.
- Taxon
- Winter wheat
Triticum aestivume0 - Material
- Jingdong 8e0
- Treatment
- short-term high ozone treatment after anthesise0
- Outcome
- net photosynthetic rate (P N)e1
- Direction
- decreasede1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“Short-term ozone exposure significantly decreased irradiance-saturated net photosynthetic rate (P N) of winter wheat”
e2“Under good SWC, P N of the O3-treated plant was similar to that of control on 2 d after O3-exposure (6 DAA)”
Claim · model-written summary
Net photosynthetic rate decreased significantly after 13 days after ozone exposure compared with control.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- short-term high ozone treatment after anthesise0
- Outcome
- P Ne2
- Direction
- decreasede3
- Qualifier
- after 13 DAAe3
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e2“Under good SWC, P N of the O3-treated plant was similar to that of control on 2 d after O3-exposure (6 DAA)”
e3“but decreased significantly after 13 DAA”
Claim · model-written summary
Net photosynthetic rate of ozone-treated plants was similar to control 6 days after ozone exposure under good soil water.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- short-term high ozone treatment after anthesise0
- Outcome
- P Ne2
- Direction
- similare2
- Qualifier
- Under good SWCe2
- Comparator
- controle2
- Setting
- on 2 d after O3-exposure (6 DAA)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e2“Under good SWC, P N of the O3-treated plant was similar to that of control on 2 d after O3-exposure (6 DAA)”
Claim · model-written summary
Ozone exposure accelerated leaf senescence in winter wheat (author interpretation).
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- O3 exposuree4
- Outcome
- leaf senescencee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e4“indicating that O3 exposure accelerated leaf senescence”
Claim · model-written summary
Green flag leaf area was reduced faster by ozone than in control.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- short-term high ozone treatment after anthesise0
- Outcome
- green flag leaf areae5
- Direction
- reduced fastere5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e5“Meanwhile, green flag leaf area was reduced faster than that of control”
Claim · model-written summary
Grain yield of ozone-treated plants under good soil water was significantly decreased compared with control.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- short-term high ozone treatment after anthesise0
- Outcome
- grain yielde6
- Direction
- decreasede6
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e5“Meanwhile, green flag leaf area was reduced faster than that of control”
e6“As a result, grain yield of O3+W was significantly decreased”
Claim · model-written summary
Net photosynthetic rate under ozone plus drought was further notably decreased compared with ozone under good soil water.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- O3+De7
- Outcome
- P Ne7
- Direction
- decreasede7
- Qualifier
- further notablye7
- Comparator
- O3+We7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e7“P N of O3+D was further notably decreased and green flag leaf area was reduced more than that in O3+W”
Claim · model-written summary
Green flag leaf area under ozone plus drought was reduced more than under ozone with good soil water.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- O3+De7
- Outcome
- green flag leaf areae7
- Direction
- reduced moree7
- Comparator
- O3+We7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e7“P N of O3+D was further notably decreased and green flag leaf area was reduced more than that in O3+W”
Claim · model-written summary
Yield loss under ozone plus drought was higher than under ozone with good soil water.
- Taxon
- Winter wheatTriticum aestivume0
- Treatment
- O3+De1
- Outcome
- yield losse1
- Direction
- higherinferrede1
- Comparator
- O3+We1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“Consequently, substantial yield loss of O3+D was observed compared to that of O3+W”
Claim · model-written summary
Net photosynthetic rate was significantly positively correlated with stomatal conductance.
- Taxon
- Winter wheatTriticum aestivume0
- Outcome
- P Ne1
- Direction
- positively correlatede1
- Qualifier
- stomatal conductancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“P N was significantly positively correlated with stomatal conductance”
Claim · model-written summary
Net photosynthetic rate had a notable positive correlation with Fv/Fm, ETR and qP.
- Taxon
- Winter wheatTriticum aestivume0
- Outcome
- P Ne1
- Direction
- notable positive correlatione2
- Qualifier
- maximum photochemical efficiency in the dark adapted leaves (Fv/Fm), electron transport rate (ETR), photochemical quenching (qP)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“P N was significantly positively correlated with stomatal conductance”
e2“notable positive correlation with the maximum photochemical efficiency in the dark adapted leaves (Fv/Fm), electron transport rate (ETR), photochemical quenching (qP)”
Claim · model-written summary
Net photosynthetic rate had a notable positive correlation with chlorophyll content.
- Taxon
- Winter wheatTriticum aestivume0
- Outcome
- P Ne1
- Direction
- notable positive correlatione2
- Qualifier
- content of chlorophylle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“P N was significantly positively correlated with stomatal conductance”
e2“notable positive correlation with the maximum photochemical efficiency in the dark adapted leaves (Fv/Fm), electron transport rate (ETR), photochemical quenching (qP)”
e3“as well as content of chlorophyll”
Claim · model-written summary
The depression of net photosynthesis is mainly caused by non-stomatal limitation (author interpretation).
- Taxon
- Winter wheatTriticum aestivume0
- Outcome
- depression of P Ne1
- Qualifier
- non-stomatal limitatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“the depression of P N was mainly caused by non-stomatal limitation”
Claim · model-written summary
Optimal soil water conditions should be considered to reduce yield loss caused by ozone pollution.
- Taxon
- Winter wheatTriticum aestivume0
- Outcome
- yield loss caused by O3 pollutione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat (Triticum aestivum L. cv. Jingdong 8) was exposed to short-term high ozone treatment after anthesis”
e1“Hence optimal soil water condition should be considered in order to reduce the yield loss caused by O3 pollution”
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See all 70 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.