Abstract
To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress.During the period of sub-high temperature,tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor).Chlorophyll content,photosynthetic rate and chlorophyll fluorescence parameters were investigated.The results showed that photosynthesis in tomato leaves pretreated with daytime sub-temperature was significantly inhibited tomato,and chlorophyll content,Fv/Fm,ΦPS Ⅱ,ETR and qP decreased,but Fo and NPQ increased.Furthermore there were some influences on Gs,Tr and Ls;Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control,these results showed that there was high PS Ⅱ activity in tomato leaves pretreated with CaCl2,however,Ls and Ci were not affected;The PS Ⅱ activity in tomato leaves pretreated with calcium inhibitor suffered more serious injuries.Inhibition of photosynthesis in daytime sub-high temperature stress had no relation with stomatal factors,the reduction of photosynthesis may be deceased PS Ⅱ activity which was caused by the damage of PS Ⅱ.CaCl2 pretreatment effectively alleviated the damage to the function of PS Ⅱ in tomato leaves under sub-high temperature stress,and maintained higher PS Ⅱ activity.Consequently CaCl2 can relieve the inhibition of photosynthesis due to daytime sub-high temperature stress.
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Claims 15
Claim · model-written summary
Daytime sub-high temperature stress significantly inhibited photosynthesis in tomato leaves compared with control.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- sub-high temperature stresse0
- Outcome
- photosynthesise2
- Direction
- significantly inhibitede2
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress”
e2“photosynthesis in tomato leaves pretreated with daytime sub-temperature was significantly inhibited tomato,and chlorophyll content,Fv/Fm,ΦPS Ⅱ,ETR and qP decreased,but Fo and NPQ increased.Furthermore there were some influences on Gs,Tr and Ls”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
Sub-high temperature stress decreased chlorophyll content, Fv/Fm and ΦPSII of tomato leaves compared with control.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- sub-high temperature stresse0
- Outcome
- chlorophyll content,Fv/Fm,ΦPS Ⅱe2
- Direction
- decreasede2
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress”
e2“photosynthesis in tomato leaves pretreated with daytime sub-temperature was significantly inhibited tomato,and chlorophyll content,Fv/Fm,ΦPS Ⅱ,ETR and qP decreased,but Fo and NPQ increased.Furthermore there were some influences on Gs,Tr and Ls”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
Sub-high temperature stress decreased ETR and qP of tomato leaves compared with control.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- sub-high temperature stresse0
- Outcome
- ETR and qPe2
- Direction
- decreasede2
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress”
e2“photosynthesis in tomato leaves pretreated with daytime sub-temperature was significantly inhibited tomato,and chlorophyll content,Fv/Fm,ΦPS Ⅱ,ETR and qP decreased,but Fo and NPQ increased.Furthermore there were some influences on Gs,Tr and Ls”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
Sub-high temperature stress increased Fo and NPQ of tomato leaves compared with control.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- sub-high temperature stresse0
- Outcome
- Fo and NPQe2
- Direction
- increasede2
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress”
e2“photosynthesis in tomato leaves pretreated with daytime sub-temperature was significantly inhibited tomato,and chlorophyll content,Fv/Fm,ΦPS Ⅱ,ETR and qP decreased,but Fo and NPQ increased.Furthermore there were some influences on Gs,Tr and Ls”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
CaCl2 pretreatment significantly increased chlorophyll content and net photosynthesis rate of tomato leaves compared with control.
- Taxon
- tomatoSolanum lycopersicume3
- Treatment
- CaCl2e3
- Outcome
- Chlorophyll content and net photosynthesis rate(Pn)e3
- Direction
- significantly increasede3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
CaCl2 pretreatment did not change Fo, Fv/Fm and ΦPSII of tomato leaves compared with control.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- CaCl2 pretreatmente3
- Outcome
- Fo,Fv/Fm,ΦPS Ⅱe3
- Direction
- no differencee3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor)”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
CaCl2 pretreatment did not change NPQ of tomato leaves compared with control.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- CaCl2 pretreatmente3
- Outcome
- NPQe3
- Direction
- no differencee3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor)”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
CaCl2 pretreatment left qP and ETR of tomato leaves slightly lower than control.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- CaCl2 pretreatmente3
- Outcome
- qP,ETRe3
- Direction
- slightly lowere3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor)”
e3“Chlorophyll content and net photosynthesis rate(Pn) in tomato leaves pretreated with CaCl2 were significantly increased,and there was no difference in the Fo,Fv/Fm,ΦPS Ⅱ and NPQ between CaCl2 pretreatment and control,while qP,ETR was slightly lower than that of control”
Claim · model-written summary
CaCl2 pretreatment did not affect Ls and Ci of tomato leaves.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- CaCl2e4
- Outcome
- Ls and Cie4
- Direction
- not affectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor)”
e4“tomato leaves pretreated with CaCl2,however,Ls and Ci were not affected;The PS Ⅱ activity in tomato leaves pretreated with calcium inhibitor suffered more serious injuries”
Claim · model-written summary
Sub-high temperature stress had some influence on Gs, Tr and Ls of tomato leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- sub-high temperature stresse0
- Outcome
- Gs,Tr and Lse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress”
e2“photosynthesis in tomato leaves pretreated with daytime sub-temperature was significantly inhibited tomato,and chlorophyll content,Fv/Fm,ΦPS Ⅱ,ETR and qP decreased,but Fo and NPQ increased.Furthermore there were some influences on Gs,Tr and Ls”
Claim · model-written summary
Calcium inhibitor pretreatment left PS II activity of tomato leaves more seriously injured.
- Taxon
- tomatoSolanum lycopersicume4
- Treatment
- calcium inhibitore4
- Outcome
- PS Ⅱ activitye4
- Direction
- suffered more serious injuriese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor)”
e4“tomato leaves pretreated with CaCl2,however,Ls and Ci were not affected;The PS Ⅱ activity in tomato leaves pretreated with calcium inhibitor suffered more serious injuries”
Claim · model-written summary
Inhibition of photosynthesis under daytime sub-high temperature stress had no relation with stomatal factors.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- daytime sub-high temperature stresse5
- Outcome
- Inhibition of photosynthesise5
- Direction
- no_changeinferrede5
- Comparator
- stomatal factorse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To analyze the regulation of calcium on photosynthesis and PS Ⅱ activity in tomato leaves under sub-high temperature stress”
e5“Inhibition of photosynthesis in daytime sub-high temperature stress had no relation with stomatal factors,the reduction of photosynthesis may be deceased PS Ⅱ activity which was caused by the damage of PS Ⅱ”
Claim · model-written summary
The authors suggest that the photosynthesis reduction may be due to decreased PS II activity caused by PS II damage.
- Taxon
- tomatoesSolanum lycopersicume1
- Outcome
- reduction of photosynthesise5
- Qualifier
- damage of PS Ⅱe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“tomatoes liaoyuanduoli grown in the plastic pot were pretreated with CaCl2,EGTA(Ca2+ chelator),and LaCl3(Ca2+ channel inhibitor)”
e5“Inhibition of photosynthesis in daytime sub-high temperature stress had no relation with stomatal factors,the reduction of photosynthesis may be deceased PS Ⅱ activity which was caused by the damage of PS Ⅱ”
Claim · model-written summary
CaCl2 pretreatment alleviated damage to PS II function of tomato leaves under sub-high temperature stress.
- Taxon
- tomatoSolanum lycopersicume6
- Treatment
- CaCl2 pretreatmente6
- Outcome
- damage to the function of PS Ⅱe6
- Direction
- alleviatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“CaCl2 pretreatment effectively alleviated the damage to the function of PS Ⅱ in tomato leaves under sub-high temperature stress,and maintained higher PS Ⅱ activity”
Claim · model-written summary
CaCl2 pretreatment maintained higher PS II activity in tomato leaves under sub-high temperature stress.
- Taxon
- tomatoSolanum lycopersicume6
- Treatment
- CaCl2 pretreatmente6
- Outcome
- PS Ⅱ activitye6
- Direction
- maintained highere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“CaCl2 pretreatment effectively alleviated the damage to the function of PS Ⅱ in tomato leaves under sub-high temperature stress,and maintained higher PS Ⅱ activity”
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