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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erx034
|2 doi
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|a pubmed24n0901.xml
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|a (DE-627)NLM270577521
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|a (NLM)28369547
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Sui, Xiaolei
|e verfasserin
|4 aut
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| 245 |
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|a The complex character of photosynthesis in cucumber fruit
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 13.11.2018
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author 2017. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a The surface area of a mature green cucumber (Cucumis sativa L.) fruit is comparable with that of a functional leaf, but the characteristics of fruit photosynthesis and its contribution to growth are poorly understood. Here, the photosynthetic properties of two genotypes of cucumber (dark green and light green fruits) were studied using a combination of electron microscopy, immunogold enzyme localization, chlorophyll fluorescence imaging, isotope tracer, and fruit darkening techniques. Chlorophyll content of the exocarp is similar to that of leaves, but there are no distinctive palisade and spongy tissues. The efficiency of PSII is similar to that in leaves, but with lower non-photochemical quenching (NPQ). Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is found mainly in the exocarp, while phosphoenolpyruvate carboxylase (PEPC) is primarily localized to vascular bundles and placenta tissue. Rubisco and PEPC expression at both transcriptional and translational levels increases concurrently during fruit growth. The contribution of fruit photosynthesis in exocarp to its own C accumulation is 9.4%, while ~88% of respiratory CO2 in fruit was captured and re-fixed. Photosynthesis by cucumber fruits, through direct fixation of atmospheric CO2 and recapture of respired CO2, as verified by 14CO2 uptake and gas exchange, makes an important contribution to fruit growth
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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4 |
|a Chloroplast
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| 650 |
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|a PEPC (phosphoenolpyruvate carboxylase)
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| 650 |
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4 |
|a Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase).
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| 650 |
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4 |
|a cucumber
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| 650 |
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|a fruit photosynthesis
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| 650 |
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4 |
|a respiration
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| 650 |
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|a Carbon Dioxide
|2 NLM
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| 650 |
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7 |
|a 142M471B3J
|2 NLM
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| 650 |
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|a Phosphoenolpyruvate Carboxylase
|2 NLM
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| 650 |
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7 |
|a EC 4.1.1.31
|2 NLM
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| 650 |
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7 |
|a Ribulose-Bisphosphate Carboxylase
|2 NLM
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| 650 |
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7 |
|a EC 4.1.1.39
|2 NLM
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| 700 |
1 |
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|a Shan, Nan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hu, Liping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Cankui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Changqing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ren, Huazhong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Turgeon, Robert
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Zhenxian
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 68(2017), 7 vom: 01. März, Seite 1625-1637
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:68
|g year:2017
|g number:7
|g day:01
|g month:03
|g pages:1625-1637
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/erx034
|3 Volltext
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