Online CO2 and H2 O oxygen isotope fractionation allows estimation of mesophyll conductance in C4 plants, and reveals that mesophyll conductance decreases as leaves age in both C4 and C3 plants

© 2016 The Authors. New Phytologist © 2016 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 210(2016), 3 vom: 07. Mai, Seite 875-89
1. Verfasser: Barbour, Margaret M (VerfasserIn)
Weitere Verfasser: Evans, John R, Simonin, Kevin A, von Caemmerer, Susanne
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Flaveria bidentis Gossypium hirsutum Nicotiana tabacum Setaria viridis Triticum aestivum Zea mays mesophyll conductance oxygen isotope mehr... Carbon Isotopes Oxygen Isotopes Carbon Dioxide 142M471B3J Oxygen S88TT14065
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100 1 |a Barbour, Margaret M  |e verfasserin  |4 aut 
245 1 0 |a Online CO2 and H2 O oxygen isotope fractionation allows estimation of mesophyll conductance in C4 plants, and reveals that mesophyll conductance decreases as leaves age in both C4 and C3 plants 
264 1 |c 2016 
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500 |a Date Completed 26.12.2016 
500 |a Date Revised 30.09.2020 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a © 2016 The Authors. New Phytologist © 2016 New Phytologist Trust. 
520 |a Mesophyll conductance significantly, and variably, limits photosynthesis but we currently have no reliable method of measurement for C4 plants. An online oxygen isotope technique was developed to allow quantification of mesophyll conductance in C4 plants and to provide an alternative estimate in C3 plants. The technique is compared to an established carbon isotope method in three C3 species. Mesophyll conductance of C4 species was similar to that in the C3 species measured, and declined in both C4 and C3 species as leaves aged from fully expanded to senescing. In cotton leaves, simultaneous measurement of carbon and oxygen isotope discrimination allowed the partitioning of total conductance to the chloroplasts into cell wall and plasma membrane versus chloroplast membrane components, if CO2 was assumed to be isotopically equilibrated with cytosolic water, and the partitioning remained stable with leaf age. The oxygen isotope technique allowed estimation of mesophyll conductance in C4 plants and, when combined with well-established carbon isotope techniques, may provide additional information on mesophyll conductance in C3 plants 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Flaveria bidentis 
650 4 |a Gossypium hirsutum 
650 4 |a Nicotiana tabacum 
650 4 |a Setaria viridis 
650 4 |a Triticum aestivum 
650 4 |a Zea mays 
650 4 |a mesophyll conductance 
650 4 |a oxygen isotope 
650 7 |a Carbon Isotopes  |2 NLM 
650 7 |a Oxygen Isotopes  |2 NLM 
650 7 |a Carbon Dioxide  |2 NLM 
650 7 |a 142M471B3J  |2 NLM 
650 7 |a Oxygen  |2 NLM 
650 7 |a S88TT14065  |2 NLM 
700 1 |a Evans, John R  |e verfasserin  |4 aut 
700 1 |a Simonin, Kevin A  |e verfasserin  |4 aut 
700 1 |a von Caemmerer, Susanne  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t The New phytologist  |d 1979  |g 210(2016), 3 vom: 07. Mai, Seite 875-89  |w (DE-627)NLM09818248X  |x 1469-8137  |7 nnns 
773 1 8 |g volume:210  |g year:2016  |g number:3  |g day:07  |g month:05  |g pages:875-89 
856 4 0 |u http://dx.doi.org/10.1111/nph.13830  |3 Volltext 
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