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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/nph.19299
|2 doi
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|a eng
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1 |
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|a Bellasio, Chandra
|e verfasserin
|4 aut
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| 245 |
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|a C4 maize and sorghum are more sensitive to rapid dehydration than C3 wheat and sunflower
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 14.02.2024
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|a Date Revised 14.02.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
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|a The high productive potential, heat resilience, and greater water use efficiency of C4 over C3 plants attract considerable interest in the face of global warming and increasing population, but C4 plants are often sensitive to dehydration, questioning the feasibility of their wider adoption. To resolve the primary effect of dehydration from slower from secondary leaf responses originating within leaves to combat stress, we conducted an innovative dehydration experiment. Four crops grown in hydroponics were forced to a rapid yet controlled decrease in leaf water potential by progressively raising roots of out of the solution while measuring leaf gas exchange. We show that, under rapid dehydration, assimilation decreased more steeply in C4 maize and sorghum than in C3 wheat and sunflower. This reduction was due to a rise of nonstomatal limitation at triple the rate in maize and sorghum than in wheat and sunflower. Rapid reductions in assimilation were previously measured in numerous C4 species across both laboratory and natural conditions. Hence, we deduce that high sensitivity to rapid dehydration might stem from the disturbance of an intrinsic aspect of C4 bicellular photosynthesis. We posit that an obstruction to metabolite transport between mesophyll and bundle sheath cells could be the cause
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|a Journal Article
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|a dehydration
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|a drought
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|a nonstomatal limitation
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|a photosynthesis
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|a stress
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|a turgor
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|a Stuart-Williams, Hilary
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|a Farquhar, Graham D
|e verfasserin
|4 aut
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| 700 |
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|a Flexas, Jaume
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 240(2023), 6 vom: 24. Dez., Seite 2239-2252
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|g volume:240
|g year:2023
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|g month:12
|g pages:2239-2252
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|u http://dx.doi.org/10.1111/nph.19299
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