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240718s2024 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erae289
|2 doi
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|a pubmed25n1249.xml
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|a (DE-627)NLM375089470
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|a (NLM)39021331
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Ferguson, John N
|e verfasserin
|4 aut
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|a Reducing stomatal density by expression of a synthetic epidermal patterning factor increases leaf intrinsic water use efficiency and reduces plant water use in a C4 crop
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|c 2024
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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 15.11.2024
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|a Date Revised 17.11.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Enhancing crop water use efficiency (WUE) is a key target trait for climatic resilience and expanding cultivation on marginal lands. Engineering lower stomatal density to reduce stomatal conductance (gs) has improved WUE in multiple C3 crop species. However, reducing gs in C3 species often reduces photosynthetic carbon gain. A different response is expected in C4 plants because they possess specialized anatomy and biochemistry which concentrates CO2 at the site of fixation. This modifies the relationship of photosynthesis (AN) with intracellular CO2 concentration (ci), such that photosynthesis is CO2 saturated and reductions in gs are unlikely to limit AN. To test this hypothesis, genetic strategies were investigated to reduce stomatal density in the C4 crop sorghum. Constitutive expression of a synthetic epidermal patterning factor (EPF) transgenic allele in sorghum led to reduced stomatal densities, reduced gs, reduced plant water use, and avoidance of stress during a period of water deprivation. In addition, moderate reduction in stomatal density did not increase stomatal limitation to AN. However, these positive outcomes were associated with negative pleiotropic effects on reproductive development and photosynthetic capacity. Avoiding pleiotropy by targeting expression of the transgene to specific tissues could provide a pathway to improved agronomic outcomes
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|a Journal Article
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|a Sorghum bicolor
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|a C4 photosynthesis
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|a stomata
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|a water-use efficiency
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| 650 |
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Plant Proteins
|2 NLM
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| 700 |
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|a Schmuker, Peter
|e verfasserin
|4 aut
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| 700 |
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|a Dmitrieva, Anna
|e verfasserin
|4 aut
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| 700 |
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|a Quach, Truyen
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Tieling
|e verfasserin
|4 aut
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| 700 |
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|a Ge, Zhengxiang
|e verfasserin
|4 aut
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| 700 |
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|a Nersesian, Natalya
|e verfasserin
|4 aut
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| 700 |
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|a Sato, Shirley J
|e verfasserin
|4 aut
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| 700 |
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|a Clemente, Tom E
|e verfasserin
|4 aut
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| 700 |
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|a Leakey, Andrew D B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 75(2024), 21 vom: 15. Nov., Seite 6823-6836
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnas
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| 773 |
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|g volume:75
|g year:2024
|g number:21
|g day:15
|g month:11
|g pages:6823-6836
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/erae289
|3 Volltext
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