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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/ert077
|2 doi
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|a pubmed24n0755.xml
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|a (NLM)23580749
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Comont, David
|e verfasserin
|4 aut
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|a Latitudinal variation in ambient UV-B radiation is an important determinant of Lolium perenne forage production, quality, and digestibility
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|c 2013
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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 13.12.2013
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|a Date Revised 21.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Few studies to date have considered the responses of agriculturally important forage grasses to UV-B radiation. Yet grasses such as Lolium perenne have a wide current distribution, representing exposure to a significant variation in ambient UV-B. The current study investigated the responses of L. perenne (cv. AberDart) to a simulated latitudinal gradient of UV-B exposure, representing biologically effective UV-B doses at simulated 70, 60, 50, 40, and 30° N latitudes. Aspects of growth, soluble compounds, and digestibility were assessed, and results are discussed in relation to UV-B effects on forage properties and the implications for livestock and bio-ethanol production. Aboveground biomass production was reduced by approximately 12.67% with every 1 kJ m(-2) day(-1) increase in biologically weighted UV-B. As a result, plants grown in the highest UV-B treatment had a total biomass of just 13.7% of controls. Total flavonoids were increased by approximately 76% by all UV-B treatments, while hydroxycinnamic acids increased in proportion to the UV-B dose. Conversely, the digestibility of the aboveground biomass and concentrations of soluble fructans were reduced by UV-B exposure, although soluble sucrose, glucose, and fructose concentrations were unaffected. These results highlight the capacity for UV-B to directly affect forage productivity and chemistry, with negative consequences for digestibility and bioethanol production. Results emphasize the need for future development and distribution of L. perenne varieties to take UV-B irradiance into consideration
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Carbohydrate
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|a digestibility
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|a forage quality
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|a growth
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|a phenolics
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|a ultraviolet-B.
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|a Biofuels
|2 NLM
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|a Coumaric Acids
|2 NLM
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|a Flavonoids
|2 NLM
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|a Fructose
|2 NLM
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|a 30237-26-4
|2 NLM
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| 650 |
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|a Sucrose
|2 NLM
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|a 57-50-1
|2 NLM
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|a Glucose
|2 NLM
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|a IY9XDZ35W2
|2 NLM
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| 700 |
1 |
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|a Winters, Ana
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gomez, Leonardo D
|e verfasserin
|4 aut
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| 700 |
1 |
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|a McQueen-Mason, Simon J
|e verfasserin
|4 aut
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| 700 |
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|a Gwynn-Jones, Dylan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 64(2013), 8 vom: 01. Mai, Seite 2193-204
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:64
|g year:2013
|g number:8
|g day:01
|g month:05
|g pages:2193-204
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|u http://dx.doi.org/10.1093/jxb/ert077
|3 Volltext
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