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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/eru243
|2 doi
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|a pubmed24n1400.xml
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|a (DE-627)NLM239034627
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|a (NLM)24913629
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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 Mendiondo, Guillermina M
|e verfasserin
|4 aut
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| 245 |
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|a Barley has two peroxisomal ABC transporters with multiple functions in β-oxidation
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|c 2014
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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 28.05.2015
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|a Date Revised 07.05.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a In oilseed plants, peroxisomal β-oxidation functions not only in lipid catabolism but also in jasmonate biosynthesis and metabolism of pro-auxins. Subfamily D ATP-binding cassette (ABC) transporters mediate import of β-oxidation substrates into the peroxisome, and the Arabidopsis ABCD protein, COMATOSE (CTS), is essential for this function. Here, the roles of peroxisomal ABCD transporters were investigated in barley, where the main storage compound is starch. Barley has two CTS homologues, designated HvABCD1 and HvABCD2, which are widely expressed and present in embryo and aleurone tissues during germination. Suppression of both genes in barley RNA interference (RNAi) lines indicated roles in metabolism of 2,4-dichlorophenoxybutyrate (2,4-DB) and indole butyric acid (IBA), jasmonate biosynthesis, and determination of grain size. Transformation of the Arabidopsis cts-1 null mutant with HvABCD1 and HvABCD2 confirmed these findings. HvABCD2 partially or completely complemented all tested phenotypes of cts-1. In contrast, HvABCD1 failed to complement the germination and establishment phenotypes of cts-1 but increased the sensitivity of hypocotyls to 100 μM IBA and partially complemented the seed size phenotype. HvABCD1 also partially complemented the yeast pxa1/pxa2Δ mutant for fatty acid β-oxidation. It is concluded that the core biochemical functions of peroxisomal ABC transporters are largely conserved between oilseeds and cereals but that their physiological roles and importance may differ
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Aleurone
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|a gene duplication
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|a germination
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|a indole butyric acid
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|a oil body
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|a seed size.
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|a ATP-Binding Cassette Transporters
|2 NLM
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| 650 |
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|a Arabidopsis Proteins
|2 NLM
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| 700 |
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|a Medhurst, Anne
|e verfasserin
|4 aut
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|a van Roermund, Carlo W
|e verfasserin
|4 aut
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|a Zhang, Xuebin
|e verfasserin
|4 aut
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|a Devonshire, Jean
|e verfasserin
|4 aut
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|a Scholefield, Duncan
|e verfasserin
|4 aut
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|a Fernández, José
|e verfasserin
|4 aut
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|a Axcell, Barry
|e verfasserin
|4 aut
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|a Ramsay, Luke
|e verfasserin
|4 aut
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|a Waterham, Hans R
|e verfasserin
|4 aut
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|a Waugh, Robbie
|e verfasserin
|4 aut
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|a Theodoulou, Frederica L
|e verfasserin
|4 aut
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|a Holdsworth, Michael J
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 65(2014), 17 vom: 15. Sept., Seite 4833-47
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:65
|g year:2014
|g number:17
|g day:15
|g month:09
|g pages:4833-47
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|u http://dx.doi.org/10.1093/jxb/eru243
|3 Volltext
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|d 65
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|h 4833-47
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