AUXIN-BINDING-PROTEIN1 (ABP1) in phytochrome-B-controlled responses

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dc.identifier.uri Effendi, Yunus Jones, Alan M. Scherer, Günther F.E. 2016-08-29T13:44:50Z 2016-08-29T13:44:50Z 2013-11
dc.identifier.citation Effendi, Yunus; Jones, Alan M.; Scherer, Guenther F. E.: AUXIN-BINDING-PROTEIN1 (ABP1) in phytochrome-B-controlled responses. In: Journal of Experimental Botany 64 (2013), Nr. 16, S. 5065-5074. DOI:
dc.description.abstract The auxin receptor ABP1 directly regulates plasma membrane activities including the number of PIN-formed (PIN) proteins and auxin efflux transport. Red light (R) mediated by phytochromes regulates the steady-state level of ABP1 and auxin-inducible growth capacity in etiolated tissues but, until now, there has been no genetic proof that ABP1 and phytochrome regulation of elongation share a common mechanism for organ elongation. In far red (FR)-enriched light, hypocotyl lengths were larger in the abp1-5 and abp1/ABP1 mutants, but not in tir1-1, a null mutant of the TRANSPORT-INHIBITOR-RESPONSE1 auxin receptor. The polar auxin transport inhibitor naphthylphthalamic acid (NPA) decreased elongation in the low R: FR light-enriched white light (WL) condition more strongly than in the high red: FR light-enriched condition WL suggesting that auxin transport is an important condition for FR-induced elongation. The addition of NPA to hypocotyls grown in R-and FR-enriched light inhibited hypocotyl gravitropism to a greater extent in both abp1 mutants and in phyB-9 and phyA-211 than the wild-type hypocotyl, arguing for decreased phytochrome action in conjunction with auxin transport in abp1 mutants. Transcription of FR-enriched light-induced genes, including several genes regulated by auxin and shade, was reduced 3-5-fold in abp1-5 compared with Col and was very low in abp1/ABP1. In the phyB-9 mutant the expression of these reporter genes was 5-15-fold lower than in Col. In tir1-1 and the phyA-211 mutants shade-induced gene expression was greatly attenuated. Thus, ABP1 directly or indirectly participates in auxin and light signalling. eng
dc.description.sponsorship Deutsches Zentrum für Luft- und Raumfahrt/ 50WB0627
dc.description.sponsorship Deutsches Zentrumfür Luft- und Raumfahrt/50BW0933
dc.description.sponsorship NIGMS/R01GM065989
dc.description.sponsorship DOE/DE-FG02-05er15671
dc.description.sponsorship NSF/MCB-0723515
dc.description.sponsorship NSF/MCB-0718202
dc.description.sponsorship DLR/50WB0627
dc.description.sponsorship DLR/50BW0933
dc.description.sponsorship NIGMS/R01GM065989
dc.description.sponsorship DOE/DE-FG02-05er15671
dc.description.sponsorship NSF/MCB-0723515
dc.description.sponsorship NSF/MCB-0718202
dc.language.iso eng
dc.publisher Oxford : Oxford Univ. Press
dc.relation.ispartofseries Journal of Experimental Botany 64 (2013), Nr. 16
dc.rights CC BY 3.0
dc.subject auxin-binding protein1 (abp1) eng
dc.subject early auxin-regulated genes eng
dc.subject elongation eng
dc.subject gravitropism eng
dc.subject phototropism eng
dc.subject phytochrome eng
dc.subject shade avoidance eng
dc.subject auxin-binding protein-1 eng
dc.subject shade-avoidance-response eng
dc.subject light-regulated growth eng
dc.subject arabidopsis-thaliana eng
dc.subject hypocotyl elongation eng
dc.subject signal-transduction eng
dc.subject cucumis seedlings eng
dc.subject indoleacetic-acid eng
dc.subject plant development eng
dc.subject genomic analysis eng
dc.subject.ddc 500 | Naturwissenschaften ger
dc.title AUXIN-BINDING-PROTEIN1 (ABP1) in phytochrome-B-controlled responses
dc.type article
dc.type Text
dc.relation.essn 1460-2431
dc.relation.issn 0022-0957
dc.bibliographicCitation.issue 16
dc.bibliographicCitation.volume 64
dc.bibliographicCitation.firstPage 5065
dc.bibliographicCitation.lastPage 5074
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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