| 001 | 22168 | ||
| 005 | 20200423203244.0 | ||
| 024 | 7 | _ | |2 pmid |a pmid:22513258 |
| 024 | 7 | _ | |2 pmc |a pmc:PMC3349566 |
| 024 | 7 | _ | |2 DOI |a 10.1186/1471-2229-12-50 |
| 024 | 7 | _ | |2 WOS |a WOS:000304009900001 |
| 024 | 7 | _ | |2 Handle |a 2128/7510 |
| 037 | _ | _ | |a PreJuSER-22168 |
| 041 | _ | _ | |a eng |
| 082 | _ | _ | |a 580 |
| 084 | _ | _ | |2 WoS |a Plant Sciences |
| 100 | 1 | _ | |0 P:(DE-HGF)0 |a Fiore, A. |b 0 |
| 245 | _ | _ | |a A quadruple mutant of Arabidopsis reveals a novel activity for LUT1/CYP97C1 in carotene hydroxylation and a regulatory role of xanthophylls on determination of the PSI/PSII ratio |
| 260 | _ | _ | |a London |b BioMed Central |c 2012 |
| 300 | _ | _ | |a 50 |
| 336 | 7 | _ | |a Journal Article |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
| 336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
| 336 | 7 | _ | |a article |2 DRIVER |
| 440 | _ | 0 | |0 26243 |a BMC Plant Biology |v 12 |
| 500 | _ | _ | |a Work supported by the Italian ministry of Research, special fund for basic research (PRIN 2008XB774B), and by the European Commission, Metapro project. |
| 520 | _ | _ | |a Xanthophylls are oxygenated carotenoids playing an essential role as structural components of the photosynthetic apparatus. Xanthophylls contribute to the assembly and stability of light-harvesting complex, to light absorbance and to photoprotection. The first step in xanthophyll biosynthesis from α- and β-carotene is the hydroxylation of ε- and β-rings, performed by both non-heme iron oxygenases (CHY1, CHY2) and P450 cytochromes (LUT1/CYP97C1, LUT5/CYP97A3). The Arabidopsis triple chy1chy2lut5 mutant is almost completely depleted in β-xanthophylls.Here we report on the quadruple chy1chy2lut2lut5 mutant, additionally carrying the lut2 mutation (affecting lycopene ε-cyclase). This genotype lacks lutein and yet it shows a compensatory increase in β-xanthophylls with respect to chy1chy2lut5 mutant. Mutant plants show an even stronger photosensitivity than chy1chy2lut5, a complete lack of qE, the rapidly reversible component of non-photochemical quenching, and a peculiar organization of the pigment binding complexes into thylakoids. Biochemical analysis reveals that the chy1chy2lut2lut5 mutant is depleted in Lhcb subunits and is specifically affected in Photosystem I function, showing a deficiency in PSI-LHCI supercomplexes. Moreover, by analyzing a series of single, double, triple and quadruple Arabidopsis mutants in xanthophyll biosynthesis, we show a hitherto undescribed correlation between xanthophyll levels and the PSI-PSII ratio. The decrease in the xanthophyll/carotenoid ratio causes a proportional decrease in the LHCII and PSI core levels with respect to PSII.The physiological and biochemical phenotype of the chy1chy2lut2lut5 mutant shows that (i) LUT1/CYP97C1 protein reveals a major β-carotene hydroxylase activity in vivo when depleted in its preferred substrate α-carotene; (ii) xanthophylls are needed for normal level of Photosystem I and LHCII accumulation. |
| 536 | _ | _ | |0 G:(DE-Juel1)FUEK407 |2 G:(DE-HGF) |a Terrestrische Umwelt |c P24 |x 0 |
| 588 | _ | _ | |a Dataset connected to Web of Science, Pubmed |
| 650 | _ | 2 | |2 MeSH |a Arabidopsis: genetics |
| 650 | _ | 2 | |2 MeSH |a Arabidopsis: metabolism |
| 650 | _ | 2 | |2 MeSH |a Arabidopsis Proteins: genetics |
| 650 | _ | 2 | |2 MeSH |a Arabidopsis Proteins: metabolism |
| 650 | _ | 2 | |2 MeSH |a Mutation |
| 650 | _ | 2 | |2 MeSH |a Photosystem I Protein Complex: metabolism |
| 650 | _ | 2 | |2 MeSH |a Photosystem II Protein Complex: metabolism |
| 650 | _ | 2 | |2 MeSH |a Xanthophylls: metabolism |
| 650 | _ | 2 | |2 MeSH |a beta Carotene: metabolism |
| 650 | _ | 7 | |0 0 |2 NLM Chemicals |a Arabidopsis Proteins |
| 650 | _ | 7 | |0 0 |2 NLM Chemicals |a Photosystem I Protein Complex |
| 650 | _ | 7 | |0 0 |2 NLM Chemicals |a Photosystem II Protein Complex |
| 650 | _ | 7 | |0 0 |2 NLM Chemicals |a Xanthophylls |
| 650 | _ | 7 | |0 7235-40-7 |2 NLM Chemicals |a beta Carotene |
| 650 | _ | 7 | |2 WoSType |a J |
| 700 | 1 | _ | |0 P:(DE-HGF)0 |a Dall'Osto, L. |b 1 |
| 700 | 1 | _ | |0 P:(DE-HGF)0 |a Cazzaniga, S. |b 2 |
| 700 | 1 | _ | |0 P:(DE-HGF)0 |a Diretto, G. |b 3 |
| 700 | 1 | _ | |0 P:(DE-HGF)0 |a Giuliano, G. |b 4 |
| 700 | 1 | _ | |0 P:(DE-Juel1)VDB38860 |a Bassi, R. |b 5 |u FZJ |
| 773 | _ | _ | |0 PERI:(DE-600)2059868-3 |a 10.1186/1471-2229-12-50 |g Vol. 12, p. 50 |p 50 |q 12<50 |t BMC plant biology |v 12 |x 1471-2229 |y 2012 |
| 856 | 7 | _ | |2 Pubmed Central |u http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3349566 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/22168/files/FZJ-22168.pdf |y OpenAccess |z Published final document. |
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| 914 | 1 | _ | |a erscheint nur online |y 2012 |
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