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In planta cleavage of carotenoids by Arabidopsis carotenoid cleavage dioxygenase 4 in transgenic rice plants
- Source :
- Plant Biotechnology Reports. 10:291-300
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- A family of carotenoid cleavage dioxygenases (CCDs) produces diverse apocarotenoid compounds via the oxidative cleavage of carotenoids as substrates. Their types are highly dependent on the action of the CCD family to cleave the double bonds at the specific position on the carotenoids. Here, we report in vivo function of the AtCCD4 gene, one of the nine members of the Arabidopsis CCD gene family, in transgenic rice plants. Using two independent single-copy rice lines overexpressing the AtCCD4 transgene, the targeted analysis for carotenoids and apocarotenoids showed the markedly lowered levels of β-carotene (74 %) and lutein (72 %) along with the changed levels of two β-carotene (C40) cleavage products, a two-fold increase of β-ionone (C13) and de novo generation of β-cyclocitral (C10) at lower levels, compared with non-transgenic rice plants. It suggests that β-carotene could be the principal substrate being cleaved at 9–10 (9′–10′) for β-ionone and 7–8 (7′–8′) positions for β-cyclocitral by AtCCD4. This study is in planta report on the generation of apocarotenal volatiles from carotenoid substrates via cleavage by AtCCD4. We further verified that the production of these volatiles was due to the action of exogenous AtCCD4 and not the expression of endogenous rice CCD genes (OsCCD1, 4a, and 4b).
- Subjects :
- 0106 biological sciences
0301 basic medicine
chemistry.chemical_classification
Transgene
food and beverages
Plant Science
Biology
Cleavage (embryo)
biology.organism_classification
01 natural sciences
Genetically modified rice
03 medical and health sciences
chemistry.chemical_compound
030104 developmental biology
Apocarotenal
chemistry
Biochemistry
Arabidopsis
Apocarotenoid
Gene family
Carotenoid
010606 plant biology & botany
Biotechnology
Subjects
Details
- ISSN :
- 18635474 and 18635466
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Plant Biotechnology Reports
- Accession number :
- edsair.doi...........1b1bfebf748ad8cf66c966cf13c372c2