Color recycling: metabolization of apocarotenoid degradation products suggests carbon regeneration via primary metabolic pathways.

ABSTRACT:

Key message

Analysis of carotenoid-accumulating roots revealed that oxidative carotenoid degradation yields glyoxal and methylglyoxal. Our data suggest that these compounds are detoxified via the glyoxalase system and re-enter primary metabolic pathways. Carotenoid levels in plant tissues depend on the relative rates of synthesis and degradation. We recently identified redox enzymes previously known to be involved in the detoxification of fatty acid-derived reactive carbonyl species which were able to convert apocarotenoids into corresponding alcohols and carboxylic acids. However, their subsequent metabolization pathways remain unresolved. Interestingly, we found that carotenoid-accumulating roots have increased levels of glutathione, suggesting apocarotenoid glutathionylation to

SUBMITTER: Koschmieder J 

PROVIDER: S-EPMC9035014 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature