Evaluation of Structurally Different Carotenoids in Escherichia coli Transformants as Protectants against UV-B Radiation

AUTOR(ES)

Sandmann, Gerhard

FONTE

American Society for Microbiology

RESUMO

Escherichia coli cells transformed with several carotenogenic genes to mediate the formation of ζ-carotene, neurosporene, lycopene, β-carotene, and zeaxanthin were exposed to UV-B radiation. Short-term kinetics revealed that endogenous levels of neurosporene and β-carotene protected E. coli against irradiation with UV-B. Zeaxanthin protected against only the photosensitized UV-B treatment. All other carotenoids were ineffective.

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