Abstract
Nicotine has a profound influence on the carotenoid metabolism in halophilic Archaea of the class Halobacteria. In a study of Halobacterium salinarum, Haloarcula marismortui and Halorubrum sodomense, using different analytical techniques to monitor the production of different carotenoids as a function of the presence of nicotine, we showed that the formation of α-bacterioruberin was inhibited in all. In Hbt. salinarum, addition of nicotine led to a significant change in the color of the culture due to the accumulation of lycopene, in addition to the formation of bisanhydrobacterioruberin which does not differ in color from α-bacterioruberin. Very little or no lycopene was formed in Har. marismortui and in Hrr. sodomense; instead bisanhydrobacterioruberin was the only major carotenoid found in nicotine-amended cultures. The findings are discussed in the framework of the recently elucidated biochemical pathway for the formation of the different carotenoid pigments encountered in the Halobacteria.
| Original language | English |
|---|---|
| Pages (from-to) | 359-366 |
| Number of pages | 8 |
| Journal | Extremophiles |
| Volume | 22 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1 May 2018 |
Bibliographical note
Publisher Copyright:© 2018, Springer Japan KK, part of Springer Nature.
Keywords
- Bacterioruberin
- Carotenoids
- Haloarchaea
- Nicotine