Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Adaptation to extreme Antarctic environments revealed by the genome of a sea ice green alga
Zhang, Z.; Qu, C.; Zhang, K.; He, Y.; Zhao, X.; Yang, L.; Zheng, Z.; Ma, X.; Wang, X.; Wang, W.; Wang, K.; Li, D.; Zhang, L.; Zhang, X.; Su, D.; Chang, X.; Zhou, M.; Gao, D.; Jiang, W.; Leliaert, F.; Bhattacharya, D.; De Clerck, O.; Zhong, B.; Miao, J. (2020). Adaptation to extreme Antarctic environments revealed by the genome of a sea ice green alga. Curr. Biol. 30(17): 3330-3341. https://hdl.handle.net/10.1016/j.cub.2020.06.029
In: Current Biology. Cell Press: London. ISSN 0960-9822; e-ISSN 1879-0445, meer
|  |
| Auteurs | | Top |
- Zhang, Z.
- Qu, C.
- Zhang, K.
- He, Y.
- Zhao, X.
- Yang, L.
- Zheng, Z.
- Ma, X.
|
- Wang, X.
- Wang, W.
- Wang, K.
- Li, D.
- Zhang, L.
- Zhang, X.
- Su, D.
- Chang, X.
|
- Zhou, M.
- Gao, D.
- Jiang, W.
- Leliaert, F., meer
- Bhattacharya, D.
- De Clerck, O., meer
- Zhong, B.
- Miao, J.
|
| Abstract |
The unicellular green alga Chlamydomonas sp. ICE-L thrives in polar sea ice, where it tolerates extreme low temperatures, high salinity, and broad seasonal fluctuations in light conditions. Despite the high interest in biotechnological uses of this species, little is known about the adaptations that allow it to thrive in this harsh and complex environment. Here, we assembled a high-quality genome sequence of ∼542 Mb and found that retrotransposon proliferation contributed to the relatively large genome size of ICE-L when compared to other chlorophytes. Genomic features that may support the extremophilic lifestyle of this sea ice alga include massively expanded gene families involved in unsaturated fatty acid biosynthesis, DNA repair, photoprotection, ionic homeostasis, osmotic homeostasis, and reactive oxygen species detoxification. The acquisition of multiple ice binding proteins through putative horizontal gene transfer likely contributed to the origin of the psychrophilic lifestyle in ICE-L. Additional innovations include the significant upregulation under abiotic stress of several expanded ICE-L gene families, likely reflecting adaptive changes among diverse metabolic processes. Our analyses of the genome, transcriptome, and functional assays advance general understanding of the Antarctic green algae and offer potential explanations for how green plants adapt to extreme environments. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
