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Tytuł pozycji:

Mannitol in six autotrophic stramenopiles and Micromonas.

Tytuł:
Mannitol in six autotrophic stramenopiles and Micromonas.
Autorzy:
Dittami SM; Department of Biology, University of Oslo, Oslo, Norway.
Aas HT
Paulsen BS
Boyen C
Edvardsen B
Tonon T
Źródło:
Plant signaling & behavior [Plant Signal Behav] 2011 Aug; Vol. 6 (8), pp. 1237-9. Date of Electronic Publication: 2011 Aug 01.
Typ publikacji:
Journal Article
Język:
English
Imprint Name(s):
Publication: 2015- : Philadelphia, PA : Taylor & Francis
Original Publication: Georgetown, TX : Landes Bioscience
MeSH Terms:
Chlorophyta/*metabolism
Mannitol/*metabolism
Stramenopiles/*metabolism
Chlorophyta/genetics ; Diatoms/genetics ; Diatoms/metabolism ; Phylogeny ; Stramenopiles/genetics
References:
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Substance Nomenclature:
3OWL53L36A (Mannitol)
Entry Date(s):
Date Created: 20110702 Date Completed: 20120326 Latest Revision: 20211020
Update Code:
20240104
PubMed Central ID:
PMC3260733
DOI:
10.4161/psb.6.8.16404
PMID:
21720212
Czasopismo naukowe
Mannitol plays a central role in brown algal physiology since it represents an important pathway used to store photoassimilate. Several specific enzymes are directly involved in the synthesis and recycling of mannitol, altogether forming the mannitol cycle. The recent analysis of algal genomes has allowed tracing back the origin of this cycle in brown seaweeds to a horizontal gene transfer from bacteria, and furthermore suggested a subsequent transfer to the green microalga Micromonas. Interestingly, genes of the mannitol cycle were not found in any of the currently sequenced diatoms, but were recently discovered in pelagophytes and dictyochophytes. In this study, we quantified the mannitol content in a number of ochrophytes (autotrophic stramenopiles) from different classes, as well as in Micromonas. Our results show that, in accordance with recent observations from EST libraries and genome analyses, this polyol is produced by most ochrophytes, as well as the green alga tested, although it was found at a wide range of concentrations. Thus, the mannitol cycle was probably acquired by a common ancestor of most ochrophytes, possibly after the separation from diatoms, and may play different physiological roles in different classes.

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