Universität zu Köln

Rana, Shivani, Valentin, Klaus, Bartsch, Inka and Gloeckner, Gernot (2019). Loss of a chloroplast encoded function could influence species range in kelp. Ecol. Evol., 9 (15). S. 8759 - 8771. HOBOKEN: WILEY. ISSN 2045-7758

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Abstract

Kelps are important providers and constituents of marine ecological niches, the coastal kelp forests. Kelp species have differing distribution ranges, but mainly thrive in temperate and arctic regions. Although the principal factors determining biogeographic distribution ranges are known, genomics could provide additional answers to this question. We sequenced DNA from two Laminaria species with contrasting distribution ranges, Laminaria digitata and Laminaria solidungula. Laminaria digitata is found in the Northern Atlantic with a southern boundary in Brittany (France) or Massachusetts (USA) and a northern boundary in the Arctic, whereas L. solidungula is endemic to the Arctic only. From the raw reads of DNA, we reconstructed both chloroplast genomes and annotated them. A concatenated data set of all available brown algae chloroplast sequences was used for the calculation of a robust phylogeny, and sequence variations were analyzed. The two Laminaria chloroplast genomes are collinear to previously analyzed kelp chloroplast genomes with important exceptions. Rearrangements at the inverted repeat regions led to the pseudogenization of ycf37 in L. solidungula, a gene possibly required under high light conditions. This defunct gene might be one of the reasons why the habitat range of L. solidungula is restricted to lowlight sublittoral sites in the Arctic. The inheritance pattern of single nucleotide polymorphisms suggests incomplete lineage sorting of chloroplast genomes in kelp species. Our analysis of kelp chloroplast genomes shows that not only evolutionary information could be gleaned from sequence data. Concomitantly, those sequences can also tell us something about the ecological conditions which are required for species well-being.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rana, Shivani UNSPECIFIED UNSPECIFIED UNSPECIFIED Valentin, Klaus UNSPECIFIED UNSPECIFIED UNSPECIFIED Bartsch, Inka UNSPECIFIED UNSPECIFIED UNSPECIFIED Gloeckner, Gernot UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-145704
DOI:	10.1002/ece3.5428
Journal or Publication Title:	Ecol. Evol.
Volume:	9
Number:	15
Page Range:	S. 8759 - 8771
Date:	2019
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	2045-7758
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MULTIPLE SEQUENCE ALIGNMENT; GENOME; SOFTWARE; DYNAMICS Multiple languages Ecology; Evolutionary Biology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14570