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000056272 0247_ $$2DOI$$a10.1111/j.1529-8817.2007.00325.x
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000056272 084__ $$2WoS$$aPlant Sciences
000056272 084__ $$2WoS$$aMarine & Freshwater Biology
000056272 1001_ $$0P:(DE-HGF)0$$aVanormelingen, P.$$b0
000056272 245__ $$aThe systematics of a small spineless Desmodesmus species, D. Costato-Granulatus (Sphaeropleales, Chlorophyceae) based on ITS2 rDNA sequence analyses and cell wall morphology
000056272 260__ $$aOxford [u.a.]$$bWiley-Blackwell$$c2007
000056272 300__ $$a378 - 396
000056272 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000056272 440_0 $$08162$$aJournal of Phycology$$v43$$x0022-3646
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000056272 520__ $$aDesmodesmus species taxonomy is one of the most long-standing issues in green microalgal systematics due to problems associated with phenotypic plasticity. Whereas more recent species descriptions and identifications are mainly based on cell wall structures and the use of cultures, comparisons with molecular phylogenies are largely lacking. In this study, the phylogenetic relationships between 22 clones identified as Desmodesmus costato-granulatus (Skuja) E. H. Hegew. were assessed using ITS2 rDNA sequence data in combination with cell wall morphology. The unrooted ITS2 phylogeny showed that the clones cluster into five groups, which also differ in their cell wall structures. Therefore, the taxon is split into five species: D. costato-granulatus, D. elegans, D. fennicus, D. regularis, and D. ultrasquamatus. Compared with other Desmodesmus species, intraspecific sequence variation is extensive and may contain additional (pseudo)cryptic diversity. Compensatory base changes were near-absent within the species and varied from one to 11 between species. Relationships among the species were unresolved. Despite this, they clustered together with the two other Desmodesmus species having a combination of small and large warts in a well-supported lineage. Remarkably, ITS2 sequence variation in this lineage is as high as between all other included Desmodesmus species, even though the morphology of its members is rather uniform.
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000056272 65320 $$2Author$$acell wall structure
000056272 65320 $$2Author$$acompensatory base change
000056272 65320 $$2Author$$aDesmodesmus
000056272 65320 $$2Author$$aITS2 rDNA
000056272 65320 $$2Author$$anew species
000056272 65320 $$2Author$$asecondary structure
000056272 65320 $$2Author$$aspecies delimitation
000056272 7001_ $$0P:(DE-Juel1)VDB575$$aHegewald, E.$$b1$$uFZJ
000056272 7001_ $$0P:(DE-HGF)0$$aBraband, A.$$b2
000056272 7001_ $$0P:(DE-HGF)0$$aKitschke, M.$$b3
000056272 7001_ $$0P:(DE-HGF)0$$aFriedl, Th.$$b4
000056272 7001_ $$0P:(DE-HGF)0$$aSabbe, K.$$b5
000056272 7001_ $$0P:(DE-HGF)0$$aVyverman, W.$$b6
000056272 773__ $$0PERI:(DE-600)1478748-9$$a10.1111/j.1529-8817.2007.00325.x$$gVol. 43, p. 378 - 396$$p378 - 396$$q43<378 - 396$$tJournal of phycology$$v43$$x0022-3646$$y2007
000056272 8567_ $$uhttp://dx.doi.org/10.1111/j.1529-8817.2007.00325.x
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