Picoplanktonic Choricystis species (Chlorococcales, Chlorophyta) and problems surrounding the morphologically similar ‘Nannochloris-like algae’

Krienitz, Lothar; Huss, Volker A. R.; Hümmer, Carola

doi:10.2216/i0031-8884-35-4-332.1

Cited by 57 publications

(68 citation statements)

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“…trebouxioides and "Ch." angustoellipsoidea, in accordance with Krienitz et al (1996Krienitz et al ( , 2004 and Karsten et al (2005). This position of W. reniformis well corresponds with its deeply multi-lobed plastid structure.…”

Section: Resultssupporting

confidence: 73%

Elliptochloris bilobata var. corticola var. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccal green alga

2008

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We investigated a previously unidentified subaerial corticolous strain of the genus Elliptochloris TschermakWoess. The alga shares the generic morphological characters with Elliptochloris bilobata, the type species of the genus, but it has a thicker cell wall of adult globular cells, different chloroplast structure and it also differs in shape of elliptical autospores. The differences of the autospore shape between both species were evaluated using landmark-based geometric morphometrics. The 18S rDNA gene sequence of the new alga forms a monophyletic clade with the authentic strain of E. bilobata within the green algal class Trebouxiophyceae close to representatives of the genus Coccomyxa. We describe the new alga as Elliptochloris bilobata var. corticola var. nov.

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Section: Resultssupporting

confidence: 73%

Elliptochloris bilobata var. corticola var. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccal green alga

2008

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“…The types of older species descriptions were usually figures or rarely specimens, but not strains, and sometimes authentic strains are missing, such as in the case of Choricystis species. This can lead to nomenclatural difficulties: sometimes it is very hard to link the previously described morphospecies with the observed genetic variations, as can be seen in the Choricystis clade (Krienitz et al, 1996;Fawley et al, 2005). Difficulties can also arise from incorrect strain identifications, as we have shown here.…”

Section: Discussionmentioning

confidence: 89%

“…The cellular organization and the cell wall structure were very similar in the two isolates (Wilhelm et al, 1982;Menzel & Wild, 1989), but this is not uncommon among coccoid green algae (Krienitz et al, 1996(Krienitz et al, , 1999(Krienitz et al, , 2011. On the other hand, in the case of strain Mainz 1, only two autospores were formed per mother cell (Wilhelm et al, 1982), in contrast to the two, three or four in the SAG 55.87 strain.…”

Section: Morphological and Ultrastructural Comparisonsmentioning

confidence: 84%

“…On the other hand, in the case of strain Mainz 1, only two autospores were formed per mother cell (Wilhelm et al, 1982), in contrast to the two, three or four in the SAG 55.87 strain. As stated by Krienitz et al (1996), however, the number of autospores may depend on culture conditions. To the best of our knowledge, TEM investigations of the isolates have not been carried out previously, but two strains (SAG 55.87 and UTEX 2502) were studied by light microscopy (Tschermak-Woess, 1999;Yamamoto et al, 2001Yamamoto et al, , 2003.…”

Section: Morphological and Ultrastructural Comparisonsmentioning

confidence: 98%

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One step closer to eliminating the nomenclatural problems of minute coccoid green algae: Pseudochloris wilhelmii, gen. et sp. nov. (Trebouxiophyceae, Chlorophyta)

Somogyi

Felföldi

Solymosi

et al. 2013

European Journal of Phycology

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“…They have been reported from Europe, Asia, North America and Antarctica (Ettl & Gärtner 1995;Krienitz et al 1996;Belykh et al 2000;Cavacini 2001;Nováková 2002;Neustupa & Albrechtová 2003;Fawley et al 2005;Pouneva & Zidarova 2006).…”

Section: Introductionmentioning

confidence: 96%

Karyological and endosymbiotic notes on two Choricystis species (Trebouxiophyceae, Chlorophyta)

2009

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Two species of the genus Choricystis (Choricystis minor and Choricystis chodatii) have been chromosomally surveyed. In addition, their ability to form symbiotic associations with the ciliate Paramecium bursaria was also investigated. Choricystis minor (clone #8931/1 from strain #8931) was isolated from a moss sample collected on Livingston Island, Maritime Antarctica. Choricystis chodatii (clone #3090/1) was derived from strain #3090 Chodat-type culture (loc. Switzerland, lake Geneva). The karyotypes of both species showed a haploid number of five chromosomes and shared some similarity in the chromosome lengths. The absolute chromosome lengths ranged from 1.25 µm to 2.95 µm. Studied species possess equal abilities for endosymbiotic associations with Paramecium bursaria. Descriptions of the species and a short discussion on their taxonomical status are given.

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Picoplanktonic Choricystis species (Chlorococcales, Chlorophyta) and problems surrounding the morphologically similar ‘Nannochloris-like algae’

Cited by 57 publications

References 0 publications

Elliptochloris bilobata var. corticola var. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccal green alga

Elliptochloris bilobata var. corticola var. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccal green alga

One step closer to eliminating the nomenclatural problems of minute coccoid green algae: Pseudochloris wilhelmii, gen. et sp. nov. (Trebouxiophyceae, Chlorophyta)

Karyological and endosymbiotic notes on two Choricystis species (Trebouxiophyceae, Chlorophyta)

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