psbA based molecular analysis of cross-feeding experiments suggests that Dinophysis acuta does not harbour permanent plastids

Raho, Nicolás; Jaén, David; Mamán, Luz; Rial, Pilar; Marı́n, Irma

doi:10.1016/j.hal.2014.03.003

Cited by 10 publications

(22 citation statements)

References 53 publications

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“…from M. coatsi in less than a day. The work of Park et al (2010) and Raho et al (2014) also support the conclusion that Dinophysis species can distinguish between plastid types. In the former study, cross-feeding/ starvation experiments were used to show that D. caudata retained T. amphioxeia plastids from M. cf.…”

Section: Fate Of Green Plastids In Dinophysissupporting

confidence: 60%

“…Several molecular studies of plastid encoding genes in Dinophysis species have indicated the presence of cryptophyte plastids usually of a Teleaulax amphioxeia or Geminigera cryophila type (Takishita et al, 2002;Hackett et al, 2003;Garcia-Cuetos et al, 2010;Minnhagen and Janson, 2006;Nishitani et al, 2010;Qiu et al, 2011;Kim et al, 2012a;Raho et al, 2014;Stern et al, 2014). Plastid sequences representative of several other algal taxa (the cryptophytes Chroomonas sp., Proteomonas sulcata, Teleaulax acuta, and Rhodomonas/Storeatula; chlorophyte, florideophyte, haptophyte, raphidophyte, and cyanobacterium) have been reported to accompany the T. amphioxeia and/or G. cryophila sequences (Takishita et al, 2002;Minnhagen and Janson, 2006;Nishitani et al, 2010;Qiu et al, 2011;Kim et al, 2012a;Stern et al, 2014).…”

Section: Source Of Green Plastids In Dinophysismentioning

confidence: 99%

“…As mentioned earlier, laboratory studies have shown that Dinophysis acuminata, Dinophysis acuta, Dinophysis caudata, Dinophysis fortii, and Dinophysis infundibulus ingest Mesodinium rubrum or M. cf. rubrum, apparently retaining plastids, but digesting the remainder of the prey (Nishitani et al, 2008a,b;Park et al, 2006Park et al, , 2008Park et al, , 2010Kim et al, 2012b;Raho et al, 2014). In addition, a few field studies have reported apparent digestion of prey by Dinophysis species.…”

Section: Fate Of Green Plastids In Dinophysismentioning

confidence: 99%

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Fate of green plastids in Dinophysis caudata following ingestion of the benthic ciliate Mesodinium coatsi: Ultrastructure and psbA gene

et al. 2015

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Section: Fate Of Green Plastids In Dinophysissupporting

confidence: 60%

Section: Source Of Green Plastids In Dinophysismentioning

confidence: 99%

Section: Fate Of Green Plastids In Dinophysismentioning

confidence: 99%

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Fate of green plastids in Dinophysis caudata following ingestion of the benthic ciliate Mesodinium coatsi: Ultrastructure and psbA gene

et al. 2015

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“…from North Western Spain (Raho et al. ). CCMP2045/CCMP2293 and the Spanish isolate of Falcomonas sp.…”

Section: Resultsmentioning

confidence: 99%

Baffinella frigidus gen. et sp. nov. (Baffinellaceae fam. nov., Cryptophyceae) from Baffin Bay: Morphology, pigment profile, phylogeny, and growth rate response to three abiotic factors

Daugbjerg

Norlin

Lovejoy

2018

Journal of Phycology

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Twenty years ago an Arctic cryptophyte was isolated from Baffin Bay and given strain number CCMP2045. Here, it was described using morphology, water- and non-water soluble pigments and nuclear-encoded SSU rDNA. The influence of temperature, salinity, and light intensity on growth rates was also examined. Microscopy revealed typical cryptophyte features but the chloroplast color was either green or red depending on the light intensity provided. Phycoerythrin (Cr-PE 566) was only produced when cells were grown under low-light conditions (5 μmol photons · m · s ). Non-water-soluble pigments included chlorophyll a, c and five major carotenoids. Cells measured 8.2 × 5.1 μm and a tail-like appendage gave them a comma-shape. The nucleus was located posteriorly and a horseshoe-shaped chloroplast contained a single pyrenoid. Ejectosomes of two sizes and a nucleomorph anterior to the pyrenoid were discerned in TEM. SEM revealed a slightly elevated vestibular plate in the vestibulum. The inner periplast component consisted of slightly overlapping hexagonal plates arranged in 16-20 oblique rows. Antapical plates were smaller and their shape less profound. Temperature and salinity studies revealed CCMP2045 as stenothermal and euryhaline and growth was saturated between 5 and 20 μmol photons · m · s . The phylogeny based on SSU rDNA showed that CCMP2045 formed a distinct clade with CCMP2293 and Falcomonas sp. isolated from Spain. Combining pheno- and genotypic data, the Arctic cryptophyte could not be placed in an existing family and genus and therefore Baffinellaceae fam. nov. and Baffinella frigidus gen. et sp. nov. were proposed.

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“…An additional strain belonging to Falcomonas is blue‐green in appearance and contains Cr‐PC 569 (Hill , Clay and Kugrens ), while Raho et al. () report that CCMP 2045 is 84.6% similar in sequence to known Falcomonas strains. Also, our CCMP 2293 is an Arctic isolate grown at 4°C, while F. daucoides is reported to be grown at 18°C (Clay and Kugrens ).…”

Section: Discussionmentioning

confidence: 99%

Light capture and pigment diversity in marine and freshwater cryptophytes

Cunningham

Greenwold

Lachenmyer

et al. 2018

Journal of Phycology

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Phenotypic traits associated with light capture and phylogenetic relationships were characterized in 34 strains of diversely pigmented marine and freshwater cryptophytes. Nuclear SSU and partial LSU rDNA sequence data from 33 of these strains plus an additional 66 strains produced a concatenated rooted maximum likelihood tree that classified the strains into 7 distinct clades. Molecular and phenotypic data together support: (i) the reclassification of Cryptomonas irregularis NIES 698 to the genus Rhodomonas, (ii) revision of phycobiliprotein (PBP) diversity within the genus Hemiselmis to include cryptophyte phycocyanin (Cr‐PC) 569, (iii) the inclusion of previously unidentified strain CCMP 2293 into the genus Falcomonas, even though it contains cryptophyte phycoerythrin 545 (Cr‐PE 545), and (iv) the inclusion of previously unidentified strain CCMP 3175, which contains Cr‐PE 545, in a clade with PC‐containing Chroomonas species. A discriminant analysis‐based model of group membership correctly predicted 70.6% of the clades using three traits: PBP concentration · cell−1, the wavelength of PBP maximal absorption, and habitat. Non‐PBP pigments (alloxanthin, chl‐a, chl‐c2, α‐carotene) did not contribute significantly to group classification, indicating the potential plasticity of these pigments and the evolutionary conservation of the PBPs. Pigment data showed evidence of trade‐offs in investments in PBPs vs. chlorophylls (a +c2).

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psbA based molecular analysis of cross-feeding experiments suggests that Dinophysis acuta does not harbour permanent plastids

Cited by 10 publications

References 53 publications

Fate of green plastids in Dinophysis caudata following ingestion of the benthic ciliate Mesodinium coatsi: Ultrastructure and psbA gene

Fate of green plastids in Dinophysis caudata following ingestion of the benthic ciliate Mesodinium coatsi: Ultrastructure and psbA gene

Baffinella frigidus gen. et sp. nov. (Baffinellaceae fam. nov., Cryptophyceae) from Baffin Bay: Morphology, pigment profile, phylogeny, and growth rate response to three abiotic factors

Light capture and pigment diversity in marine and freshwater cryptophytes

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