Observations on Purpureofilum apyrenoidigerum gen. et sp. nov. from Australia and Bangiopsis subsimplex from India (Stylonematales, Bangiophyceae, Rhodophyta)

West, John A.; Zuccarello, Giuseppe C.; Scott, J. Thad; Pickett‐Heaps, Jeremy D.; Kim, Gwang Hoon

doi:10.1111/j.1440-183.2005.00373.x

Cited by 9 publications

(12 citation statements)

References 42 publications

(53 reference statements)

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“…Th e specimens also coincided, in part, with descriptions by Krishnamurthy (1957) and West et al (2005), although those authors described thalli with ramifi cations -a characteristic not observed in the specimens examined here.…”

Section: Short Communicationmentioning

confidence: 60%

“…No reproductive structures were observed in the specimens analyzed; however, according to West et al (2005), B. subsimplex reproduces by way of monospores that migrate through shuffl ing (when tails are absent) or brief movement (when tails are present). Th e spores are formed either independently or in small packets enclosed within a matrix.…”

Section: Short Communicationmentioning

confidence: 99%

“…Among the fi lamentous genera in the order Stylonematales, Bangiopsis is morphologically similar to Purpureofi lum J.A.West, G.C.Zuccarello & J.L.Scott, although the latter is distinguished by having a diminutive thallus (up to 1 mm), unicellular basal system, cells with a multiple-lobed single chloroplast without a pyrenoid and non-mobile spores not formed in packets (West et al 2005). West et al (2007) examined partial sequences of smallsubunit RNA and the psbA gene (DNA) and observed that in the resulting consensus tree (maximum-likelihood topology) the genera Bangiopsis and Purpureofi lum grouped together with Rhodaphanes J.A.West, G.C.Zuccarello, J.L.Scott & K.A.West -a genus with a diminutive thallus and which is morphologically similar to Stylonema Reinsch.…”

Section: Short Communicationmentioning

confidence: 99%

“…Morphologically, species in this genus are characterized by a fl exible, fi lamentous thallus, with the younger portions uniseriate and older portions multiseriate and thicker; ramifi cations, when present, are sparse, subdichotomous to regular, and sometimes have short and uniseriate proliferations on the thallus; the cells are rounded, and have star-shaped chloroplasts with pyrenoids; reproduction occurs by way of monosporangia (Børgesen 1915;Krishnamurthy 1957;West et al 2005).…”

Section: Short Communicationmentioning

confidence: 99%

“…Th e spores are formed either independently or in small packets enclosed within a matrix. Th ese spore packets contain 5-20 spores and the cell division patterns give the packets a polyhedral parenchymatous appearance (West et al 2005).…”

Section: Short Communicationmentioning

confidence: 99%

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Bangiopsis subsimplex (Mont.) F. Schmitz (Stylonematales, Rhodophyta) on the northeastern coast of Brazil

2013

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We report here the fi rst occurrence of Bangiopsis subsimplex (Mont.) F.Schmitz (Rhodophyta) for the northeastern coast of Brazil. Th e specimen was isolated from a laboratory sample of mollusk shells collected in Baía de Todos os Santos (Bimbarras Island, Brazil) and was held in sterilized seawater (33 UPS) enriched with 25% Provasoli solution. In the American Atlantic region, B. subsimplex presents a northern distribution limit at French Guiana and a southern limit at São Paulo. We conclude that the distribution of B. subsimplex has expanded, since the species was once known only to the southeastern Brazil, specifi cally to São Paulo.

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Section: Short Communicationmentioning

confidence: 60%

Section: Short Communicationmentioning

confidence: 99%

Section: Short Communicationmentioning

confidence: 99%

Section: Short Communicationmentioning

confidence: 99%

Section: Short Communicationmentioning

confidence: 99%

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Bangiopsis subsimplex (Mont.) F. Schmitz (Stylonematales, Rhodophyta) on the northeastern coast of Brazil

2013

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Global sampling reveals low genetic diversity withinCompsopogon(Compsopogonales, Rhodophyta)

Necchi

Fo.

Salomaki

et al. 2013

European Journal of Phycology

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Twenty-five specimens of the freshwater red alga Compsopogon were collected from locations in North America, South America, Europe, Asia, Australasia and Oceania, and from an aquarium, with the goal of determining genetic diversity among specimens and ascertaining the number of phylogenetic species. Specimens were morphologically identified as having either the 'caeruleus' morphology, with regular polyhedral cortical cells, or the 'leptoclados' morphology, with irregular cortical cells with rhizoidal outgrowths. The 'leptoclados' morphology has been used by some researchers to distinguish the genus Compsopogonopsis from Compsopogon, or at least to distinguish C. leptoclados from other Compsopogon species. Sequence data for the rbcL gene and cox1 barcoding region were obtained for most specimens. In addition, SSU and partial LSU (barcode) rDNA were explored for a few specimens, but all sequences were identical. For the 25 newly generated and eight previously published rbcL gene data, there were seven unique haplotypes, but the sequence divergence was very low (≤7 bp, ≤ 0.7%). One haplotype was widespread, represented by 21 specimens from diverse locations in all regions sampled. Likewise, the 22 new and one previously published cox1 barcode region sequences yielded seven unique haplotypes with little sequence divergence (≤13 bp, ≤ 2.0%). One haplotype was widespread, being shared among 16 specimens from all regions. The combined molecular and morphological data showed no genetic differentiation between the 'caeruleus' and 'leptoclados' morphologies. The ubiquitous distribution of Compsopogon in tropical/subtropical regions and its low genetic variation are probably facilitated by the alga's ability to tolerate a wide range of stream conditions and its propagation via asexual spores. Given the findings of previous culture-based studies, morphometric research and field observations, coupled with the results of our study, we conclude there is only a single monospecific genus worldwide and that the species is correctly called C. caeruleus, since this is the oldest validly published name; all other previously described species of Compsopogon and Compsopogonopsis are synonyms.

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Estimates of nuclear DNA content in red algal lineages

Kapraun

Freshwater

2012

AoB PLANTS

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Observations on Purpureofilum apyrenoidigerum gen. et sp. nov. from Australia and Bangiopsis subsimplex from India (Stylonematales, Bangiophyceae, Rhodophyta)

Cited by 9 publications

References 42 publications

Bangiopsis subsimplex (Mont.) F. Schmitz (Stylonematales, Rhodophyta) on the northeastern coast of Brazil

Bangiopsis subsimplex (Mont.) F. Schmitz (Stylonematales, Rhodophyta) on the northeastern coast of Brazil

Global sampling reveals low genetic diversity withinCompsopogon(Compsopogonales, Rhodophyta)

Estimates of nuclear DNA content in red algal lineages

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