Morphological and taxonomy of Bostrychia and Stictosiphonia (Rhodomelaceae/Rhodophyta)

King, RJ; Puttock, CF

doi:10.1071/sb9890001

Cited by 82 publications

(84 citation statements)

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“…5D). These stichidia are quite similar to the spermatangial stichidia borne on monosiphonous laterals of some polysiphonous B. moritziana (King and Puttock 1989).…”

Section: Filament Growth and Branchingsupporting

confidence: 53%

“…Pericental cells on Bostrychia are further transversely divided one or more times into tier cells (Hommersand 1963, King andPuttock 1989), in some species cortication is also evident (King and Puttock 1989). Sexual reproduction is by an alternation of isomorphic generations (Polysiphonia-type) with reproductive structures (tetrasporangia, spermatangia, carpogonia).…”

Section: Molecular Analysesmentioning

confidence: 99%

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Monosiphonous growth and cell-death in an unusual Bostrychia (Rhodomelaceae, Rhodophyta): B. anomala sp. nov.

West¹,

Goër²,

Zuccarello³

2013

ALGAE

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A morphologically distinct lineage within the Bostrychia moritziana-B. radicans species complex is described as a new species. Bostrychia anomala has thalli with branched monosiphonous filaments with apical cell divisions. The species has terminal tetrasporangial stichidia, each subtending cell bearing tetrasporangia with 2 cover cells. Discharged spores divide transversely, the lower cell first forming a narrow rhizoid and the upper cell forming a monosiphonous shoot. Females have subterminal procarps and males have terminal spermatangial stichidia. Carposporophytes are spherical. Isolates in culture show a pattern of cell death not associated with injury, reminiscent of programmed cell death. Bostrychia anomola shows cell death at intervals along the filaments resulting in division of adjacent cells on either side of the dead cell re-joining the filament; cell division of only one adjacent cell resulting in branching at that site; or filaments fragmenting at the cell death point with adjacent cells forming new apical cells, a means of thallus propagation. The cell death pattern could be a method of filament propagation in the mangrove environment where sexual reproduction is rare.

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“…5D). These stichidia are quite similar to the spermatangial stichidia borne on monosiphonous laterals of some polysiphonous B. moritziana (King and Puttock 1989).…”

Section: Filament Growth and Branchingsupporting

confidence: 53%

Section: Molecular Analysesmentioning

confidence: 99%

Monosiphonous growth and cell-death in an unusual Bostrychia (Rhodomelaceae, Rhodophyta): B. anomala sp. nov.

West¹,

Goër²,

Zuccarello³

2013

ALGAE

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“…Bostrychia: merged Stictosiphonia into Bostrychia based on molecular evidence. Tier cell formation (2 tier cells versus 3-5 tier cells per axial cell) was the morphological criterion previously used to distinguish the two genera (King and Puttock 1989). The attachment structures are usually peripherohaptera and cladohaptera.…”

Section: Gigartinales Caulacanthaceaementioning

confidence: 99%

Observations on some mangrove-associated algae from the western Pacific (Guam, Chuuk, Kosrae, and Pohnpei)

West¹,

Kamiya²,

Goër³

et al. 2013

ALGAE

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The mangrove algal flora of Guam and the Federated States of Micronesia has been poorly explored. We add to our knowledge of this region by observations of collections from these regions. This paper presents new and additional records of: Rhodophyta-Acrochaetium globosum, Colaconema sp., Caulacanthus indicus, Bostrychia moritziana / B. radicans, B. radicosa, B. simpliciuscula, B. kelanensis and B. tenella, Murrayella periclados, and Caloglossa ogasawaraensis; Chlorophyta-Boodleopsis carolinensis; and Phaeophyceae-Dictyota adnata, Dictyotopsis propagulifera, and Canistrocarpus cervicornis. Most specimens were cultured to investigate their reproductive biology and many specimens were further identified using molecular data. Low molecular weight carbohydrates (dulcitol, sorbitol, and digeneaside) were identified in samples of B. radicosa and B. simpliciuscula. We also present data on manganese-rich deposits found on B. simpliciuscula and B. tenella in culture, possibly formed by epiphytic bacteria.

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“…de ramificação e número de ordem de ramos, presença ou ausência de corticação nos eixos principais, presença e extensão de monossifonia ou polissifonia nos râmulos de última ordem, forma dos ápices (completamente, raramente ou nunca recurvados), diâmetro dos ramos laterais de primeira ordem, número de camadas de células pericentrais por célula axial, número de células pericentrais por célula axial, estrutura e tamanho das células, forma e tamanho dos estiquídios e dos cistocarpos (Falkenberg 1901, King & Puttock 1989, Zuccarello & West 2008, Fontes 2012 . (Fig.8).…”

Section: )unclassified

“…Modificado de King & Puttock (1989 (Post 1933, 1939, Joly 1965, Cordeiro-Marino 1978, Fontes 2012, Zuccarello et al 2015. As duas espécies foram sinonimizadas por King et al (1988) Essa espécie é distinta de B. moritziana apenas pelos ramos de última ordem que são monossifônicos nesta última (Joly 1965e Cordeiro-Marino 1978 radicans f. moniliforme Post), King & Puttock 1989, Fontes 2012, Almeida 2013. A forma moniliforme de B. radicans foi elevada à categoria específica como B.…”

Section: )unclassified

Diversidade de espécies de macroalgas associadas ao Manguezal da Ilha Barnabé, Baixada Santista, SP, Brasil, com base em \"DNA Barcode\"

Sena¹

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Studies on the diversity of macroalgae from mangroves in Brazil have been based only on morphological approaches, in which characters used are unstable and uninformative for the species identification and delimitation. In this context, macroalgae of mangroves were investigated for the first time in the Brazilian coast using a molecular approach, having as target of our study the mangrove of the Barnabé Island, Santos, São Paulo.DNA Barcode markers UPA and COI-5P were used, besides the rbcL, largely used for phylogenetic inferences, and also SSU rDNA. In addition to these, the ITS and tufA markers were used exclusively for the green algae, the latter unsuccessfully. Fifteen species were recorded for the studied area, ten Rhodophyta and five Chlorophyta. Of these, two are new records for the State of São Paulo, Caloglossa apomeiotica e Boodleopsis vaucherioidea. Of the four species of the genus Bostrychia identified in this study: "Bostrychia calliptera ", B. montagnei, B. moritziana and B. radicans, only B. montagnei proved to be a molecular and morphologically well-defined species. The other species formed complexes with different molecular lineages. For B. radicans and B. moritziana, the analyses showed three and two molecular lineages, respectively, of the seven identified for the B. radicans/B. moritziana complex in the literature. The taxon identified as "B. calliptera" showed high molecular divergence with sequences of B.calliptera from Brazil, presenting morphology "B. pinnata", a taxon currently reduced to a synonym of B. calliptera. Caloglossa species, except C. ogasawaraensis, are difficult to identify due to the subtle morphological characters considered of diagnostic value, and their considerable phenotypic plasticity. Caloglossa apomeiotica, C. confusa and C. leprieurii were identified primarily by the use of molecular markers. Caloglossa apomeiotica can be segregated from the others by the presence of bisporangia, which makes unreliable morphological identification when collected infertile thalli, while C. confusa has strongly constricted thallus nodes. The molecular data obtained for Catenella caespitosa from SSU sequences suggest that the citations of this species for the Brazilian coast may be misleading since they have high intraspecific divergence with C. caespitosa from database. Due to the lack of sequences from the type locality, sequences of DNA barcode markers, and a major molecular sampling of Catenella species in databases, became impossible to reach a conclusive result. The obtaining of sequences for green algae was extremely problematic, making impracticable a broader comparison between the collected species. Of the two collected species of Boodleopsis, only two partial sequences of rbcL were obtained for B. vaucherioidea and none for B.pusilla. The comparison with the unique sequence of Boodleopsis deposited in databases, a partial rbcL sequence of B. pusilla, revealed low molecular divergence with our sequences of B. vaucherioidea. Besides the need to obtain complete seque...

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Morphological and taxonomy of Bostrychia and Stictosiphonia (Rhodomelaceae/Rhodophyta)

Cited by 82 publications

References 0 publications

Monosiphonous growth and cell-death in an unusual Bostrychia (Rhodomelaceae, Rhodophyta): B. anomala sp. nov.

Monosiphonous growth and cell-death in an unusual Bostrychia (Rhodomelaceae, Rhodophyta): B. anomala sp. nov.

Observations on some mangrove-associated algae from the western Pacific (Guam, Chuuk, Kosrae, and Pohnpei)

Diversidade de espécies de macroalgas associadas ao Manguezal da Ilha Barnabé, Baixada Santista, SP, Brasil, com base em \"DNA Barcode\"

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