A propos de quelques travaux récents sur les « grains de fucosane » des Phéophycées

Dangeard, Pierre

doi:10.1080/00378941.1930.10833738

Cited by 5 publications

(4 citation statements)

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“…Crato (1892Crato ( , 1893a was the first to suggest that physodes specifically contained phloroglucinol, a 1,3,5-trihydroxybenzenoid compound or a phloroglucinol derivative. Many early workers generally agreed with this assessment (Kylin 1918(Kylin , 1938Mangenot 1921;Dangeard 1930;Chadefaud 1932Chadefaud , 1934Chadefaud , 1936. The view that physodes contain phloroglucinol is widely accepted today (Glombitza and Sattler 1973;Ragan and Craigie 1976;Gregson and Daly 1982;Ragan and Jamieson 1982;Ragan 1985;Ragan and Glombitza 1986;Li and Glombitza 1991).…”

Section: Histochemistry Of Phenolicsmentioning

confidence: 85%

“…Hunger (1902) described physodes as oscillating in one position, whilst others describe an amoeboid or Brownian movement (Mangenot 1921;Chadefaud 1929). In the past, this physode movement was attributed to their semi-liquid or liquid composition (Crato 1896;Dangeard 1930;Defer 1930;Kylin 1938;Pellegrini 1980). Today, actin is widely considered responsible for vesicle transport (Mollenhauer and Morre 1976;Url et al 1993;Hable and Kropf 1998;Schoenwaelder and Clayton 1999a).…”

Section: Physode Movement Around the Cellmentioning

confidence: 99%

“…Historically, there has been much controversy as to where phenolic compounds are synthesized and packaged within the cell. Many locations have been suggested including, the cell cytoplasm (Crato 1892;Chadefaud 1927;Dangeard 1930;Kylin 1938), cell vacuoles (Mangenot 1922;Berkaloff 1962), chloroplasts (Hansteen 1892(Hansteen , 1900Hansen 1895;Henckel 1902;Hunger 1902;Kylin 1912Kylin , 1918Evans and Holligan 1972;Pellegrini 1980;Kaur and Vijayaraghavan 1992), the chloroplast membrane (Kylin 1918;McCully 1968;Davies et al 1973), chloroplast endoplasmic reticulum (Bouck 1965;Feldmann and Guglielmi 1972;Oliviera and Bisalputra 1973;Ragan 1976), the endoplasmic reticulum (Mangenot 1921;Defer 1930;Feldmann and Guglielmi 1972;Davies et al 1973;Ragan 1976;Schoenwaelder and Clayton 2000), Golgi bodies (McCully 1968;Schoenwaelder and Clayton 2000).…”

Section: Where Are Physodes Produced?mentioning

confidence: 99%

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The Biology of Phenolic Containing Vesicles

Schoenwaelder¹

2008

ALGAE

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Physodes are membrane bound, spherical bodies containing phlorotannins. They stain black with osmium, blue with Toluidine Blue O, red with neutral red, orange with fast red GG and are autofluorescent under violet and UV excitation (Clayton and Ashburner 1994; Schoenwaelder and Clayton 1998a, b; Schoenwaelder 2002a). Small light refracting bodies (probably physodes), were first described many years ago by Nägeli (1847) and Rosanoff (1868) (see Ragan 1976). Since then, many others have described them by many different terms including, brown algal bodies, fucosan granules and tannin bodies. It was Crato (1892) who first used the term physode, to describe the typically round to elliptical, mobile, vesicle-like, strongly light refracting bodies that he observed in cytoplasm of brown algae and other algae (Schoenwaelder 1996; Schoenwaelder 2002a). Brown algal physodes are vesicles containing predominantly phenolic compounds, specifically phloroglucinol and derivatives of phloroglucinol (Ragan and Glombitza 1986). Brown algal polyphenolics, occurring in a single structural class-the phlorotannins, are thought to be synthesized via the acetate-malonate pathway (Targett and Arnold 1998). Their chemical structure has been investigated in many species of brown algae (Glombitza and

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Section: Histochemistry Of Phenolicsmentioning

confidence: 85%

Section: Physode Movement Around the Cellmentioning

confidence: 99%

Section: Where Are Physodes Produced?mentioning

confidence: 99%

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The Biology of Phenolic Containing Vesicles

Schoenwaelder¹

2008

ALGAE

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“…However, it is not found in the tropics nor in Antarctica (Quartino and Boraso de Zaixso 1996). Life‐history studies on Leathesia marina have shown that the alga exhibits a typical heteromorphic life cycle, where a prostrate microscopic gametophyte alternates with a macroscopic sporophyte (Dangeard 1965, 1969, Peters 1987). Under culture conditions, L. marina microthalli have been reported, but neither sexual reproduction nor young macrothalli have been observed (Damman 1930, Kylin 1933).…”

mentioning

confidence: 99%

Cryptic Haploid Stages in the Life Cycle of Leathesia marina (Chordariaceae, Phaeophyceae) Under In Vitro Culture

Poza

Santiañez

Croce

et al. 2020

Journal of Phycology

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We evaluated the life cycle of Leathesia marina through molecular analyses, culture studies, morphological observations, and ploidy measurements. Macroscopic sporophytes were collected from two localities in Atlantic Patagonia and were cultured under long‐day (LD) and short‐day (SD) conditions. Molecular identification of the microscopic and macroscopic phases was performed through the cox3 and rbcL genes and the phylogeny was assessed on the basis of single gene and concatenated datasets. Nuclear ploidy of each phase was estimated from the DNA contents of individual nuclei through epifluorescence microscopy and flow cytometry. Molecular results confirmed the identity of the Argentinian specimens as L. marina and revealed their conspecificity with L. marina from New Zealand, Germany, and Japan. The sporophytic macrothalli (2n) released mitospores from plurilocular sporangia, which developed into globular microthalli (2n), morphologically similar to the sporophytes but not in size, constituting a generation of small diploid thalli, with a mean fluorescent nuclei cross‐sectional area of 3.21 ± 0.7 μm2. The unilocular sporangia released meiospores that developed two morphologically different types of microthalli: erect branched microthalli (n) with a nuclear area of 1.48 ± 0.07 µm2 that reproduces asexually, and prostrate branched microthalli (n) with a nuclear area of 1.24 ± 0.10 µm2 that reproduces sexually. The prostrate microthalli released gametes in LD conditions, which merged and produced macroscopic thalli with a nuclear cross‐sectional area of 3.45 ± 0.09 µm2. Flow cytometry confirmed that the erect and prostrate microthalli were haploid and that the globular microthalli and macrothalli were diploid.

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Le vacuome de la cellule végétale. Morphologie

Dangeard

1956

Le Vacuome De La Cellule Végétale: Morphologie. Le Vacuome Animal. Contractile Vacuoles of Protozoa. Food Vacuoles

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A propos de quelques travaux récents sur les « grains de fucosane » des Phéophycées

Cited by 5 publications

References 1 publication

The Biology of Phenolic Containing Vesicles

The Biology of Phenolic Containing Vesicles

Cryptic Haploid Stages in the Life Cycle of Leathesia marina (Chordariaceae, Phaeophyceae) Under In Vitro Culture

Le vacuome de la cellule végétale. Morphologie

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