Some neutral constituents of the Rhodophyceae with special reference to the occurrence of the floridosides

McLachlan, J.; Tocher, R. D.

doi:10.1139/b68-088

Cited by 46 publications

(18 citation statements)

References 9 publications

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“…Ia). Craigie et al (1968) carried out I4C photofixation studies on selected red algae, showing that D/L isofloridosides are more weakly 14C-labelled than floridoside. They concluded that floridoside was the primary photoassimilatory product, while D/L isofloridosides are formed from floridoside by a slow isomerisation process.…”

Section: Discussionmentioning

confidence: 99%

“…involving D and L forlns of glycerol) and that the two isofloridosides and floridoside may have different physiological roles within this alga, since L-isofloridoside appears to be involved in osmotic adjustment. It would be interesting to investigate the dynamics of mannitol and altritoi I3C tracer exchange in plants of H. elongala maintained in darkness, since similar radiocarbon experiments in red algae suggest that tracer may be transferred very slowly from floridoside to D/L isofloridosides under such conditions (Craigie et al, 1968), confirming that these heterosides are not physiologically and metabolically equivalent, despite their similar structure.…”

Section: Discussionmentioning

confidence: 99%

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Turnover of hexitols in the marine macroalgaHimanthalia elongata(Phaeophyta, Fucales)

Reed

Wright

Chudek

et al. 1995

European Journal of Phycology

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'3C nuclear magnetic resonance spectroscopy (NMR) has been used to study the metabolic flux of carbon through the intracellular pools of the isomeric hexitols D-altritol and D-mannitol in Himanthalia elongata. Natural abundance ~3C NMR spectra of freshly collected plant material showed altritol as the dominant intracellular low-molecular-weight organic solute, with mannitol present at less than 20% of the altritol concentration. Plant material incubated in seawater medium with added *3C-enriched bicarbonate showed a rapid increase in the 13C signal due to mannitol, with an increase of more than 12-fold in under 48 h, in contrast to the altritol signal, which increased by approximately 2-fold over the same period. The intracellular mannitol signal decreased rapidly when *3C-enriched plant material was transferred to a non-enriched medium, while altritol showed a slower decline. These results are consistent with previous observations on the effects of salinity on the intracellular hexitol pools of H. elongata, suggesting that mannitol is more rapidly metabolised than altritol. Estimates of the half-time for tracer exchange support this view, with a half-time for the turnover of altritol ( > 400 h) which is an order of magnitude greater than that for mannitol turnover (~ 50 h).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Turnover of hexitols in the marine macroalgaHimanthalia elongata(Phaeophyta, Fucales)

Reed

Wright

Chudek

et al. 1995

European Journal of Phycology

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“…Craigie and McLachlan (1964) showed that glycerol accumulated in the marine green alga Dunaliella tertiolecta photosynthesizing under salinity stress. Photosynthetic products reported included a suite of galactosyl glycerols in red algae (Majak et al 1966;Craigie et al 1968), unusual cyclitols in red algae and chrysophytes (Ramanathan et al 1966;Craigie 1969Craigie , 1974Laycock and Craigie 1970;Craigie et al 1971) and mannitol in prasinophycean and chrysophycean algae . The effects of carboxylic acids on growth and photosynthesis of Haematococcus pluvialis was reported by McLachlan and Craigie (1965) as was photosynthesis in algae containing chlorophyll b (McLachlan and Craigie 1967).…”

Section: Ralph Lewinmentioning

confidence: 99%

Photosynthesis Research in Canada from 1945 to the early 1970s

Gorham

Nozzolillo

2006

Photosynth Res

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This history traces the development of photosynthesis research in Canada from 1945 to 1975, starting with the work of Gleb(1) Krotkov and his students, Paul Vittorio, Tony(1) Bidwell, Don(1) Nelson, Jim(1) Craigie, Bruce Tregunna, Andreas Hauschild, Geoff Lister and others in the Department of Biology at Queen's University, Kingston, Ontario. They focused on the influence of taxonomy and light quality on the path of carbon into early products, photorespiration and photosynthesis in young trees. During the same period, Ken(1) Clendenning and one of the authors (PRG) at the National Research Council of Canada (NRCC) laboratory in Ottawa began studies of chloroplast photoreduction and leaf carboxylases. They were joined by Don(1) Mortimer, who showed that the path of carbon varies with species of plant and by Morris Kates, who studied phospholipid enzymology in chloroplasts and leaves. Stan(1) Holt researched the chemistry and distribution of chlorophylls in different taxa. In 1952, Ralph Lewin joined NRCC's new Atlantic Regional Laboratory in Halifax, Nova Scotia, followed by Jim Craigie, Jack McLachlan and Tony Bidwell who mainly investigated the products of photosynthesis in marine algae. Tony Bidwell continued these studies in 1959 at the Department of Botany, University of Toronto. Dave(1) Canvin joined the staff at Queen's in 1965 and became involved in solving the mystery of photorespiration. Tony Bidwell returned to Queen's in 1969 and studied photosynthesis of algal chloroplasts using an 'artificial leaf.' In 1965, Don Nelson established a group at Simon Fraser University in Burnaby, British Columbia that included his former student, Geoff Lister who produced the first photosynthetic action spectra for trees, and Bill(1) Vidaver, who showed the useful relation between chlorophyll fluorescence and photosynthetic activity. In 1970, Mário Fragata headed a group at the Université du Québec à Trois Rivières, Québec, that began with studies of Photosystem II in chloroplasts and particles.

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“…A novel c-mannoside derivative of floridoside was isolated from this alga by Lindberg (1954), notwithstanding Ross's (1953) claim that mannose is absent. Small quantities of isofloridoside were reported by Craigie et al (1968).…”

Section: Low-molecular-weight Carbohydratesmentioning

confidence: 99%

Biology of Furcellaria lumbricalis (Hudson) Lamouroux (Rhodophyta: Gigartinales), a commercial carrageenophyte

1991

Self Cite

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Information on the commercially utilized marine red alga Furcellaria lumbricalis is summarized from published sources. Biological aspects under discussion include: nomenclature, taxonomy, morphology, development and life history, distribution, phenology, ecophysiology, growth and resource management. A brief history of the utilization of this species, and an account of its chemical constituents including the hydrocolloid furcellaran are also presented.

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Some neutral constituents of the Rhodophyceae with special reference to the occurrence of the floridosides

Cited by 46 publications

References 9 publications

Turnover of hexitols in the marine macroalgaHimanthalia elongata(Phaeophyta, Fucales)

Turnover of hexitols in the marine macroalgaHimanthalia elongata(Phaeophyta, Fucales)

Photosynthesis Research in Canada from 1945 to the early 1970s

Biology of Furcellaria lumbricalis (Hudson) Lamouroux (Rhodophyta: Gigartinales), a commercial carrageenophyte

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