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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal DOI :
The Korean Society of Phycology
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Volume & Issues
Volume 25, Issue 4 - Dec 2010
Volume 25, Issue 3 - Sep 2010
Volume 25, Issue 2 - Jun 2010
Volume 25, Issue 1 - Mar 2010
Selecting the target year
Antioxidants from macroalgae: potential applications in human health and nutrition
Cornish, M. Lynn ; Garbary, David J. ;
ALGAE, volume 25, issue 4, 2010, Pages 155~171
DOI : 10.4490/algae.2010.25.4.155
The underlying physiology of algal antioxidant compounds is reviewed in the context of seaweed biology and utilization. The application of seaweed antioxidants in foods, food supplements, nutraceuticals and medicine is considered from the perspective of benefits to human health. We advocate that direct consumption of seaweed products for their antioxidant composition alone provides a useful alternative to non-natural substances, while simultaneously providing worthwhile nutritional benefits. Economic utilization of seaweeds for their antioxidant properties remains in its infancy. This review provides examples ranging from laboratory studies through to clinical trials where antioxidants derived from seaweeds may provide major health benefits that warrant subsequent investigative studies and possible utilization.
Morphology and distribution of some marine diatoms, Family Rhizosoleniaceae, in Korean coastal waters: a genus Rhizosolenia 1
Yun, Suk-Min ; Lee, Jin-Hwan ;
ALGAE, volume 25, issue 4, 2010, Pages 173~182
DOI : 10.4490/algae.2010.25.4.173
Four Rhizosolenia species of marine diatom were appeared at 30 sites in Korean coastal waters from September 2008 to February 2010. The cell shape, diameter, length of pervalvar axis, external process, segment and areolation characters of the species were examined. All four species were cylindrically shaped, but the external processes differed. Segment striations were regularly straight, and velum showed hexagonal, circular pore and narrow slit. Rhizosolenia formosa and R. hyalina were only occurred in September 2008 from the Yellow Sea, R. bergonii was appeared throughout the year from Korea Strait and Yangyang coasts, and R. setigera was abundantly showed in all seasons from all site. R. formosa is a newly recorded species in Korean coastal waters.
Costulariella, a new substitute name for Costularia Ju. Petrov et I. Gussarova (Laminariales, Phaeophyceae)
Klochkova, Nina G. ; Klochkova, Tatyana A. ;
ALGAE, volume 25, issue 4, 2010, Pages 183~185
DOI : 10.4490/algae.2010.25.4.183
Costularia Ju. Petrov et I. Gussarova, published in 1970, is a preoccupied name by Clarke, 1898 for a genus of monocotyledonous flowering plants in the family Cyperaceae (Magnoliophyta) and thus illegitimate. Costulariella nom. nov. is proposed as a replacement. The distribution and morphology of this little-known species are discussed.
Rosenvingea orientalis (Scytosiphonaceae, Phaeophyceae) from Chiapas, Mexico: life history in culture and molecular phylogeny
West, John A. ; Zuccarello, Giuseppe C. ; Pedroche, Francisco F. ; De Goer, Susan Loiseaux ;
ALGAE, volume 25, issue 4, 2010, Pages 187~195
DOI : 10.4490/algae.2010.25.4.187
The genus Rosenvingea is well known in the tropics. Four species have been reported from Pacific Mexico: R. floridana, R. antillarum, R. intricata and R. sanctae-crucis. We collected a plant (Boca del Cielo, Chiapas) that we identified as Rosenvingea orientalis, a species not previously reported from Pacific Mexico. We were able to characterize the life cycle of this species for the first time in laboratory culture. It reproduced exclusively by plurilocular sporangia (plurangia). The mature plants were up to 6 cm long with cylindrical to compressed fronds (to 2 mm wide) with dichotomous branches in the upper half of the thallus. The medulla was hollow with 2-3 layers of large inflated colourless cells at the periphery. The cortex was comprised of 1 layer of small cells, each with a single chloroplast and pyrenoid. Linear plurangial sori with phaeophycean hairs formed along the mature fronds. Zoospore germlings developed into prostrate filamentous systems, each with a single phaeophycean hair that gave rise to a single erect shoot with multiple hairs arising near the tip. Molecular phylogeny using the psaA gene placed this isolate within the Scytosiphonaceae. It does not confirm the exact identification of R. orientalis, although its placement close to other Rosenvingea sequences was confirmed and morphological evidence supports its placement in R. orientalis. Our culture investigations indicated that it has an asexual life cycle. Further collections are needed to resolve the full generic and specific relationships of Rosenvingea and related taxa, and their reproductive patterns.
Cytoskeletal changes during nuclear and cell division in the freshwater alga Zygnema cruciatum (Chlorophyta, Zygnematales)
Yoon, Min-Chul ; Han, Jong-Won ; Hwang, Mi-Sook ; Kim, Gwang-Hoon ;
ALGAE, volume 25, issue 4, 2010, Pages 197~204
DOI : 10.4490/algae.2010.25.4.197
Cytoskeletal changes were observed during cell division of the green alga Zygnema cruciatum using flourescein isothiocynate (FITC)-conjugated phallacidin for F-actin staining and FITC-anti-
-tubulin for microtubule staining. Z. cruciatum was uninucleate with two star-shaped chloroplasts. Nuclear division and cell plate formation occurred prior to chloroplast division. Actin filaments appeared on the chromosome and nuclear surface during prophase, and the F-actin ring appeared as the cleavage furrow developed. FITC-phallacidin revealed that actin filaments were attached to the chromosomes during metaphase. The F-actin ring disappeared at late metaphase. At telophase, FITC-phallacidin staining of actin filaments disappeared. FITC-anti-
-tubulin staining revealed that microtubules were arranged beneath the protoplasm during interphase and then localized on the nuclear region at prophase, and that the mitotic spindle was formed during metaphase. The microtubules appeared between dividing chloroplasts. The results indicate that a coordination of actin filaments and microtubules might be necessary for nuclear division and chromosome movement in Z. cruciatum.
Invasion potential of Kappaphycus alvarezii on corals at Kurusadai Island, Gulf of Mannar, India
Mandal, Subir Kumar ; Mantri, Vaibhav A. ; Haldar, Soumya ; Eswaran, Karuppanan ; Ganesan, Meenakshisundaram ;
ALGAE, volume 25, issue 4, 2010, Pages 205~216
DOI : 10.4490/algae.2010.25.4.205
The marine red alga Kappaphycus alvarezii is a major source of
-carrageenan. It has been introduced in 20 countries including India. Recently, several reports have expressed concerns about Kappaphycus invasion on Acropora corals at Kurusadai Island in the Gulf of Mannar, India, which is part of a marine bioreserve. To understand the extent of the Kappaphycus invasion, 27 randomly selected locations around Kurusadai Island and the mainland coast were surveyed during May-August 2008 and July 2009. Our rigorous sampling revealed that K. alvarezii was confined to two different patches of 105 m
55 m and 8 m
9 m located at the southeastern part of Kurusadai Island. The actual extent of the K. alvarezii canopy coverage was 76.7
, accounting for less than 0.0035% of the total coral reef area. The daily growth rate of the K. alvarezii at Kurusadai was 0.7%. K. alvarezii was not observed in the coral reef area of the adjoining Pullivasal and Poomarichan Islands or the Palk Bay area cultivation sites. The lack of functional reproductive cycle, low spore viability, and the absence of microscopic phases in the life cycle of this alga coupled with the abundance presence of herbivores may restrict the further spread of this alga, so its invasive potential at Kurusadai Island is considered remote.
Feeding specificity and photosynthetic activity of Korean sacoglossan mollusks
Klochkova, Tatyana A. ; Han, Jong-Won ; Kim, Ju-Hyoung ; Kim, Kwang-Young ; Kim, Gwang-Hoon ;
ALGAE, volume 25, issue 4, 2010, Pages 217~227
DOI : 10.4490/algae.2010.25.4.217
During feeding on algal cytoplasm, some sacoglossans are known to keep the chloroplasts photosynthetically active for days to months in their digestive cells. Korean sacoglossan mollusks containing functional chloroplasts were screened using an in vivo chlorophyll fluorescence measuring system (pulse amplitude modulation, PAM). We collected six sacoglossans feeding on siphonous and siphonocladous green algae (Elysia atroviridis, E. nigrocapitata, E. ornata, Ercolania boodleae, Placida dendritica, Stiliger sp.) and one feeding on ceramiaceaen algae (Stiliger berghi) and performed feeding experiments using 37 algal species. Three species of Elysia showed strong photosynthetic activity for months. However, P. dendritica maintained functional chloroplasts only for several hours after feeding. E. boodleae, S. berghi, and Stiliger sp. showed no photosynthetic activity in any circumstances. Among all species, E. nigrocapitata was capable to tolerate the longest period of starvation for over 4 months. Four `solar powered` sacoglossans bonded avidly to their specific algal food. Each species attached to and consumed only one algal species when several algae were given together. While they occasionally consumed other algae after prolonged starvation, they always reverted to their specific algae when available.