Regeneration and Maturation Induction of Free-Living Gametophytes of Undariopsis peterseniana for their Mass Production

Hwang, Eunkyoung; Shim, Cheol Hong; Ha, Dong Soo; Gong, Yong Gun; Park, Chan Sun

doi:10.5657/kfas.2011.44.2.155

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…1a, c. Male and female gametophyte clones were maintained in vegetative state under low-irradiance white fluorescent light (4-5.3 μmol photons m −2 s −1 in Westermeier et al 2006; 5 μmol photons m −2 s −1 in this study) and propagated by periodic fragmentation as described by Westermeier et al (2006). Optimal culture conditions to control regeneration and maturation of male and female gametophyte in U. peterseniana were reported by Hwang et al (2011b). The gametophyte clones were cultivated in aerated flasks of seawater supplemented with PESI medium at 10-15°C and under 20-40 μmol photons m −2 s −1 (Hwang et al 2011b).…”

Section: Methodsmentioning

confidence: 99%

“…Optimal culture conditions to control regeneration and maturation of male and female gametophyte in U. peterseniana were reported by Hwang et al (2011b). The gametophyte clones were cultivated in aerated flasks of seawater supplemented with PESI medium at 10-15°C and under 20-40 μmol photons m −2 s −1 (Hwang et al 2011b). The filamentous gametophytes grew gradually into ball-like shapes.…”

Section: Methodsmentioning

confidence: 99%

“…Male and female gametophyte clones were seperated by method of Hwang et al (2011b). The gametophyte clones were homogenized and cultured separately in 3 L culture flasks under 10:14 h (L/D) for about 10 days (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Cultivation of a hybrid of free-living gametophytes between Undariopsis peterseniana and Undaria pinnatifida: morphological aspects and cultivation period

2011

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The kelp Undariopsis peterseniana is warmwater-tolerant, and consequently, there is currently considerable interest in developing commercial cultivation techniques for this species in Korea. U. peterseniana plants have been successfully transferred to the northern coast of Korea beyond their original habitat in Jeju Island (33°30′08.65″N, 126°55′39.02″E). In this study, we cultured a hybrid kelp consisting of a cross between free-living gametophytes of U. peterseniana and U. pinnatifida in an attempt to extend the culture period of Undaria which is an important species for both the abalone industry and for commercial seaweed mariculture for human food applications. Morphological characters and cultivation period were compared between the parent thalli and the hybrid. The cultivation experiment was conducted in Wando, on the southern coast of Korea (34°26′18.68″N, 127°05′ 43.88″E). The morphological characteristics of the hybrid thalli were intermediate between the two species having shallow pinnated blades and a reduced reproductive organ. Hybrid thalli showed faster growth rates, 1.5 times greater biomass, and a longer cultivation period than the parent thalli. The hybrid strain possessed characteristics that indicate it could be used as an alternative kelp source to supply the abalone feed industry.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Cultivation of a hybrid of free-living gametophytes between Undariopsis peterseniana and Undaria pinnatifida: morphological aspects and cultivation period

2011

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“…(Yokohama et al, 1987;Serisawa et al, 2001), (Altamirano et al, 2003(Altamirano et al, , 2004. (Bolton and Levitt, 1985;Morita et al, 2003;Wi et al, 2008;Hwang et al, 2010aHwang et al, , 2011Komazawa et al, 2014). , , (Wi et al, 2008;Hwang et al, 2010bHwang et al, , 2013a.…”

Section: 서 론 (Ecklonia Cava)mentioning

confidence: 99%

Effects of Temperature and Light Intensity on the Gametophyte Fragment Growth of Ecklonia cava Kjellman (Laminariales, Phaeophyta)

Kang¹,

Chung²

2015

Korean Journal of Fisheries and Aquatic Sciences

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We examined the effects of temperature and light intensity on gametophyte growth of Ecklonia cava Kjellman. The growth of female and male gametophytes was investigated before maturation. Gametophytes prepared from Munseom, Jeju, Korea in October 2014 were separated by sex and maintained under the following conditions: 15°C, 20 µmol•m -2 •s -1 , and a 12-h/12-h light/dark cycle. The experiments were conducted at five temperatures (10, 15, 20, 25, and 30°C) and three light intensities (5, 20, and 40 µmol•m -2 •s -1 ). Daily growth rates were estimated by the increase in filamentous frond area. The optimal growth conditions for female gametophytes were 20°C and 40 µmol•m -2 •s -1 ; the optimal conditions for male gametophytes were 15°C and 20 µmol•m -2 •s -1 . The relative growth rates (RGR) of female and male gametophytes decreased at 25°C and 30°C, respectively. At 30°C, RGRs of gametophytes decreased by approximately 1.0% day -1 . In addition, RGRs of male gametophytes were higher than those of female gametophytes. These results indicate that female gametophytes were more sensitive to temperature and light intensity than male gametophytes. Moreover, these results suggest that E. cava growth rates could decrease as a result of global warming.

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“…넓미역(Undariopsis peterseniana)은 미역과의 해조류로 우리나라에는 주로 제주도 종달리, 우도, 가파도 및 청산 도와 같이, 쓰시마 난류의 영향을 직접적으로 받는 지역의 수심 15 m 조하대 부근에 서식하는 것으로 알려져 있다 (Lee and Koh 1991;Kang 1996;Lee 1998;Hwang et al 2010a). 지금까지 수행된 넓미역에 관 한 연구는 대량생산을 위한 유리배우체의 재생 및 성숙 유도, 보호대상 해조류로서 생장 및 성숙 과정을 관찰한 생태학적 특성 연구 등 주로 넓미역의 증양식 측면에서의 연구가 수행되었을 뿐 (Hwang et al 2010b;Hwang et al 2011), 기능성 소재로써 넓미역의 이용 가치에 관한 체계 적인 연구는 거의 수행되지 않았다. 따라서, 본 연구는 국 내 자생 넓미역을 식품, 화장품 및 의약품 분야의 기능성 소재로 이용하고자 하였으며, 이를 위해 넓미역의 영양 성 분 분석을 수행하였고, 에탄올(EtOH)과 열수로 추출한 추 출물의 폴리페놀 함량 및 항산화 활성을 연구하였다.…”

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The Nutritional Composition and Antioxidant Activity from Undariopsis peterseniana

Cho

Yoon²,

Kim³

2013

Ocean and Polar Research

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The proximate composition, free amino acid composition and mineral contents from Undariopsis peterseniana were determined, and the antioxidant activities of ethanol (EtOH) and hot water extracts of U. peterseniana were investigated using DPPH (1,1-diphenyl-1-picrylhydrazyl), ABTS (2,2'azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)) radical scavenging effects and reducing power. The contents of moisture, ash, protein, lipid and carbohydrate were 12.5%, 23.1%, 9.7%, 0.2% and 54.5%, respectively, and alginic acid content was 12.3%. The major free amino acid contents were alanine, phenylalanine, aminoethanol, valine, glutamic acid and phosphoserine. Ca (1589.1 mg) was the largest mineral followed by Na (344.6 mg), Mg (74.3 mg), Zn (10.2 mg) and Fe (1.5 mg). The total phenolic contents of EtOH and hot water extracts were exhibited at 15.7 and 4.3 mg GAE/g sample, respectively. The antioxidant activity of EtOH extract exhibited strong ABTS and DPPH radical scavenging activities with reducing power, and hot water extract also demonstrated strong ABTS radical scavenging effects. Therefore, the results of this study suggest that U. peterseniana contained an abundance of naturally occurring nutrients (free amino acids and minerals), and the strong antioxidant activities of EtOH and hot water extracts from U. peterseniana could be good sources of natural antioxidants for healthcare products.

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Regeneration and Maturation Induction of Free-Living Gametophytes of Undariopsis peterseniana for their Mass Production

Cited by 7 publications

References 6 publications

Cultivation of a hybrid of free-living gametophytes between Undariopsis peterseniana and Undaria pinnatifida: morphological aspects and cultivation period

Cultivation of a hybrid of free-living gametophytes between Undariopsis peterseniana and Undaria pinnatifida: morphological aspects and cultivation period

Effects of Temperature and Light Intensity on the Gametophyte Fragment Growth of Ecklonia cava Kjellman (Laminariales, Phaeophyta)

The Nutritional Composition and Antioxidant Activity from Undariopsis peterseniana

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