[논문]Relationship between Phycoerythrin and Nitrogen Content in Gloiopeltis furcata and Porphyra yezoensis

Hiroyuki Mizuta

doi:10.4490/algae.2002.17.2.089

Relationship between Phycoerythrin and Nitrogen Content in Gloiopeltis furcata and Porphyra yezoensis 원문보기

Algae, v.17 no.2, 2002년, pp.89 - 93

Hiroyuki Mizuta (Laboratory of Breeding Science, Graduate School of Fisheries Sciences, Hokkaido University)

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Seasonal changes of pigment compositionin two intertidal red algae, Gloiopeltis furcata (Postels et Ruprecht) J. Agardh, and Porphyra yezoensis Ueda, were investigated. Chlorophyll α and phycoerythrin levels were high during winter, but decreased in late spring or summer, with accompanying discoloration from deep red to green or yellow. This discoloation corresponded closely to the fluctuationof phycoerythrin content. Nevertheless, photosynthesis capacity was maintained by the increasing water temperature in the field, suggesting that large amounts of phycoerythrin are not necessary for photosynthesis. Phycoerythrin conten correlated significantly with nitrogen content in both species when the nitrogen level was greater than the level of critical content (1.30% DW in G. furcata, and 2.26% DW in P. yezoensis), indicating that phycoerythrin plays a more important role in the nitrogen status as a nitrogen pool than that of nitrogen critical content. Furthermore, the dependence level of the alage on phycoerythrin as a nitrogen pool was greater in P. yezoensis than in G. furcata because of the remarkable increase of phycoerythrin content in P. yezoensis with increasing jnitrogen content.

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(1984). After removing the epiphytes, the plants were measured for fresh weight and surface area, and were then traced onto tracing paper to measure the surface area with a digital planimeter (KP-92N, Uchida Yoko Co.z Ltd., Tokyo, Japan). The surface 효!ea of G.
This study aims first to clarify the 잉easonal changes of pigment composition in two intertidal red algae, Gloiopeltis furcata and Porphyra yezoensis, and second, to determine the relationship between pigment content and nitrogen content.

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Two red algae, Gloiopeltis furcata and Porphyra yezoensis, were collected once or twice a month at 호 fixed site in the intertidal zone at Usujiri, southern Hokkaido, Japan, in the period from December 1997 to August 1998. Seawater was collected from the same site in the p욘!iod from November 1997 to October 1998 and filtered with a Whatman GF/C glass fiber filter (Whatman International Ltd.

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Relationship between Phycoerythrin and Nitrogen Content in Gloiopeltis furcata and Porphyra yezoensis 원문보기

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Relationship between Phycoerythrin and Nitrogen Content in Gloiopeltis furcata and Porphyra yezoensis 원문보기

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