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KMID : 0613820130230030341
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Journal of Life Science
2013 Volume.23 No. 3 p.341 ~ p.346
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Biological Characteristics and Tissue Structure of a Crustose Coralline Lithophyllum Alga
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Kang Ji-Young
Benliro Ianthe Marie P.
Lee Ik-Joon
Choi Ji-Young
Joo Jin
Choi Yoo-Seong
Hwang Dong-Soo
Hong Yong-Ki
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Abstract
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The disappearance of seaweed flora in some rocky areas, which is known as algal whitening, barren ground, coralline flats, or deforested areas, is associated with some species of coralline algae. To determine the biological characteristics of a representative species of crustose coralline alga, the 18S rDNA gene was sequenced to identify the genus Lithophyllum. According to its morphological and distributional characteristics, it was deduced to be L. yessoense. Viability was measured using triphenyl tetrazolium chloride and showed high viability from December to February. Culture conditions of 16℃, a 16 hr light, 8 hr dark cycle, and 30 μE/m²/s light intensity were optimal for maintaining the viability of the alga for up to five days. Included in the fatty acids was 9.7% ω-3 eicosapentaenoic acid. An electron microscopy scan of the surface structure revealed round craters about 3.6 ㎛ in diameter, which were covered with rough, irregular, and angular polygon-shaped structures about 1.0 to 3.7 ㎛ in size. Based on the composition and structure found in our study, biomimetic coralline alga might become an environmentally friendly antifouling material against the attachment of soft foulants.
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KEYWORD
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Crustose alga, fatty acid, Lithophyllum, tissue structure, viability
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