The phaeophyte Hizikia fusiformis extracts suppress rhizoid and blade formation in seaweeds

  • Mehader Getachew Department of Biotechnology, Pukyong National University, Namgu, Busan
  • Paulos Getachew Department of Biotechnology, Pukyong National University, Namgu, Busan
  • Ji-Young Cho Department of Life Science and Biotechnology, Soonchunhyang University, Asan
  • Jae-Suk Choi Division of Bioindustry, College of Medical and Life Sciences, Silla University, Sasanggu, Busan
  • Yong-Ki Hong Pukyong National University
Keywords: Allelochemicals, Hizikia fusiformis, monospore, rhizoid, suppression

Abstract

Background: Plants, including marine algae, produce allelochemicals that influence the growth, survival, and reproduction of other organisms.

Questions: To identify natural algicidal or antifouling allelochemicals, we screened 18 common seaweed extracts for suppression of rhizoid and blade production in a convenient Porphyra suborbiculata monospore assay.

Species study and data description: Addition of extract from the most potent phaeophyte, Hizikia fusiformis, suppressed rhizoid formation, rhizoid number, rhizoid length, blade formation, and blade length.

Study site and dates: Seaweed thalli for methanol extraction were collected on the coast of Korea from October 2012 to July 2015.

Methods: Extracts were tested using the P. suborbiculata monospore assay system.

Results: The 50 % suppression doses were 15 µg ml-1 for rhizoid formation, 2.4 µg ml-1 for rhizoid number, 13 µg ml-1 for rhizoid length, 6 µg ml-1 for blade formation, and 11 µg ml-1 for blade length. The H. fusiformis extract also suppressed rhizoid and blade production in leafy green (Ulva pertusa) and brown (Undaria pinnatifida and Ecklonia cava) seaweed spores, as well as suppressing diatom settlement.

Conclusions: The allelochemicals that suppressed or eliminated competing seaweed species may be efficacious for new seaweed control technologies, including the development of antifouling or algicidal agents based on natural products.

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Author Biography

Yong-Ki Hong, Pukyong National University
Professor, Department of Biotechnology
The phaeophyte <em>Hizikia fusiformis</em> extracts suppress rhizoid and blade formation in seaweeds
Published
2017-12-19
How to Cite
Getachew, M., Getachew, P., Cho, J.-Y., Choi, J.-S., & Hong, Y.-K. (2017). The phaeophyte <em>Hizikia fusiformis</em&gt; extracts suppress rhizoid and blade formation in seaweeds. Botanical Sciences, 95(4), 830-838. https://doi.org/10.17129/botsci.700
Section
PHYSIOLOGY / FISIOLOGÍA