The Influence of Phlorotannins and Bromophenols on the Feeding Behavior of Marine Herbivorous Gastropod <i>Turbo cornutus</i>

• 作者: Hideo Miyake Reiji Tanaka Shigeo Kawaguchi Taiko Miyasaki Toshiyuki Shibata
• 来源期刊: 美国植物学期刊(英文)
• 学科: 医学
• 关键词: BROMOPHENOLS Brown Algae Chemical DEFENSES Feeding Deterrent Eisenia bicyclis PHLOROTANNINS Plant-Herbivore Interactions Turban Shell Turbo cornutus
• 年，卷（期）: 2014,（3）
• 页码范围: 387-392
• 页数: 6页
• 分类号: R73

摘要

The influence of phlorotannins and bromophenols on the feeding behavior of marine herbivores was determined using bioassay of Turbo cornutus. It was found that phloroglucinol and its oligomers isolated from the brown alga Eisenia bicyclis (eckol, fucofuroeckol A, phlorofucofuroeckol A, dieckol, and 8,8’-bieckol) had a deterrent effect against feeding behavior of T. cornutus in the concentration of algal body, respectively. In the case of the examination of 0.1 mM concentration, although fucofuroeckol A and phlorofucofuroeckol A significantly reduced feeding by T. cornutus, phloroglucinol and 8,8’-bieckol did not show any significant influence on feeding behavior, and eckol and dieckol had stimulating activity. 2,4-Dibromophenol and 2,4,6-tribromophenol, which are major components of extracellular secretions from Eisenia and Ecklonia species, caused the death, the torpidity, and the decreased appetite of T. cornutus at the concentration of 0.1 mM. In addition, 2,4-dibromophenol had strong feeding deterrent activity at the concentration of 1 μM. These results indicate that phlorotannins and bromophenols act as chemical defense agents of brown algae against environmental stresses such as the herbivore attack.