Study of compounds that influence facultative symbiosis between coral and seagrass

在这项研究中，我们研究了影响珊瑚Montipora digitata和海草Thalassa hemprichii之间兼性共生的化合物，这些化合物可以在冲绳岛西海岸的Bise附近看到。以Acropora sp.1为对照。我们评估了海草麻氏体粗提物对珊瑚幼虫的影响。海草hemprichii是在冲绳县直接收获的。对该原料的有机粗提物进行生物测定指导（对珊瑚幼虫的毒性），溶剂分割，ODS-HPLC分离，得到咖啡酸。0.0018 mg/ml ~ 0.18 mg/ml咖啡酸对鹿角孢虫（Acropora sp.1）的卵泡形态产生影响。另一方面，在相同的浓度下，对毛囊的形态没有影响。

In this study, we examined compounds that influence facultative symbiosis between coral Montipora digitata and seagrass Thalassa hemprichii, which can be seen near Bise on the west coast of Okinawa Island. Acropora sp.1 was used as a control. We evaluated the influence of a crude extract of seagrass T. hemprichii against coral larvae. The seagrass T. hemprichii was directly harvested in Okinawa Prefecture. A crude organic extract of this material was subjected to bioassay-guided (toxicity against coral larvae) fractionation by solvent partition, ODS-HPLC, to yield caffeic acid. Morphological changes of lavae of Acropora sp.1 were induced by exposure to 0.0018 mg/ml-0.18 mg/ml caffeic acid. On the other hand, no morphological changes of lavae of M. digitata were induced at same concentration.