Chemical Defense of Soft Coral Sinularia polydactyla from the Red Sea Against Marine Biofilm-Forming Bacteria

作     者：ESKandER Rehab AL-SOFYANI Abdulmohsin A. EL-SHERBINY Mohsen M.O. BA-AKDAH Mohammad Abdulaziz SATHEESH Sathianeson 

作者机构：Department of Marine Biology Faculty of Marine Sciences King Abdulaziz University 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2018年第17卷第6期

页      面：1451-1457页

核心收录：

学科分类：07[理学] 

基　　金：King Abdulaziz City for Science and Technology (KACST) for providing financial assistance to this study (No. PS-37-988) 

主　　题：chemical ecology antifouling antibiofilm activity bioactive compound coral tissue damage 

摘      要：Soft corals are an important group of organisms that live in reef ecosystems. In this study, the chemical defense of soft coral Sinularia polydactyla against biofilm-forming bacteria was assessed. The soft coral S. polydactyla was collected from the Obhur creek of the Red Sea and the bioactive compounds were extracted under different conditions using methanol and hexane as solvents. Results revealed that the bioactive compounds produced by the soft coral S. polydactyla were active against the growth, hydrophobicity and extracellular polymeric substances production of the biofilm-forming bacteria. However, the damage or injury in soft coral tissue caused a decrease in the activity against biofilm-forming bacteria. GC-MS analysis revealed that sesquiterpenes were abundant in normal coral sample extract while cembranoids were abundant in damaged coral sample extracts. In general, the results indicated that the soft corals either under stress or with damage may not have a strong chemical defense against the colonizing marine organisms and competitors.