Document Details

Document Type : Thesis 
Document Title :
CHEMICAL DEFENSE SUBSTANCES PRODUCES BY SECONDARY METABOLITES IN TWO SPECIES OF FAMILY ALCYONIDAE “
"المواد الكيميائية الدفاعية بواسطة العمليات اليضيةالثنائية لنوعين من اللسيونيدى فى البحر الحمر"
 
Subject : Faculty of Marine Sciences 
Document Language : Arabic 
Abstract : Soft corals are important group of organisms that living in reef ecosystems. These organisms don’t have calcium carbonate exoskeleton as like hard corals. Hence, soft corals are producing secondary metabolites mainly for defence against predators and pathogens. In this study, the chemical defence of soft coral Sarcophyton sp. and Sinularia sp. was studied against biofilm-forming bacteria. The soft coral Sarcophyton sp. and Sinularia sp. were collected from Obhur creek and extracted under different conditions using methanol and hexane. Mechanical damage and local wounding were done to the soft corals to know whether damage to corals affect the chemical defense. Also chemical defense was induced using predator and bacterial strain. The chemical defense was assessed against biofilm-forming bacterial strain isolated from hard surface. Results revealed that the bioactive compounds produced by Sarcophyton sp. and Sinularia sp. were active against the growth of biofilm bacteria. The extracts affected the growth and hydrophobicity of biofilm bacteria. However, damage or injury to soft coral tissue showed decrease in activity against the biofilm bacteria. In general, Results indicate that corals which are under stress or damage may not have strong chemical defence against the predators. The findings of this study may offer potential molecules for pharmacological applications and biomedical applications. 
Supervisor : Prof. Abdulmohsin Abdullah M. Al-Sofyani 
Thesis Type : Master Thesis 
Publishing Year : 1439 AH
2017 AD 
Added Date : Monday, December 25, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
رحاب حسن إسكندرESKANDER, REHAB HASSANResearcherMaster 

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