Abstract
Being physically unprotected sessile organisms, marine sponges are thought to protect themselves from surface fouling through the use of antifouling secondary metabolites. In this study, the sponge Axinella sp. was extracted with methanol and then partitioned between organic solvents and water. Two main compounds, hymenialdisine (HD) and debromohymenialdisine (DBH), were isolated from the n-BuOH layer using Sephadex LH-20 and C-18 column chromatography. The antifouling activity of HD and DBH were evaluated using the test of byssus thread production with the green mussel Perna viridis, and the settlement assays with the bryozoan Bugula neritina larvae and the green alga Ulva prolifera spores. Both HD and DBH were found to exhibit significant antifouling activities against P. viridis (EC50 values of 31.77 and 138.18 μg ml−1, respectively), B. neritina (EC50 values of 3.43 and 8.17 μg ml−1, respectively) and U. prolifera (EC50 values of 8.31 and 0.67 μg ml−1, respectively). Our results suggested that HD and DBH may play a role in chemical defense against fouling in Axinella sp.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Biodeterioration & Biodegradation
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
