Charles Santhanaraju Vairappan and Intan Irna Zanil and Takashi Kamada (2014) Structural diversity and geographical distribution of halogenated secondary metabolites in red algae, Laurencia nangii Masuda (Rhodomelaceae, Ceramiales), in the coastal waters of North Borneo Island. Journal of Applied Phycology, 26 (2). pp. 1189-1198.
|
Text
Structural_diversity_and_geographical_distribution_of_halogenated_secondary_metabolites_in_red_algae.pdf Download (129kB) | Preview |
Abstract
The red algae genus Laurencia (Rhodomelaceae, Ceramiales) is known as a prolific producer of halogenated secondary metabolites with a high level of species diversity and geographical distribution. In North Borneo Island, Malaysia, there are four main Laurencia species: Laurencia snackeyi, Laurencia majuscula, Laurencia similis and L. nangii. Although the chemistry of Laurencia is well studied, the diversity of compounds in L. nangii has not been thoroughly investigated. Therefore, we studied the chemical constituents of seven populations of L. nangii from Tunku Abdul Rahman Marine Park (two populations), Dinawan Island (one population), Tun Mustapha Marine Park (two populations) and Tun Sakaran Marine Park (two populations). Halogenated compounds were isolated and the structures determined via spectroscopic methods. A total of 20 metabolites belonging to the classes of sesquiterpenes, acetylenes, bromoallenes, diterpenes and triterpenes were identified. Populations from Tunku Abdul Rahman Marine Park and Dinawan Island contained non-chamigrane-type sesquiterpenes, acetylenes and diterpenes. Populations from Tun Mustapha Marine Park contained chamigrane-type sesquiterpenes, acetylenes and diterpenes. However, the chemical compositions of populations from Tun Sakaran Marine Park were found to differ significantly, containing chamigrane-type and non-chamigrane-type sesquiterpenes, bromoallenes and triterpenes. This investigation has revealed the presence of interesting chemotaxonomical markers in populations of L. nangii and the existence of chemical races in this species.
| Item Type: | Article |
|---|---|
| Keyword: | red algae genus Laurencia (Rhodomelaceae, Ceramiales), North Borneo Island, Laurencia species |
| Subjects: | ?? SH393_Seagrasses ?? |
| Department: | INSTITUTE > Institute for Tropical Biology and Conservation |
| Depositing User: | ADMIN ADMIN |
| Date Deposited: | 30 Oct 2015 12:18 |
| Last Modified: | 12 Oct 2017 12:22 |
| URI: | https://eprints.ums.edu.my/id/eprint/11963 |
Actions (login required)
 |
View Item |