Isolation of algal spore lytic C17 fatty acid from the crustose coralline seaweed Lithophyllum yessoense

摘要

The algal spore lytic fatty acid of heptadeca-5,8,11-trien (HpDTE: C17:3) was isolated from the crustose coralline seaweed Lithophyllum yessoense. HpDTE, an odd-numbered carbon fatty acid, showed more than 50% lysis at a concentration of 5 og.mLp# against the spores of three chlorophyte species, nine rhodophytes, four phaeophytes, and the cells of four phytoplankton species. Lysis activity increased with the number of double bonds and carbon atoms in the fatty acid increased. HpDTE showed a ten-fold stronger activity with a LC of 3.1 og.mLp# than l-linolenic acid (C18:3).