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º» ¿¬±¸ÆÀ°ú Æ÷Ç×°ø´ë À̱âÅà ±³¼ö´ÔÆÀÀÌ °øµ¿¿¬±¸¸¦ ÇÏ¿© Environmental Microbiology (IF = 5.537)¿¡ Á¦ÃâÇÑ ³í¹®(¾Æ·¡)ÀÌ 2012³â 3¿ù 5ÀÏÀÚ·Î ÃâÆÇµÇ¾ú½À´Ï´Ù.

¿ÍÆí¸ð·ùµé(dinoflagellates)Àº ÇØ¾ç»ý¹°µé Áß¿¡¼­ ±¸¸§ÀÇ ÇÙÀÌ µÇ´Â DMS (Dimethylsulfide)ÀÇ Àü±¸¹°ÁúÀÎ DMSPÀ» °¡Àå ¸¹ÀÌ °¡Áö°í ÀÖ½À´Ï´Ù. ÀÌµé ¿ÍÆí¸ð·ùµéÀº ±¤ÇÕ¼º»Ó¸¸ ¾Æ´Ï¶ó ´Ù¸¥ »ý¹°À» Æ÷½ÄÇϴ ȥÇÕ¿µ¾ç¼º (Mixotrophic) »ý¹°À̱⠶§¹®¿¡, ¿ì¸®´Â ¿ÍÆí¸ð·ùÀÇ DMSPÀÇ »ý»êÀÌ ¸ÔÀÌÁ¾·ùÀÇ ¿µÇâÀ» ¹ÞÀ» °ÍÀ̶ó´Â °¡¼³À» ¼¼¿ü½À´Ï´Ù. ±× ÈÄ º» ¿¬±¸¿¡¼­´Â ÀûÁ¶»ý¹°·Î À¯¸íÇÑ ¿ÍÆí¸ð·ùÀΠKarlodnium veneficum¿¡°Ô DMSP¸¦ ¸¹ÀÌ Æ÷ÇÔÇϰí Àִ ¸ÔÀÌ(Amphidinium carterae)¿Í Àû°Ô Æ÷ÇÔÇÑ ¸ÔÀÌ(Teleaulax sp)¸¦ °¢°¢ °ø±ÞÇÑ ÈÄ, DMSP»ý»êÀ» ÃøÁ¤ÇÏ¿© ¸ÔÀÌÁ¾·ùÀÇ ¿µÇâÀ» ¹Þ´Â´Ù´Â »ç½ÇÀ» ¹àÇû½À´Ï´Ù. º» ³í¹®Àº ¿ÍÆí¸ð·ù, È¥ÇÕ¿µ¾ç, ¸ÔÀÌÁ¾·ù, DMSP»ý»ê°£ÀÇ »ó°ü°ü°è¸¦ ÃÖÃÊ·Î ¹àÈù ³í¹®À̸ç, ¾ÕÀ¸·Î ź¼Ò(C)¼øÈ¯, Ȳ(S)¼øÈ¯, ¿Â³­È­ ¿ÏÈ­ ¿¬±¸¿¡ Å« ±â¿©¸¦ ÇÒ °ÍÀ¸·Î ÆÇ´ÜµË´Ï´Ù. º» ³í¹®ÀÌ ³ª¿À±â±îÁö µµ¿òÀ» ÁֽŠºÐµé²² Áø½ÉÀ¸·Î °¨»çµå¸³´Ï´Ù.

Lee H, Park K, Lee K, Jeong HJ, Yoo YD (2011) Prey-dependentretention of dimethylsulfoniopropionate (DMSP) by mixotrophic dinoflagellates. Environmental Microbiology. 14:605-616

 

Prey-dependent retention of dimethylsulfoniopropionate (DMSP) by mixotrophic dinoflagellates

Hyunwoo Lee, Ki-Tae Park, Kitack Lee, Hae Jin Jeong, Yeong Du Yoo

           We investigated the retention of dimethylsulfoniopropionate (DMSP) in phototrophic dinoflagellates arising from mixotrophy by estimating the cellular content of DMSP in Karlodinium veneficum (mixotrophic growth) fed for 7-10 days on either DMSP-rich Amphidinium carterae (phototrophic growth only) or DMSP-poor Teleaulax sp. (phototrophic growth only). In K. veneficum fed on DMSP-poor prey, the cellular content of DMSP remained almost unchanged regardless of the rate of feeding, whereas the cellular content of DMSP in cells of K. veneficum fed on DMSP-rich prey increased by as much as 21 times the cellular concentration derived exclusively from phototrophic growth. In both cases, significant fractions (10-32% in the former case and 55-65% in the latter) of the total DMSP ingested by K. veneficum were transformed into dimethylsulfide and other biochemical compounds. The results may indicate that the DMSP content of prey species affects temporal variations in the cellular DMSP content of mixotrophic dinoflagellates, and that mixotrophic dinoflagellates produce DMS through grazing on DMSP-rich preys. Additional studies should be performed to examine the universality of our finding in other mixotrophic dinoflagellates feeding on diverse prey species.