tag:blogger.com,1999:blog-8441491750914005356.post1148238136550546384..comments2023-06-16T12:27:49.821+01:00Comments on Microbes Rule the Waves - 2013: Microbial chemoattraction to DMSP: the shaping of planktonic food webs and influencing global climate changeUnknownnoreply@blogger.comBlogger5125tag:blogger.com,1999:blog-8441491750914005356.post-59680098900917037622013-11-23T17:54:11.446+00:002013-11-23T17:54:11.446+00:00As in my reply to Rachel, the authors didn't s...As in my reply to Rachel, the authors didn't state where they collected their samples from. As their is a difference in the swimming ability of coastal and open-ocean isolates it seems quite reasonable to believe that their degree of uptake and availability could be geographically or environmentally dependant too. Equally more phytoplankton (DMSP-producing) in coastal areas could correlate to an increased amount and availability of DMSP, though perhaps the amount of other microbes may also increase in response to this. Anonymoushttps://www.blogger.com/profile/01000763996487715534noreply@blogger.comtag:blogger.com,1999:blog-8441491750914005356.post-20606402659010908702013-11-23T17:47:25.664+00:002013-11-23T17:47:25.664+00:00The authors didn't in fact sequence the genome...The authors didn't in fact sequence the genome of Synechoccus, however chemotaxis towards nitrogen compounds has been observed before in Synechoccus spp. so i believe they do possess the required genes (unless the genes are different for responses to different chemicals?). After reading around, it appears that coastal isolates of Synechoccus are non-motile, only open-ocean isolates have swimming capacity. It is not stated in the paper, but perhaps in this study coastal isolates were used which would explain the lack of chemotaxis.<br />Anonymoushttps://www.blogger.com/profile/01000763996487715534noreply@blogger.comtag:blogger.com,1999:blog-8441491750914005356.post-52623656587735522042013-11-22T21:44:07.334+00:002013-11-22T21:44:07.334+00:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/01000763996487715534noreply@blogger.comtag:blogger.com,1999:blog-8441491750914005356.post-59716244700590330272013-11-22T21:43:58.605+00:002013-11-22T21:43:58.605+00:00Did they mention where they collected their sample...Did they mention where they collected their samples from? I'm just wondering whether the abundance (and dominance), of the different microbial groups differs between different regions of the oceans. For example, there tends to be higher concentration of phytoplankton around coastal areas, but less so in the open ocean...if most of the microbial species in this study showed chemotaxis towards DMSP, could there be a greater degree of uptake from a particular species depending on its environmental conditions, or geographical location?Anonymoushttps://www.blogger.com/profile/01828256514411326878noreply@blogger.comtag:blogger.com,1999:blog-8441491750914005356.post-52992655893924337882013-11-22T14:40:50.594+00:002013-11-22T14:40:50.594+00:00Did the authors sequence the genomes of the bacter...Did the authors sequence the genomes of the bacteria? Is it possible that Synechoccus didn't exhibit any chemotaxis because it lacked the genes to express chemotactic ability?Anonymoushttps://www.blogger.com/profile/05400426162718169047noreply@blogger.com