tag:blogger.com,1999:blog-10781944.post8820874963369494750..comments2024-03-28T00:36:36.460-07:00Comments on The Tree of Life: Deep subseafloor microbiology talk at #UCDavis raises questions about the definition of lifeJonathan Eisenhttp://www.blogger.com/profile/07953790938128734305noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-10781944.post-64182452252937347572009-07-15T13:20:10.741-07:002009-07-15T13:20:10.741-07:00Sounds quite interesting. Detecting the signatures...Sounds quite interesting. Detecting the signatures may be harder with amplification-sequencing, as strongest signature is closer to broken ends of a DNA fragment.<br /><br />Still - may shed some light on whether these are dead, or just waiting.The Other Jimhttps://www.blogger.com/profile/17570666738076378921noreply@blogger.comtag:blogger.com,1999:blog-10781944.post-74281552224346925122009-07-15T07:49:01.756-07:002009-07-15T07:49:01.756-07:00Excellent question The Other Jim. That was in fact...Excellent question The Other Jim. That was in fact the same question I asked him in his after dinner talk and that is how we ended the whole dinner. He said he did not know and asked if I would think about looking into that ...Jonathan Eisenhttps://www.blogger.com/profile/07953790938128734305noreply@blogger.comtag:blogger.com,1999:blog-10781944.post-31930309489188764812009-07-15T04:02:54.285-07:002009-07-15T04:02:54.285-07:00Is there any evidence that the DNA is damaged in t...Is there any evidence that the DNA is damaged in these organism? dC to dU changes, etc (as per the Neandertal DNA fragment sequence signatures)?The Other Jimhttps://www.blogger.com/profile/17570666738076378921noreply@blogger.comtag:blogger.com,1999:blog-10781944.post-63709950407286016132009-07-14T16:44:55.926-07:002009-07-14T16:44:55.926-07:00Thank you! I'll pubmed, then...Thank you! I'll pubmed, then...Bastien Boussauhttps://www.blogger.com/profile/12246598165006568055noreply@blogger.comtag:blogger.com,1999:blog-10781944.post-42694841996295702142009-07-14T16:23:57.686-07:002009-07-14T16:23:57.686-07:00Bastien - Dont have refs ...
Morgan --- unclear ...Bastien - Dont have refs ... <br /><br />Morgan --- unclear if it is a graveyard or not --- worth studying still before deciding<br /><br />If it is a graveyard it very well could be a window into past<br /><br />They may be good at staying dormant or they may just work slowly --- not sure what to call dormant, dead or slow<br /><br />Regardless - another kjey question is - are they able to get activated?<br /><br />Also - can their DNA serve as a genetic reservoir?Jonathan Eisenhttps://www.blogger.com/profile/07953790938128734305noreply@blogger.comtag:blogger.com,1999:blog-10781944.post-17499984245199958892009-07-14T16:18:05.995-07:002009-07-14T16:18:05.995-07:00I was also at the talk and I thought I would list ...I was also at the talk and I thought I would list a couple of my thoughts:<br /><br />1)Should we consider this a living environment or rather a graveyard?<br /><br />2)If we consider the sub-floor environment a graveyard and we sample the diversity of organisms at different depths are we essentially looking at a history of evolution of organisms over time? <br /><br />3)Keeping in mind that these diverse species are not even growing (and arguably not even alive), the only thing these organisms are probably good at is staying dormant. Gives a new view on survival of the fittest!Morgan Langillehttps://www.blogger.com/profile/15991960337694557528noreply@blogger.comtag:blogger.com,1999:blog-10781944.post-55001967532594743082009-07-14T15:53:39.038-07:002009-07-14T15:53:39.038-07:00Thank you for this post!
I have a question: would ...Thank you for this post!<br />I have a question: would you have any reference on those "phylogenetically very novel" sub-sea floor archaea?Bastien Boussauhttps://www.blogger.com/profile/12246598165006568055noreply@blogger.com