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X-WR-CALNAME;VALUE=TEXT:UMCES Events
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DTSTART:20211107T020000
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DTSTART:20210314T020000
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UID:calendar.22537.field_date_time.0@www.umces.edu
DTSTAMP:20260414T184619Z
CREATED:20210421T131220Z
DESCRIPTION:July 14\, 2021 1:00pm to 2:00pm    \n    \n      \n\n\n    \n\n
               \nInstitute of Marine & Environmental Technology\n      \n\n
 \n\n\n  \n\n    \n\n              \n\n\n      \n  \n\n    \n\n            
   \n\n\nTitle: Estuarine virioplankton: Viromics\, biogeography\, and vira
 l populations\n\n\n\nSpeaker: Mengqi Sun (Ph.D. Candidate\, UMCES-IMET)\n
 \n\n\nAbstract: \nViruses are ubiquitous and abundant in the oceans\, infl
 uencing the biological abundance\, genetic exchange and biogeochemical cyc
 les in marine ecosystems. Viral metagenomes (viromes) have been investigat
 ed extensively via several large-scale ocean sequencing projects. Estuarie
 s are highly productive aquatic environments featuring dynamic environment
 al gradients\, providing a vital connection between marine and terrestrial
  ecosystems. However\, there has not been any systematic viromic studies i
 n estuaries.\n\n\n\nHere\, we investigated viromes of the Delaware and Che
 sapeake Bay\, two Mid-Atlantic estuaries. This is the first systematic stu
 dy of the spatial and temporal variation of the viral community in estuari
 ne habitats using deep metagenomics\, and also one of the highest quality 
 viromic datasets to date. We refer to this viromic dataset as the Delmarva
  Estuarine Virome (DEV).\n\n\n\nUnknown viruses represented the vast major
 ity of the dominant populations\, while the composition of known viruses\,
  such as pelagiphage and cyanophage\, appeared to be relatively consistent
  across a wide range of salinity gradient and in different seasons. Two in
 -depth investigations into a rare virus group (N4-like virus) and an abund
 ant virus group (pelagiphages) were conducted. N4-like viruses were confir
 med to be rare in the estuary\, and found to be more abundant in colder en
 vironments. Pelagiphage (viruses infecting SAR11 bacteria) abundance was f
 ound to have no correlation with environmental factors\, despite their ass
 ociation with oceanic environments. The methods used to study these groups
  indicate that more caution should be used when evaluating the relative ab
 undance of rare viruses\, compared to abundant viruses.\n\n\n\nThe differe
 nce of viral community between the Delaware Bay and Chesapeake Bay is sign
 ificantly more pronounced than the difference caused by temperature or sal
 inity\, indicating strong local profiles caused by the unique ecology of e
 ach estuary. Highly abundant viruses in both estuaries have close hits to 
 viral sequences derived from the marine single cell genomes or long read s
 ingle molecule sequencing\, suggesting that important viruses are still wa
 iting to be discovered in the estuarine environment.\n\n\n\nHost: Dr. Feng
  Chen\n\n\n\nIf you would like to attend virtually\, please email imetdire
 ctorsoffice@umces.edu
DTSTART;TZID=America/New_York:20210714T130000
DTEND;TZID=America/New_York:20210714T140000
LAST-MODIFIED:20210629T144256Z
SUMMARY:Virtual IMET Defense: Mengqi Sun (Ph.D. Candidate\, UMCES-IMET)
URL;TYPE=URI:https://www.umces.edu/events/virtual-imet-defense-mengqi-sun-p
 hd-candidate-umces-imet
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