Glycosphingolipids Interactions Coccolithophores Unicellular Most abundant species Emiliana huxleyi Found in temperate subtropical and tropical oceans I mportant part of the planktonic base of marine food webs ID: 599205
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Slide1
Plankton, Viruses, Glycosphingolipids: InteractionsSlide2
Coccolithophores
Unicellular
Most abundant species =
Emiliana huxleyiFound in temperate, subtropical, and tropical oceansImportant part of the planktonic base of marine food websForms extensive bloomsSlide3
What patterns do you see in this satellite image of
coccolithophores
(teal green)? Slide4
Phytoplankton and VirusesPhytoplankton abundance =
regulated
by interactions of:
abiotic factors (e.g., nutrients and light availability)biotic factors (e.g., grazers and viruses).E.
huxleyi
form
massive annual spring blooms
that are routinely
terminated
by
coccolithoviruses
.Slide5Slide6
Glycosphingolipids (GSL)
A type
of
lipid that has a carbohydrate attached.Found on outer surface of cell membranes for all organisms…aka both
phytoplankton and viruses have them
.
Act
as markers for cell recognition.
Virus
GSLs
trigger a cell-signaling pathway that results in the Programmed Cell Death of the host cell.Slide7Slide8
BrainstormHow can scientists use
the information
about:
the presence of GSLs in both phytoplankton and virus cellsthe fact that viruses often terminate a bloom of
phytoplankton
to
investigate the infection
success of
viruses in a phytoplankton
bloom?Slide9
Abundance Data Challenge
Challenge =
What
patterns do you notice in the abundance of the two groups? What hypothesis can you draw as to why the groups demonstrate this pattern?Slide10
Abundance Data Challenge
Challenge =
What patterns do you notice in the abundance of the two groups?
What hypothesis can you draw as to why the groups demonstrate this pattern?Draw on your data visualization the pattern in abundance of the other dataset based upon the patterns in your dataset?
Datasets:
(1) Phytoplankton & Virus
(2) Host GSL & Virus GSLSlide11
Time (days)
Abundance
Phytoplankton and Virus Abundances
Phytoplankton
VirusSlide12
Time (days)
Abundance
Host GSL and Virus GSL Abundances
Host GSL
Virus GSLSlide13
Time (days)
Abundance
Phytoplankton, Virus, and GSL Abundances
Host GSL
Virus GSL
Phytoplankton
VirusSlide14
Time (days)
Abundance
Phytoplankton, Virus, and GSL Abundances
Host GSL
Virus GSL
Phytoplankton
Virus
How does the abundance of phytoplankton and viruses compare over time? Slide15
Time (days)
Abundance
Phytoplankton, Virus, and GSL Abundances
Host GSL
Virus GSL
Phytoplankton
Virus
How do scientists use the presence and absence of
GSLs
to
understand the interaction between phytoplankton and viruses?