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TZUNTIL:20270328T010000Z
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DTSTAMP:20260530T134154Z
DESCRIPTION:Around 20% of all the photosynthesis on Earth (comparable to th
 e productivity of all terrestrial rainforests combined) is carried out by 
 microscopic algae (diatoms) drifting in our oceans. Yet the rate of photos
 ynthesis and the fate of the fixed carbon (whether it is rapidly recycled 
 or sinks into long-term storage) are strongly shaped by the bacteria that 
 interact with them. In this talk\, I will describe how bacterial strategie
 s for locating and interacting with diatom hosts influence these outcomes.
  Drawing on examples from my recent research\, I will show how certain bac
 teria &ldquo\;lure&rdquo\; their algal partners into shedding their protec
 tive silica shells\, leaving them vulnerable to algicidal attack. I will a
 lso highlight how bacterial chemotactic behavior and cell morphology (such
  as long tubular extensions) enhance their ability to access algal-derived
  carbon and remain in close proximity to hosts. These strategies are not u
 nique to marine systems and may offer broader insights into microbial inte
 ractions in other environments\, such as plant rhizospheres. Finally\, I w
 ill outline ongoing work extending these findings from marine to freshwate
 r ecosystems\, where algal&ndash\;bacterial interactions remain underexplo
 red but are likely just as ecologically significant.
DTSTART;TZID=Europe/Berlin:20250605T123000
DTEND;TZID=Europe/Berlin:20250605T140000
LOCATION:H6\, Geo
SUMMARY:Dr. Clara Martínez-Pérez\, Limnological Research Station\, Departme
 nt of Hydrology\, BayCEER (Homepage): Biogeochemistry at the microscale: i
 nsights from algal–bacterial interactions
TRANSP:TRANSPARENT
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