Passive Diffusion Rates of Phaeocystis globosa Across its Cell Lipid Bilayer
Confirmation
1
Document Type
Poster
Location
ONU McIntosh Center; McIntosh Activities Room
Start Date
21-4-2023 12:00 PM
End Date
21-4-2023 12:50 PM
Abstract
Passive uptake into algal colonies can exercise significant control over primary production. Passive diffusion can bring secondary metabolites into the cell or allow wastes to be expelled. While passive diffusion of compounds across the membrane of single celled organisms has become a well-defined process, uptake across a colonial membrane is still poorly understood. Passive diffusion across cell lipid bilayers depends strongly on both polarity and molecular size. However, polarity is not suspected to have a role in diffusion across the colonial envelope. This study examined passive diffusion in a colonial alga, Phaeocystis globosa, using NMR spectroscopy. The rate of exchange between the colonial matrix and the bulk media was measured for N compounds and the physical properties of each used to determine underlying factors that influence diffusion.
Recommended Citation
Mobley, Erica Bronwyn and Spiese, Christopher, "Passive Diffusion Rates of Phaeocystis globosa Across its Cell Lipid Bilayer" (2023). ONU Student Research Colloquium. 32.
https://digitalcommons.onu.edu/student_research_colloquium/2023/posters/32
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Passive Diffusion Rates of Phaeocystis globosa Across its Cell Lipid Bilayer
ONU McIntosh Center; McIntosh Activities Room
Passive uptake into algal colonies can exercise significant control over primary production. Passive diffusion can bring secondary metabolites into the cell or allow wastes to be expelled. While passive diffusion of compounds across the membrane of single celled organisms has become a well-defined process, uptake across a colonial membrane is still poorly understood. Passive diffusion across cell lipid bilayers depends strongly on both polarity and molecular size. However, polarity is not suspected to have a role in diffusion across the colonial envelope. This study examined passive diffusion in a colonial alga, Phaeocystis globosa, using NMR spectroscopy. The rate of exchange between the colonial matrix and the bulk media was measured for N compounds and the physical properties of each used to determine underlying factors that influence diffusion.