TY - JOUR
T1 - Microbial dietary preference and interactions affect the export of lipids to the deep ocean
AU - Behrendt, Lars
AU - Alcolombri, Uria
AU - Hunter, Jonathan E.
AU - Smriga, Steven
AU - Mincer, Tracy
AU - Lowenstein, Daniel P.
AU - Yawata, Yutaka
AU - Peaudecerf, François J.
AU - Fernandez, Vicente I.
AU - Fredricks, Helen F.
AU - Almblad, Henrik
AU - Harrison, Joe J.
AU - Stocker, Roman
AU - Van Mooy, Benjamin A.S.
PY - 2024/9/13
Y1 - 2024/9/13
N2 - Lipids comprise a significant fraction of sinking organic matter in the ocean and play a crucial role in the carbon cycle. Despite this, our understanding of the processes that control lipid degradation is limited. We combined nanolipidomics and imaging to study the bacterial degradation of diverse algal lipid droplets and found that bacteria isolated from marine particles exhibited distinct dietary preferences, ranging from selective to promiscuous degraders. Dietary preference was associated with a distinct set of lipid degradation genes rather than with taxonomic origin. Using synthetic communities composed of isolates with distinct dietary preferences, we showed that lipid degradation is modulated by microbial interactions. A particle export model incorporating these dynamics indicates that metabolic specialization and community dynamics may influence lipid transport efficiency in the ocean's mesopelagic zone.
AB - Lipids comprise a significant fraction of sinking organic matter in the ocean and play a crucial role in the carbon cycle. Despite this, our understanding of the processes that control lipid degradation is limited. We combined nanolipidomics and imaging to study the bacterial degradation of diverse algal lipid droplets and found that bacteria isolated from marine particles exhibited distinct dietary preferences, ranging from selective to promiscuous degraders. Dietary preference was associated with a distinct set of lipid degradation genes rather than with taxonomic origin. Using synthetic communities composed of isolates with distinct dietary preferences, we showed that lipid degradation is modulated by microbial interactions. A particle export model incorporating these dynamics indicates that metabolic specialization and community dynamics may influence lipid transport efficiency in the ocean's mesopelagic zone.
UR - http://www.scopus.com/inward/record.url?scp=85204040790&partnerID=8YFLogxK
U2 - 10.1126/science.aab2661
DO - 10.1126/science.aab2661
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C2 - 39265021
AN - SCOPUS:85204040790
SN - 0036-8075
VL - 385
SP - eaab2661
JO - Science
JF - Science
IS - 6714
ER -
