We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Using a marine microalga as a chassis for polyethylene terephthalate (PET) degradation
Summary
Researchers genetically engineered a marine microalgae to produce enzymes that break down PET plastic (the kind used in bottles and synthetic fibers), demonstrating for the first time that a saltwater microalgae can be used as a biological platform for PET degradation. This proof-of-concept points toward eco-friendly, ocean-based solutions for tackling plastic pollution at its source.
We provide a promising and eco-friendly solution for biological decomposition of PET waste in a saltwater-based environment by using a eukaryotic microalga instead of a bacterium as a model system. Our results show that via synthetic biology the diatom P. tricornutum indeed could be converted into a valuable chassis for biological PET degradation. Overall, this proof of principle study demonstrates the potential of the diatom system for future biotechnological applications in biological PET degradation especially for bioremediation approaches of PET polluted seawater.
Sign in to start a discussion.
More Papers Like This
Engineering microalgae as a whole cell catalyst for PET degradation
Researchers engineered the diatom Phaeodactylum tricornutum to express PETase, a plastic-degrading enzyme, creating a solar-powered whole-cell biocatalyst capable of breaking down polyethylene terephthalate (PET) under saltwater conditions without external energy inputs.
Efficient secretion of a plastic degrading enzyme from the green algae Chlamydomonas reinhardtii
Scientists engineered green algae (Chlamydomonas reinhardtii) to produce and secrete PHL7, an enzyme capable of breaking down PET plastic. The algae successfully secreted active enzyme that degraded both PET and polyurethane plastics in laboratory tests. This approach suggests that photosynthetic microorganisms could potentially be deployed as a biological tool to help break down plastic pollution in the environment.
Functional expression of polyethylene terephthalate-degrading enzyme (PETase) in green microalgae
The PET-degrading enzyme PETase was successfully expressed and shown to be catalytically active in the green microalga Chlamydomonas reinhardtii, representing the first reported expression of PETase in a photosynthetic eukaryote. This proof-of-concept suggests the possibility of developing algae-based bioremediation strategies for PET plastic waste.
Breakdown of polyethylene therepthalate microplastics under saltwater conditions using engineered Vibrio natriegens
Scientists engineered a marine bacterium, Vibrio natriegens, to break down PET plastic into its basic chemical building blocks in saltwater conditions at moderate temperatures. The engineered bacteria display enzymes on their cell surface that can depolymerize PET without needing any pretreatment of the plastic. This biological approach could eventually help address ocean microplastic pollution, though significant work remains to scale the technology from the laboratory to real-world applications.
Marine PET Hydrolase (PET2): Assessment of Terephthalate- and Indole-Based Polyesters Depolymerization
Researchers characterized a marine enzyme (PET2) capable of breaking down PET plastic and related polyester materials under relatively mild conditions. Discovering and engineering enzymes that can degrade PET could help address the massive accumulation of PET microplastics in ocean environments.