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Dark side of biodegradable microplastics in mangrove ecosystem: Plastisphere as an overlooked hotspot of sulfate-reducing metabolism
Regional Studies in Marine Science
2026
Yiqiao Zheng,
Qiqi Wu,
Yu Xia,
Hui Deng,
Yuanyuan Zhao,
Jiwei Luo,
Dan Feng,
C. Ge
Summary
Researchers exposed polyethylene and biodegradable polylactic acid microplastics to mangrove sediments for 150 days, finding that PLA microplastics enriched sulfate-reducing microbes more than PE microplastics and stimulated dissimilatory sulfate reduction, raising concerns that biodegradable plastics may disrupt carbon-sulfur biogeochemical cycles in mangrove ecosystems.