Soil Type Driven Change in Microbial Community Affects Poly(butylene adipate-co-terephthalate) Degradation Potential

• DOI: 10.1021/acs.est.0c04850
• Publication Date: 2021-03-24T22:52:21Z
• Authors: Yujuan Han; Ying Teng; Xia Wang; Wenjie Ren; Xiaomi Wang; Yongming Luo; Huimin Zhang; Peter Christie
• Keywords: Microcosm; Adipate; Biodegradable plastic; Inceptisol; Degradation; Mollisol; Ultisol; Bioaugmentation

Biodegradable mulch films have been developed as a suitable alternative to conventional nondegradable polyethylene films. However, the key factors controlling degradation speed of biodegradable in soils remain unclear. Here, we linked changes soil microbiome with rate promising material poly(butylene adipate-co-terephthalate) (PBAT) four types, lou (LS), fluvo-aquic (CS), black (BS), and red (RS), equivalent Inceptisols (the first two soils), Mollisols, Ultisols, using microcosms. The PBAT differed type, mineralization levels 16, 9, 0.3, 0.9% LS, CS, BS, RS, respectively, after 120 days. Metagenomic analysis showed that microbial community LS was more responsive than other three soils. hydrolase genes were significantly enriched but not stimulated by or RS. Several members Proteobacteria identified novel potential degraders, their enrichment extent positively correlated capacity. Overall, our results suggest environments harbored range PBAT-degrading bacteria degraders drives fate