Effects of biodegradable film mulching on bacterial diversity in soils

Abstract

The spread of biodegradable plastic lm (BDFs) not only increase grain yield but also reduce the environmental pollution from plastic lm to a large extent. Soil microbes have been considered to be involved in biodegradation processes.However, the study of microbes diversity in soil mulched with biodegradable plastic lm remains limited. Here, we compared the diversity of microbes between soils with biodegradable lm and non-biodegradable lm (NBDF) mulch.The results showed that BDFs affected on the soil quality parameters, such as total C, P and NH 4 + -N, but also on the microbes species richness (ACE; Chao1) and diversity (Simpson index; Shannon index). In terms of dominant phyla and genera, BDFs and NBDF can in uence the abundance of disparate species. Furthermore, BDFs could also contribute to improve the richness of the important functional bacterial groups in soil, e.g. Pedomicrobium and Comamonas, both of which have been found to be involved in the degradation of plastic residues in soil. Finally, we found that BDFs improved the transformation of nitrogen through increased signi cantly the abundances of Nitrobacter and Nitrospira. Our results highlight the impact of BDFs mulch on the abundance of functional bacteria in the soil.

Effects of Film Mulching on Soil Microbial Diversity and Community Structure in the Maize Root Zone under Drip Irrigation in Northwest China

“…This is different from the results obtained in this study [39]. First, this may be due to the different mulching materials; the sensitivity of soil microorganisms to changes in the external environment is different [40]. Second, this may be because this study is a short-term experiment and has little effect on soil fungal diversity [41].…”

Degradation characteristics of biodegradable film and its effects on soil nutrients in tillage layer, growth and development of taro and yield formation

“…In the present study, the findings revealed that different biodegradable films had different degrees of field degradation, which may be caused by different formulations of biodegradable films leading to different effects of soil microorganisms on them (Eksiler et al 2017 ; Xue et al 2021 ). Additionally, the degradation of three biodegradable films began to be induced at 43 ~ 59d after mulching, and large cracks appeared at 62 ~ 104d after mulching.…”

Dietary Methionine Restriction Improves Gut Health and Alters the Plasma Metabolomic Profile in Rats by Modulating the Composition of the Gut Microbiota

“…The gut microbiota plays a critical role in gut growth, nutrient absorption, and host health [21]. Higher Simpson index values indicate lower community diversity [22]. The MetR group had the richest microbiota species diversity compared to the CON group, as evidenced by the reduced Simpson indices.…”