Long-term plastic mulching decreases rhizoplane soil carbon sequestration by decreasing microbial anabolism

Li, Yüze; Hou, Yuting; Hou, Quanming; Long, M. I. E.; Ya-li, Yang; Wang, Ziting; Liao, Yuncheng

doi:10.1016/j.scitotenv.2023.161713

Cited by 3 publications

(4 citation statements)

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“…Characterizing the effect of core taxa on C source utilization can enhance our understanding of the roles of microbial communities in soil C sequestration and agricultural development (Toju et al, 2018;Li et al, 2023). We found that core taxa had the greatest effect on soil C source utilization compared with other taxa (Fig.…”

Section: Discussionmentioning

confidence: 90%

“…The relative abundance of Module 3, for example, was signifi- cantly and positively correlated with the metabolism of the relatively recalcitrant C source α-cyclodextrin. These underline the effects of different fertilization on soil C source utilization, possibly through influencing patterns of community clustering (Li et al, 2023). Some critical soil functions are often performed primarily by specific soil microbials (Zhu et al, 2021).…”

Section: Discussionmentioning

confidence: 94%

“…Some current studies tend to simply classify life-history strategies based only on the relative abundance of bacterial phyla (Dai et al, 2021). Different functional groups OTUs exist under the same phyla, and a higher level of precision is needed to describe life-history (Ho et al, 2017;Delgado-Baquerizo et al, 2018;Li et al, 2023). Empirical studies have shown that it is feasible to use rrn copy number to predict the growth rate of individual bacteria with higher precision than microbial phylum relative abundance (Roller et al, 2016;Dai et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have shown that microbial interactions and organize into well-established ecological clusters that contain microbes with similar ecological preferences, and these ecological clusters have a major effect on ecosystem functioning (Wang et al, 2022b;Yang et al, 2022;Fan et al, 2023). Ecological clusters comprise the core microbial taxa, which are essential for maintaining functional stability, and they explain most of the observed changes in soil organic C under a ridge-furrow with plastic mulching system (Du et al, 2023;Li et al, 2023). Thus, identification of the core microbial clusters can enhance our understanding of the roles of microbes in soil C cycling in agroecosystems and provide insights with implications for soil ecosystem conservation and management.…”

Section: Introductionmentioning

confidence: 99%

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Effects of core soil microbial taxa on soil carbon source utilization under different long-term fertilization treatments in Ultisol

Mao,

Li,

Leng

et al. 2024

Soil Ecol. Lett.

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Core taxa play an important role in regulating soil carbon metabolism.• Ecological cluster with oligotrophic made key contributions to soil carbon metabolism.• Microbial cluster characteristics link microorganisms to carbon metabolism. Characterizing the ecological roles of core soil microbial species in soil carbon metabolism is critically important for enhancing carbon sequestration in agricultural systems; however, no studies to date have determined the effects of core soil microbial taxa on carbon metabolism under various long-term fertilization practices. Here, we collected soil samples from field plots that had been subjected to different fertilization practices for nearly 30 years and examined the long-term effects of fertilization on the preferences of core soil bacterial taxa for different carbon sources. We also examined the relative contribution of core soil bacterial taxa in utilization of different carbon source types in Biolog Eco microplates. Long-term fertilization treatment had a significant effect on soil properties and bacterial community structure. The core taxa were closely related to soil carbon source utilization. The co-occurrence network showed that the major ecological clusters containing core taxa made key contributions to soil carbon source utilization. The organic fertilization increased the abundance of a core cluster with a low weighted average rrn copy number. This ecological cluster was the most important factor affecting soil carbon source utilization even among soil physicochemical factors considered. Our findings indicate that core taxa characterized by oligotrophic bacteria have a major effect on carbon source utilization in Ultisols.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 94%