The long-term straw return resulted in significant differences in soil microbial community composition and community assembly processes between wheat and rice

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 27, 2025

Straw return is widely promoted as an environmentally sustainable practice to enhance soil health and agricultural productivity. However, the impact of varying straw durations on microbial community composition development remains insufficiently understood within a rice-wheat cropping system. In this study, samples were collected during wheat rice harvesting periods following seven durations: no (NR) or 1, 3, 5, 7, 9, 11 years (SR1, 11), sequencing was performed. The results revealed biphasic pattern in alpha diversity (Chao1 Shannon) communities with increasing duration, characterized by initial increase followed subsequent decrease. Specifically, SR9 group exhibited highest Chao1 Shannon values, while SR3 showed values. PCoA indicated significant shifts due return, particularly compared NR. obvious changed six bacterial phyla (Verrucomicrobiota, Proteobacteria, Desulfobacterota, MBNT15, Actinobacteriota, Gemmatimonadota) periods, especially Proteobacteria. Correlation analysis between environmental factors demonstrated these factors, pH total organic carbon (TOC) (p < 0.05), harvest, indicating enrichment after may be related accumulation TOC. Furthermore, network period found more complex, lower stability period. This complexity closely associated TOC fields. Deterministic processes, including homogeneous heterogeneous selection, play crucial role shaping both systems. Environmental significantly influenced assembly recycling. Our study enhances understanding system, which provide valuable insights for studying mechanisms managing can promote fertility restoration.

Language: Английский

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Rhizosphere-associated bacterial and fungal communities of two maize hybrids under increased nitrogen fertilization

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: March 3, 2025

Introduction The selection and application of nitrogen-efficient maize hybrids have significantly bolstered contemporary food security. Nevertheless, the effects heightened nitrogen fertilizer demand these crops on composition assembly soil microbial communities in agricultural production require further elucidation. Methods In this study, four managements rhizosphere bacterial fungal community assembly, co-occurrence network function two (LD981 DH605) were compared. Results discussion Findings revealed that was primarily shaped by deterministic processes, while stochastic processes played a pivotal role assembly. N-efficient hybrid DH605 had more stable than N-inefficient LD981. At N3 (130 g N/m 2 ) rate, networks most complex but unstable, followed N2 (87 ), N0 (0 N1 (43 rates. Excessive rate (N3) increased relative abundance denitrification genes nirK norB enriching nitrogen-related genus such as Nitrolancea Nitrosospira . It led to an increase pathways cysteine methionine metabolism pyruvate metabolism. management practices (i.e. N rates) ultimately directly or indirectly reflected functions. Our findings illustrate relationship between appropriate crop measures optimizing promoting use, which is necessary for sustainable

Language: Английский

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Rain-fed spring maize exhibits growth stability through rhizosphere microbial responses to stover return and organic fertilizer application

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Mechanisms of chemical polymers and microbial residues in affecting organic matter stabilization under varying carbon/nitrogen ratios during composting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162879 - 162879

Published: April 1, 2025

Language: Английский

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Impacts of trophic interactions on carbon accrual in soils

Trends in Microbiology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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