ArticleMicrobiology spectrum2025
Straw application promotes soil carbon storage by affecting aggregate-associated bacterial community structure and RuBisCO activity: a 35-year field experiment.
Article in Microbiology spectrum, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Synergistic effects of crop straw formulations onMicrobiology spectrum · 2026Article
- Effects of soybean intercropping density on photosynthetic characteristics and disease resistance in tobacco.Frontiers in plant science · 2025Article
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Authors and funding
7 authors.
Funding
Abstract
Soil bacterial community structure and carbon-fixation functional genes are easily influenced by straw application, especially in the microenvironment of the aggregate. Here, soil aggregate samples were collected from a 35-year rice-wheat rotation experiment field with the following treatments: no straw or chemical fertilizer (Ctrl); chemical fertilizer (NPK); and straw application + chemical fertilizer (NPKS). Compared with the control and NPK treatments, NPKS treatment enhanced the contents of soil organic carbon (SOC) and microbial biomass carbon (MBC) significantly in 0.25-1 mm aggregate soil. Similarly, higher ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) activity (172.92 nmol CO IMPORTANCE: Paddy soils have been under frequent disturbance through field management activities (fertilization and straw application) for a long time, and carbon pool change is active and frequent. Soil aggregate plays an important role in carbon capture and storage. Variations in aggregate could alter microbial habitats and life strategies, thus triggering the renewal of soil organic carbon (SOC) encapsulated in aggregates. Straw application has both economic and ecological benefits, and it has been widely promoted in paddy fields with obvious effects. Here, a 35-year long-term positioning experiment was carried out to explore the mechanisms through which microbial communities increase SOC content as influenced by soil aggregate size. The findings enhance our understanding of carbon storage and aggregate-associated microbial mechanisms in paddy soil, in addition to facilitating the enhancement of paddy productivity and promoting the rational utilization of straw resources.
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