Direct and indirect effects of long‐term ditch‐buried straw return on soil bacterial community in a rice–wheat rotation system

Yang, Haishui; Meng, Yi; Feng, Jiguang; Li, Yifan; Zhai, Silong; Liu, Jian

doi:10.1002/ldr.3481

Cited by 29 publications

(18 citation statements)

References 68 publications

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“…Fungi are the dominant fauna degrading crop straw. Returning straw to the field can increase the diversity and the activity of soil fungi, especially the ratio of fungi to bacteria (Yang et al, 2020b). In this study, the presence of straw significantly increased the Sobs and Shannon indices, indicating that straw return increased the diversity of soil fungi.…”

Section: Diversitysupporting

confidence: 48%

The Effects of Earthworms on Fungal Diversity and Community Structure in Farmland Soil With Returned Straw

et al. 2020

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BackgroundTo promote the decomposition of returned straw, reduce the incidence of soil-borne diseases caused by returned straw, and accelerate the conversion of straw carbon into soil carbon, we inoculated earthworms into fields with returned straw. The earthworms accelerated straw degradation and promoted carbon conversion. However, the impact of externally inoculated earthworms on the farmland soil ecosystem, especially the structure and the function of its microbial community, remains unclear.MethodsWe analyzed the effects of straw return and earthworms on the diversity of fungal populations and the community structure of dominant fungal taxa in soil by quantifying fungal population size and community composition via PCR amplification of internal transcribed spacer genes and 18S rRNA gene sequencing.ResultsThe results showed that earthworm inoculation significantly accelerated the degradation of rice straw and promoted the conversion of straw carbon to soil carbon. Both fungal abundance and α-diversity (Sobs and Shannon indices) were higher in the plots with surface straw but without earthworms than in those inoculated with earthworms and in the CK. Principal component analysis indicated that straw return increased the diversity and the abundance of the fungal community, whereas earthworms inhibited this expansion of the fungal community caused by straw return. Interestingly, the overall differences in fungal community composition were smallest in plots with straw return, while the dominant fungal community features in plots inoculated with earthworms were closer to those of the CK.ConclusionGenerally, straw return stimulated unclassified_K_fungi, Pseudeurotium, and Fusarium with strong cellulolytic ability. In contrast, the abundances of Stachybotrys, unclassified_c_Sordariomycetes, unclassified_f_Lasiosphaeriaceae, and Schizothecium were higher in the plots inoculated with earthworms and in the CK. Furthermore, evolutionary analysis showed that the evolution of soil fungal communities tended to diverge after straw return, and the evolutionary directions of fungal species in the plots inoculated with earthworms were similar to those in the CK.

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Section: Diversitysupporting

confidence: 48%

The Effects of Earthworms on Fungal Diversity and Community Structure in Farmland Soil With Returned Straw

et al. 2020

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“…It is interesting to highlight that soil parameters such as TOC and some nutrients like TN, Mg and B were associated with changes in soil bacterial community, although this association was not observed in the fungal community. Similar results were observed by Yang et al [60] and Zhang et al [61] who found a link between the bacterial community and soil chemical properties. Organic carbon is considered necessary to alter microbial community regardless other factors [62] and is well known that compost enhance carbon and nitrogen in soils for microbial communities [63].…”

Section: Discussionsupporting

confidence: 90%

Changes on Bacterial and Fungal Soil Communities in Long-Term Organic Cropping Systems

Cuartero¹,

Özbolat²,

Sánchez-Navarro³

et al. 2021

Preprint

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Microbial communities play a key role in sustainable agriculture. However, we still need more in-formation, to understand the complex response of the microbial community to long-term organic farming, which aims to reduce synthetic fertilizer and pesticide use in order to produce sustainably and improve soil quality. We have assessed the long-term effect of two organic cropping systems and a conventional system on the microbial soil community structure using high-throughput se-quencing analysis. We analyzed the link between these communities and changes in soil properties and crop yield. Results showed that the crop yield was similar among the three cropping systems. Soil properties, such as total organic carbon, nitrogen, ammonium, magnesium and boron, influ-enced changes in the bacterial community structure. A linear discriminant analysis effect size (LEfSe) showed different bacteria and fungi as key microorganism of each of the three different cropping systems, in addition, our results reflected that fungal community were more sensitive than bacteria to cropping system. This research provides an insight about changes occurred in soils, especially in microbial communities considering the effect of that changes in crop yield which were remained stable among the different cropping systems.

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“…Gemmatimonadetes are considered as oligotrophic organisms (Pascault et al, 2013). Negative relationships were observed between Gemmatimonadetes and SOC (Yang et al, 2020). In addition, Gemmatimonadetes act as a generalist and can adapt to the various edaphic environments, such as low soil moisture, anoxic conditions and a wide range of nutrient concentrations (DeBruyn et al, 2011).…”

Section: Fungi Diversity and Bacterial Phyla Are The Major Drivers Of Soil Multifunctionalitymentioning

confidence: 99%

Bacterial taxa and fungal diversity are the key factors determining soil multifunctionality in different cropping systems

Zhang

Jia

et al. 2021

Land Degrad Dev

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Soil microbes in the topsoil have long been the centre of cropping systems, yet the influence of subsoil microbes on soil functions remains elusive. Sustainable crop management will require an in-depth understanding of interactions of cropping patterns, soil microbials and multifunctionality. This study aimed to explore the relationships between soil microbials and multifunctionality in both topsoil and subsoil of different cropping systems. We did paired samplings from four cash crops and adjacent wheat/ maize rotation system fields at 0-15 cm and 15-30 cm depths on calcareous soils: cotton (C)-wheat (WC), grape (G)-wheat (WG), vegetable (V)-wheat (WV) and watermelon (W)-wheat (WW). The results showed that soil multifunctionality in topsoil was higher than in subsoil across all soil samples. In topsoil, soil multifunctionality in W was significantly higher than other cash crops, and the highest and lowest values were in the WG and WC, respectively. In the subsoil, soil multifunctionality in the C was significantly lower than other cash crops. Across the wheat fields, soil multifunctionality were significantly higher in WG and WW than in WC and WV. The structural equation model showed that soil organic carbon, bacterial community composition and fungal diversity were positively correlated with soil multifunctionality in both soil depths. Proteobacteria and Bacteroidetes in topsoil were the important drivers, while Firmicutes and Gemmatimonadetes were in the subsoil. Our results suggest that microbes in both topsoil and subsoil should be integrated into agricultural management practices. The alteration of fungal diversity and bacterial community composition may significantly affect soil multifunctionality in intensive agroecosystems.

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Direct and indirect effects of long‐term ditch‐buried straw return on soil bacterial community in a rice–wheat rotation system

Cited by 29 publications

References 68 publications

The Effects of Earthworms on Fungal Diversity and Community Structure in Farmland Soil With Returned Straw

The Effects of Earthworms on Fungal Diversity and Community Structure in Farmland Soil With Returned Straw

Changes on Bacterial and Fungal Soil Communities in Long-Term Organic Cropping Systems

Bacterial taxa and fungal diversity are the key factors determining soil multifunctionality in different cropping systems

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