Effects of different rice straw on soil microbial community structure

Liu, Li; Ding, Mengjiao; Zhou, Lu-kuo; Chen, Yi; Li, Haiping; Zhang, Faming; Li, Gang; Zhou, Zifang; Zhang, Yi; Zhou, Xixin

doi:10.1002/agj2.20509

Cited by 16 publications

(19 citation statements)

References 38 publications

(44 reference statements)

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“…Across all treatments, Proteobacteria was the most dominant bacterial phylum, followed by Chloroflexi, Acidobacteria, and Nitrospirae, which is consistent with the findings of previous studies in paddy soils [ 61 , 62 ]. Proteobacteria is composed of numerous classes that are sensitive to copiotrophic conditions (K strategy), such as Beta- and Delta-proteobacteria [ 63 ].…”

Section: Discussionsupporting

confidence: 91%

Straw Incorporation with Nitrogen Amendment Shapes Bacterial Community Structure in an Iron-Rich Paddy Soil by Altering Nitrogen Reserves

Wang

Lin

et al. 2021

Microorganisms

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Incorporation of crop straw into the soil along with inorganic fertilization is a widespread agricultural practice and is essential in nutrient-scarce soils, such as iron-rich (ferruginous) paddy soils. The responses of soil bacterial communities to straw incorporation under different nitrogen inputs in iron-rich soils remain unclear. Therefore, 6000 kg ha−1 dry wheat (Triticum aestivum L. cv. Zhengmai 12) straw was applied to a rice paddy with and without nitrogen amendment (0, 80, 300, and 450 kg ha−1 N as urea), to investigate its effects on soil fertility and bacterial community structure. Organic matter, total nitrogen, and water contents tended to decrease in straw-incorporated soils with different nitrogen inputs. Proteobacteria was the dominant bacterial phylum across all treatments (26.3–32.5% of total sequences), followed by Chloroflexi, Acidobacteria, and Nitrospirae. Up to 18.0% of all the taxa in the bacterial communities were associated with iron cycling. Straw incorporation with nitrogen amendment increased the relative abundance of iron oxidizers, Gallionellaceae, while decreasing the relative abundance of iron reducers, Geobacteraceae. Bacterial community composition shifted in different treatments, with total nitrogen, water, and Fe(III) contents being the key drivers. Straw incorporation supplemented by 300 kg ha−1 N increased bacterial richness and enhanced all the predicted bacterial functions, so that it is recommended as the optimal nitrogen dosage in practice.

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Section: Discussionsupporting

confidence: 91%

Straw Incorporation with Nitrogen Amendment Shapes Bacterial Community Structure in an Iron-Rich Paddy Soil by Altering Nitrogen Reserves

Wang

Lin

et al. 2021

Microorganisms

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“…The abundance of Trichoderma may have increased, and the return of straw may have reduced the incidence of soil disease. However, the abundance of Trichoderma has a positive correlation with the content of nitrate nitrogen, the content of nitrate nitrogen has been increased, and maize absorption of nitrogen nutrients is promoted, leading to an increase in production (Liu et al 2021a;Vishwakarma et al 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Straw contains a large amount of nitrogen, phosphorus, potassium and other nutrients (Liu et al 2021a). The total amount of straw in China is signi cant, with the annual production of crop straw has exceeded 900 million tons (Shi et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Compost can increase the content of humic acid and soil fertility (Ndzelu et al 2020), incapacitate pathogenic bacteria (Klein et al 2011), and maintain or enhance the levels of colonization of arbuscular mycorrhizal fungi in roots (Cavagnaro 2015). The addition of decomposed straw increased the contents of soil humus and organic carbon and stimulated a potential bene cial microbial population (Liu et al 2021a).…”

Section: Introductionmentioning

confidence: 99%

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Reintroduction of Decomposed Straw To Maize Fields Resulted In Soil Microbial Community Change And Increased Corn Production

Zhou

Chen

et al. 2021

Preprint

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Purpose Returning decomposed straw to crop fields could address many agricultural shortcomings. In this study, the soil microbial community, soil nutrients, soil enzyme activities and maize yield were investigated after returning decomposed straw to the field. Methods To investigate the effects of returning decomposed straw to field on soil microorganisms and maize growth, field experiments were carried out to measure soil nutrient content, soil enzyme activity and maize yield, and the soil microbial community structure was measured by 16SRNA and ITS amplicon sequencing technology.Results The results showed that the contents of total nitrogen (TN), nitrate nitrogen (NN), total phosphorus (TP), available phosphorus (AP) and pH were significantly increased, and the contents of ammonium nitrogen (AN) and available kalium were decreased in both the rotary tillage (SR) and mulching (SM) treatments. The bacterial and fungal community structures in bulk and rhizosphere soils were clearly changed under SR and SM. The relative abundances of bacterial genera related to soil denitrification, such as Skermanella, Blastococcus, Geodermatophilus and Asanoa, were significantly increased. The relative abundances of Conexibacter, Streptomyces and Trichoderma, which bacteria that has shown to inhibit plant diseases, were increased. In addition, the relative abundances of growth-promoting bacteria, such as Arthrobacter and Mesorhizobium, were also significantly increased. Moreover, adding decomposed straw back to the field promoted the absorption of nutrients by maize, and resulted in higher yield of maize.Conclusions Our findings suggest positive responses of soil microbial community structure and maize growth to decomposition straw returning.

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“…This work showed that it is not the mutation pressure but other factors such as natural selection which plays a major role in shaping codon usage pattern. Liu, Ding, et al (2020) studied the effects of returning straw on the soil microbial community and found that returning straw increased soil organic C and that the analysis on the genera of soil microflora revealed that Pseudolabrys, Haliangium, Acidibacter, and Terracidiphilus were always dominant and played a significant role in straw decomposition. tested different ratios of sandstone and clay on the growth of potato and maize, and reported that compound soil ratios of 1:2 and 1:5 had the largest yield index and average yields.…”

Section: Research Areas Discussedmentioning

confidence: 99%

Agriculture, biology, and environment: Twenty first century challenges and opportunities

et al. 2021

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The 6th International Conference on Agricultural and Biological Sciences (ABS 2020), was planned to be held in the People's Republic of China. Due to the COVID-19 pandemic, ABS 2020, "Agricultural and Biological Sciences: Plant, Soil, Animal, and Environment", was the first online conference in Agricultural and Biological Sciences history. Each paper addressed a slightly different topic and provided identifiable challenges and research key questions in agriculture, agronomy, food production and security, and environmental hazards. The role of Agricultural and Biological Sciences of China is the generation of research knowledge that influence everyday activities. There were 41 manuscripts submitted, of which 25 were accepted for publication. The research domains varied and included the role of specific plant on soil C-cycling, haploid induction, and natural doubling of Zea mays L.; plant species and soil rhizosphere microflora; forest tree biomass succession and dynamics relevant to C-sequestration; making sandy land agriculture friendly; plantation age on C, N, and P stoichiometry; codon uses pattern of Gnetum luofuoense C.Y. Cheng using transcriptome data; suitability of plant landscape unit and natural parks; regeneration protocol of Jatropha curcas L., etc. The purpose of this special section is to generate an improved communication among international scientists that we hope will lead to enhanced food security.

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Effects of different rice straw on soil microbial community structure

Cited by 16 publications

References 38 publications

Straw Incorporation with Nitrogen Amendment Shapes Bacterial Community Structure in an Iron-Rich Paddy Soil by Altering Nitrogen Reserves

Straw Incorporation with Nitrogen Amendment Shapes Bacterial Community Structure in an Iron-Rich Paddy Soil by Altering Nitrogen Reserves

Reintroduction of Decomposed Straw To Maize Fields Resulted In Soil Microbial Community Change And Increased Corn Production

Agriculture, biology, and environment: Twenty first century challenges and opportunities

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