Abundance and phylogenetic distribution of eight key enzymes of the phosphorus biogeochemical cycle in grassland soils

Garaycochea, Silvia; Altier, Nora; Leoni, C.; Neal, Andrew L.; Romero, Héctor

doi:10.1111/1758-2229.13159

Cited by 3 publications

(1 citation statement)

References 102 publications

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“…Soil micro-organisms are the most abundant life form in soil and play a crucial role in maintaining ecological functions such as biogeochemical cycles [11,12], litter decomposition, and plant growth [13]. Moreover, due to their sensitivity to environmental changes, shifts in microbial communities can reflect changes in ecological functions [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Long-Term Straw Returning and Nitrogen Fertilizer Reduction on Soil Microbial Diversity in Black Soil in Northeast China

Jiao,

Zhang,

Chen

et al. 2023

Agronomy

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Returning straw to the field, coupled with fertilizer application, is an effective means to improve the fertility of black soil in Northeast China. Previous studies have mainly focused on the physical and chemical properties of soil structure and fertility. However, few efforts have been made to study the impact of straw returning on the microbial community of black soil in Northeast China. Here, we studied the typical northeast black soil in Heilongjiang Province to characterize the effects of long-term chemical fertilizer application and straw returning on its bacterial community structure. High-throughput sequencing was conducted to characterize the bacterial community of northeast black soil under different agricultural fertilization treatments, and the main factors affecting the bacterial community of northeast black soil were revealed through bioinformatic analyses. The results of high-throughput sequencing analyses demonstrated that the main bacterial phyla in the black soil in Northeast China were Actinomycetes, Proteobacteria, Acidobacteria, Chloroflexus, and Bacteroidetes. Long-term application of chemical fertilizers significantly increased the fertility and crop yield of black soil in Northeast China but led to significant changes in bacterial community structure and a significant decrease in diversity. Although straw returning improved soil fertility, it did not alleviate the adverse effects of the long-term application of chemical fertilizers on soil bacterial communities. Furthermore, our results demonstrated that changes in soil pH were the main factor leading to variations in soil bacterial communities. Returning straw to the field based on fertilizer application can improve black soil fertility in Northeast China but fails to alleviate the adverse effects of fertilizer-induced soil acidification on the composition and diversity of soil bacterial communities. This suggests that returning straw to the field may not have a significant beneficial impact on the microbial ecology of the black soil of Northeast China. Therefore, further research is needed to establish new straw return strategies to maximize agricultural yields while minimizing ecological impacts.

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Section: Introductionmentioning

confidence: 99%

Effects of Long-Term Straw Returning and Nitrogen Fertilizer Reduction on Soil Microbial Diversity in Black Soil in Northeast China

Jiao,

Zhang,

Chen

et al. 2023

Agronomy

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New insights in bacterial organophosphorus cycling: From human pathogens to environmental bacteria

Lidbury,

Hitchcock,

Groenhof

et al. 2024

Advances in Microbial Physiology

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Synergistic Effects of Rice Straw Return and Nitrogen Fertilizer on Rhizosphere Bacterial Communities and Soil Fertility

Borny,

Mostakim,

Raihan

et al. 2024

JSPAE

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Returning straw to the field combined with nitrogen (N) fertilizer application is an effective way to enhance soil fertility. While previous studies have focused on soil's physical and chemical properties, the impact of straw returning on the microbial community has been less explored. In this study, we used four treatments including control (CK), nitrogen 150 kg ha−1 (N), straw return 10 tonnes ha−1 (SR), and combined SR and N (SRN= straw return 5 tonnes ha−1 + nitrogen 75 kg ha−1) to understand the effects of N fertilizer application and straw returning on bacterial community structure. Using high-throughput sequencing, we analyzed the bacterial community under different treatments and identified the main factors influencing soil bacterial communities. Results showed that soil properties such as pH, soil organic carbon (SOC), and available phosphorous (AP) were significantly higher in SR+N treatments. While AP, available nitrogen (AN), available potassium (AK), and total nitrogen (TN) were higher in sole N applied treatments. The results of high-throughput sequencing analyses demonstrated that the main bacteria at the phylum level were Actinobacteria (31-34%), Proteobacteria (25-30%), Acidobacteria (15-21%), and Chloroflexi (13-16%) across the treatments. Furthermore, the SR+N treatment exhibited the highest relative abundances of Dependentiae, Proteobacteria, Chloroflexi, and Bacteroidetes compared to all other treatments. Our results indicated that the combined application of straw return and N fertilizer enhanced soil fertility and increased the abundance of beneficial soil bacteria. Additionally, SOC emerged as the primary factor influencing variations in soil bacterial communities. However, several beneficial bacteria were less abundant in the combined treatment and more prevalent in the sole SR or sole N treatments. Thus, further research is necessary to develop new straw return strategies that optimize agricultural yields while minimizing ecological impacts.

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Abundance and phylogenetic distribution of eight key enzymes of the phosphorus biogeochemical cycle in grassland soils

Cited by 3 publications

References 102 publications

Effects of Long-Term Straw Returning and Nitrogen Fertilizer Reduction on Soil Microbial Diversity in Black Soil in Northeast China

Effects of Long-Term Straw Returning and Nitrogen Fertilizer Reduction on Soil Microbial Diversity in Black Soil in Northeast China

New insights in bacterial organophosphorus cycling: From human pathogens to environmental bacteria

Synergistic Effects of Rice Straw Return and Nitrogen Fertilizer on Rhizosphere Bacterial Communities and Soil Fertility

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