Impact of Biochar on Rhizosphere Bacterial Diversity Restoration Following Chloropicrin Fumigation of Planted Soil

Li, Jun; Chen, Yan; Qin, Xiao; Cao, Aocheng; Lu, Anxiang

doi:10.3390/ijerph19042126

Cited by 13 publications

(8 citation statements)

References 41 publications

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“…Biochar amendment increased the relative abundance of Micromonospora, which is known to have plant growth-promoting traits including nitrogen fixation and the inhibition of plant pathogens (Li et al, 2022); our results were in agreement with this study, for being the dominant genus in 30 mesh. Micromonospora not only presented higher relative abundance in biochar and BOF treatments compared with CK but also showed a strong positive correlation with AN, AP, and K. Bacillus spp.…”

Section: Discussionsupporting

confidence: 92%

Effect of different biochar particle sizes together with bio-organic fertilizer on rhizosphere soil microecological environment on saline–alkali land

Zhang

Liang

et al. 2022

Front. Environ. Sci.

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The application of biochar and bio-organic fertilizers (BOFs) is effective for improving soil ecological environments. However, soil physicochemical properties and the microbiome diversity of rhizosphere soil after the application of different-sized particles of biochar together with BOF in saline–alkali land have not been thoroughly described. A field experiment was performed to investigate the effects of different-sized particles of apple shoot biochar (60, 30, and 10 mesh) together with BOF on soil bacteria (using Illumina high-throughput sequencing) and the physicochemical properties of Mesembryanthemum cordifolium L. f. grown on saline–alkali land. Results indicated that the combined application of BOF and 10–60 mesh biochar reduced the volumetric weight of soil by 14%–29%, respectively, and additionally decreased soil electrical conductivity, increased the aerial biomass of the M. cordifolium L. f. by over 30%, and notably improved soil water–holding capacity, with 60 mesh giving the best results; organic carbon (OC), organic matter (OM), total nitrogen (N), available phosphorus, alkaline nitrogen, total potassium (K), and total phosphorus (P) were all significantly increased by the addition of combined biochar and BOF; thereinto, field capacity, N, P, K, OC, and OM were positively correlated with the bacterial community structure of coapplied biochar and BOF. There were no significant differences in the richness of total bacteria among the treatments; Proteobacteria, Actinobacteria, and Chloroflexi accounted for >70% of the total bacteria in each treatment; Norank_f__Geminicoccaceae and Micromonospora were the dominant genera across the treatments. The findings suggested that plant growth, physicochemical properties, and community diversity of rhizosphere bacteria in saline–alkali land were significantly positively influenced by biochar 60 mesh plus BOF, followed by biochar 10 and 30 mesh plus BOF. This conclusion could facilitate the study of the ecological functions of biochar and BOF, as well as their interactions with salt-tolerant plants on saline–alkali soil, which can be used to provide exploration ideas for saline–alkali land improvement.

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Section: Discussionsupporting

confidence: 92%

Effect of different biochar particle sizes together with bio-organic fertilizer on rhizosphere soil microecological environment on saline–alkali land

Zhang

Liang

et al. 2022

Front. Environ. Sci.

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“…It has been reported that biochar can effectively improve the physicochemical properties of soil and cause alterations in the soil microbial community because of the special structure and properties of biochar (Lucheta et al, 2016). Bacterial diversity increased after the soil was amended with biochar for half a year, which was consistent with previous studies (Li et al, 2022). Additionally, it was observed that the abundance of bacteria in soil was increased by the application of chemical fertilizers, particularly F and FM.…”

Section: Resultssupporting

confidence: 92%

Biochar combined with magnesium fertilizer improves cabbage (Brassica oleraceae L.) yield by modulating physicochemical characteristics and the bacterial community in acidic soil

Yan

et al. 2023

Soil Use and Management

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Biochar and magnesium (Mg) fertilizers have gained increasing attention in agriculture for their potential benefits. However, their combined effects on vegetable growth in southern acidic soils have not been fully elucidated. To address this issue, a study was conducted with six treatments all of which included a baseline amount of compound fertilizer (CK), an increased amount of compound fertilizer (F), Mg fertilizer (M), biochar (BC), biochar combined with Mg (BCM) and an increased amount of compound F with Mg (FM), to investigate their synergistic effects on soil physicochemical properties, enzyme activity, microorganisms and cabbage yield. The results of the study showed that compared with CK, the M, BC and BCM treatments all increased soil organic matter (SOM), exchangeable magnesium (Ex‐Mg), acid phosphatase (ACP) and yield, while the F treatment led to a 5% decrease in SOM. The BCM treatment significantly increased SOM, Ex‐Mg, ACP by 14%, 40%, and 25%, respectively. The most abundant phyla in BCM processing were Proteobacteria (21%), Chloroflexi (19%) and Actinomycetes (17%); the most abundant genera were Bacillus (8%). Further, the effect of BCM on crop growth promotion was better than that of FM, and the economic analysis showed that compared with FM, the benefit of BCM increased by 14%. Through structural equation modelling analysis, the synergistic increase in yield was because of the increase in soil TP, Ex‐Mg, NO3−–N and β‐GC caused by BCM, improving soil nutrients and microbial communities, thereby promoting cabbage growth. Therefore, the combined application of biochar and Mg in acidic soil could significantly improve soil fertility and crop productivity, while also reducing the need for costly chemical fertilizers, thereby offering a promising and cost‐effective approach for sustainable agriculture.

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“…This result is consistent with the findings of Deng et al, who reported enhanced Micromonospora growth under the biochar and microcapsule treatment of phenanthrene polluted soil [63]. According to Li et al, Micromonospora has plant-growth-promoting traits, including nitrogen fixation and the inhibition of plant pathogens, therefore, it may aid B_BOF-and BOF-induced plant growth [64]. Gaiella and norank_o_Gaiellales are both Actinobacteria, which promote plant growth by increasing the nutrient availability and assimilating and enriching the beneficial bacteria.…”

Section: Discussionsupporting

confidence: 92%

Impact of Biochar and Bioorganic Fertilizer on Rhizosphere Bacteria in Saline–Alkali Soil

Zhang

Liang

et al. 2022

Microorganisms

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Biochar and bioorganic fertilizers (BOF) that are used in agriculture can, both directly and indirectly, impact rhizosphere soil microorganisms. However, changes to the halophyte rhizosphere bacterial community after applying biochar and BOF to saline–alkali soil have not been thoroughly described. This study has investigated the bacterial communities of halophytes in saline–alkali soil through the addition of different biochar and BOF formulas using Illumina-based sequencing of the 16S rRNA gene fragment. B_BOF (biochar and BOF combined application) had the best effect, either by promoting the plant growth or by improving the physical and chemical properties of the soil. The concentration of the rhizosphere bacterial communities correlated with the changes in soil organic matter (OM) and organic carbon (OC). Proteobacteria, Actinobacteria, Chloroflexi, and Acidobacteria accounted for >80% of the total bacteria in each treatment. In addition, the abundance of Micromonospora was much higher in response to B_BOF than to the other treatments. BOF, with or without biochar, significantly influenced the bacterial community composition in the saline–alkali soil. The OC, OM, total nitrogen, and the available phosphorus had significant effects on the bacterial structure of this soil. The complex correlation of the bacterial communities between CK and B_BOF was higher compared to that between CK and FB or between CK and BOF. These findings suggested that the plant growth, the soil characteristics, and the diversity or community composition of the rhizosphere bacteria in saline–alkali soil were significantly influenced by B_BOF, followed by BOF, and then biochar; fine biochar had a stronger effect than medium or coarse biochar. This study provides an insight into the complex microbial compositions that emerge in response to biochar and BOF.

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Impact of Biochar on Rhizosphere Bacterial Diversity Restoration Following Chloropicrin Fumigation of Planted Soil

Cited by 13 publications

References 41 publications

Effect of different biochar particle sizes together with bio-organic fertilizer on rhizosphere soil microecological environment on saline–alkali land

Effect of different biochar particle sizes together with bio-organic fertilizer on rhizosphere soil microecological environment on saline–alkali land

Biochar combined with magnesium fertilizer improves cabbage (Brassica oleraceae L.) yield by modulating physicochemical characteristics and the bacterial community in acidic soil

Impact of Biochar and Bioorganic Fertilizer on Rhizosphere Bacteria in Saline–Alkali Soil

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