Tobacco bacterial wilt suppression with biochar soil addition associates to improved soil physiochemical properties and increased rhizosphere bacteria abundance

Zhang, Chengsheng; Lin, Yong; Tian, Xueying; Xu, Qian; Zhihou, Chen; Lin, Wei

doi:10.1016/j.apsoil.2016.12.005

Cited by 120 publications

(76 citation statements)

References 35 publications

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“…The weighted UniFrac distances (Figure 4) suggested a significant influence of biochar on soil bacterial community structure. This result indicated that the soil microbial community structure and function became more stable with biochar addition, which were caused by the improvement of soil properties after adding biochar [60][61][62]. These findings were owing to the shifts in soil environments (e.g., pH, SOM, N, P, and K).…”

Section: Effect Of Biochar Addition On Soil Bacterial Community Strucmentioning

confidence: 86%

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Luo

Song

et al. 2020

Sustainability

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Biochar has been widely used to ameliorate soil quality and increase crop productivity through enhancement of nutrient availability and microbial community. The Karst yellow soil in China is characterized by severe soil degradation owing to intensive nutrient leaching. However, the biochar addition effects on the changes of Karst yellow soil are unclear, and the adequate number of biochar dosages to explain optimum of plant growth in this soil area remains poorly understood. In this study, pot experiments were conducted to examine the effects of biochar addition (1%, 3%, 5%, 7%, and 9% by weight; 0% as a control) on bacterial abundance and community structure via high-throughput sequencing coupled with bioinformatics methods applied to Karst yellow soil with planting ryegrass (Lolium perenne L.) and daylily (Hemerocallis fulva). After adding biochar for 188 days, significantly increased pH, soil organic matter, total nutrient contents, and bacterial abundance, but decreased available nitrogen, were observed. Changed bacterial community structures were found in biochar treatments compared with those without biochar. In both soils of planted ryegrass and daylily, the optimum soil bacterial abundance was found in 7% biochar dosage, but the lowest values were in the controls (0%). Taxonomic analysis identified that Micrococcaceae (24.53%), Oxalobacteraceae (11.87%), and Nocardioidaceae (7.89%) were the dominant family in the soil of ryegrass growth, and Micrococcaceae (16.20%), Xanthomonadaceae (6.94%), and Nocardioidaceae (6.41%) were the dominant family in soil of daylily growth. Canonical correspondence analysis showed that the alterations of soil bacterial abundance and community were highly interrelated with soil chemical properties. The results provided a better understanding of the mechanisms underlying the plant-soil microbe interactions and their responses to biochar dosages in low fertility soil regions.

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Section: Effect Of Biochar Addition On Soil Bacterial Community Strucmentioning

confidence: 86%

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Luo

Song

et al. 2020

Sustainability

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“…Graber et al () reported that biochar promoted pepper plant growth, which resulted in more abundant rhizosphere culturable bacteria. Rhizosphere soil treated with biochar had higher acidity, porosity, cation exchange capacity, and available nutrients, which lead to increased bacterial richness and diversity in the tobacco rhizosphere (Zhang, Lin, et al, ). Similarly, in a pot experiment with biochar amendments, microbial communities were more sensitive to the biochar amendment in rhizosphere than in the bulk soil (Dai et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…It does not reveal the absolute abundance of OTUs (Tourlousse et al, ). (Zhang, Lin, et al, ) found that biochar amendment increased the relative abundance of Bacteroidetes , but it is not possible to infer whether it was an absolute abundance increase in Bacteroidetes or a decrease in the abundance of other bacteria. To date, few studies have applied an internal standard gene to evaluate the variation of bacterial abundance and composition by high‐throughput sequencing.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous measurement of bacterial abundance and composition in response to biochar in soybean field soil using 16S rRNA gene sequencing

Liu

et al. 2017

Land Degrad Dev

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Biochar is an important soil conditioner. However, we have limited understanding of biochar effects on the microbial community traits of the rhizosphere and bulk soil in the field. The aim of this study was to examine the impacts of biochar amendment on microbial abundance and community in the rhizosphere and bulk soils in soybean‐growing fields. We applied 16S ribosomal RNA (rRNA) gene sequencing with an internal standard gene to quantitatively investigate biochar‐mediated changes in microbial composition and abundance in rhizosphere and bulk soils. The results indicated that the absolute abundance of bacterial taxa with internal standard can be more informative in describing soil microbial population distribution. A linear discriminant analysis effect size differential analysis showed that the biochar amendment significantly altered the soil microbial abundance and community composition. The bacteria in the rhizosphere soil showed more clear responses to biochar addition than the bacteria in the bulk soil. These results highlight the enhanced effect by biochar on bacterial population distribution in the rhizosphere. 16S rRNA gene sequencing with internal standard gene represents an effective method that can substantially improve 16S‐seq based microbiome studies by determining the 16S rRNA gene abundance and bacterial community composition simultaneously.

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“…The pH and electrical conductivity (EC) of soils were measured in a 1:2.5 (w/v) water extract. Soil total nitrogen (TN), total carbon (TC), organic matter (OM), ammonia nitrogen (NH 3 -N), nitrite nitrogen (NO 2 -N), available phosphate (AP), available potassium (AK), and available sulfur (AS) were determined according to the methodologies of Kim et al [58] and Zhang et al [59].…”

Section: Soil Physicochemical Analysismentioning

confidence: 99%

Soil bacterial communities associated with stony soils influence the tuber size of Tetrastigma hemsleyanum

Guo¹,

Hong²,

Zhang³

et al. 2020

Preprint

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Background Plants grown in stony soils have better-developed root systems and higher crop yields than those grown in non-stony soils. The roles of various physical and chemical effects of stony soils on plant growth have been published, but the roles of soil microbiota and rhizosphere microbiota have not been investigated. Methods Tetrastigma hemsleyanum plants were cultivated for two years in stony soils and in the same soil from which rock-fragments had been removed. The microbiome and the tuber transcriptome were analyzed, using multiple bioinformatics methods. Results The soil microbiota of these two soils were markedly different, and the stony soils contained high abundances of bacterial taxa belonging to the Actinobacteria, Rokubacteria, Rhizobiales, Desulfarculaceae, and Chthoniobacteraceae. These discriminatory taxa in soils may promote the tuber growth of T. hemsleyanum, through releasing nutrients from rocks and colonizing the rhizosphere and tuber surface of T. hemsleyanum. In addition, stony soils induced a dramatic change in the tuber’s transcriptome, particularly with respect to the pathways of phytohormone biosynthesis, photosynthesis, and biotic stress resistance, expression levels of which showed strong correlations with the aforementioned bacterial taxa. Conclusions These results indicated that beneficial effects of stony soils on plant growth may be closely correlated with their specific microbiota, which can, in turn, influence multiple biological processes of host. This is the first study to reveal the role of stony soils-driven microbiota in tuber growth, and stony soils can represent a microbial repository for the screening of microbial isolates to increase plant yield.

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Tobacco bacterial wilt suppression with biochar soil addition associates to improved soil physiochemical properties and increased rhizosphere bacteria abundance

Cited by 120 publications

References 35 publications

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Response of Bacterial Community Structure to Different Biochar Addition Dosages in Karst Yellow Soil Planted with Ryegrass and Daylily

Simultaneous measurement of bacterial abundance and composition in response to biochar in soybean field soil using 16S rRNA gene sequencing

Soil bacterial communities associated with stony soils influence the tuber size of Tetrastigma hemsleyanum

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