Response of the microbial community associated with sweet potato (Ipomoea batatas) to Bacillus safensis and Bacillus velezensis strains

Mateus, Jackeline Rossetti; Marques, Joana Montezano; Dal’Rio, Isabella; Vollú, Renata Estebanez; Coelho, Márcia Reed Rodrigues; Seldin, Lucy

doi:10.1007/s10482-018-1181-y

Cited by 15 publications

(12 citation statements)

References 41 publications

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“…Morphological adaptations make use of the developmental plasticity of plants via changing cell or tissue shape and size, and physiological acclimation involves increased water uptake and decreased water loss, while cellular adjustment applies to enhance osmoprotection, antioxidative capacity and desiccation tolerance [10,11,12]. In recent years, various studies have emerged implicating the root external environment (rhizosphere) also to be involved in a wide range of stress tolerances in plants, including high salinity, drought and pathogen infection, which provides a novel direction in future improvement of stress tolerance of peanuts via modifying the soil microbial community [13,14,15,16]. However, studies of the peanut rhizosphere are scarce.…”

Section: Introductionmentioning

confidence: 99%

Effect of Drought Stress and Developmental Stages on Microbial Community Structure and Diversity in Peanut Rhizosphere Soil

Dai

Zhang

et al. 2019

IJMS

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Background: Peanut (Arachis hypogaea L.), an important oilseed and food legume, is widely cultivated in the semi-arid tropics. Drought is the major stress in this region which limits productivity. Microbial communities in the rhizosphere are of special importance to stress tolerance. However, relatively little is known about the relationship between drought and microbial communities in peanuts. Method: In this study, deep sequencing of the V3-V4 region of the 16S rRNA gene was performed to characterize the microbial community structure of drought-treated and untreated peanuts. Results: Taxonomic analysis showed that Actinobacteria, Proteobacteria, Saccharibacteria, Chloroflexi, Acidobacteria and Cyanobacteria were the dominant phyla in the peanut rhizosphere. Comparisons of microbial community structure of peanuts revealed that the relative abundance of Actinobacteria and Acidobacteria dramatically increased in the seedling and podding stages in drought-treated soil, while that of Cyanobacteria and Gemmatimonadetes increased in the flowering stage in drought-treated rhizospheres. Metagenomic profiling indicated that sequences related to metabolism, signaling transduction, defense mechanism and basic vital activity were enriched in the drought-treated rhizosphere, which may have implications for plant survival and drought tolerance. Conclusion: This microbial communities study will form the foundation for future improvement of drought tolerance of peanuts via modification of the soil microbes.

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Section: Introductionmentioning

confidence: 99%

Effect of Drought Stress and Developmental Stages on Microbial Community Structure and Diversity in Peanut Rhizosphere Soil

Dai

Zhang

et al. 2019

IJMS

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“…of the Family Convolvulaceae is a major food crop cultivated worldwide and widely used. It is a high yield and e ciency crop, resistant to drought and barrenness, and has strong adaptability [1][2][3]. In addition, sweet potato is rich in nutrients and has cancer preventing properties, so it become more and more popular [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Continuous Cropping on Bacterial Community Structure in Rhizospheric Soil of Sweet Potato

Gao

Han

et al. 2020

Preprint

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Background: Continuous cropping obstacles from sweet potato are widespread, which seriously reduce the yield and quality, restrict the sustainable development of sweet potato industry. Bacteria are the most abundant in rhizospheric soil and have a certain relationship with continuous cropping obstacles. However, there are few reports on how continuous cropping affected the bacterial community structure in the rhizospheric soil of sweet potato. In this study, high-throughput sequencing technique was used to explore the changes of rhizospheric soil bacterial community structure of different sweet potato varieties, and the correlation between soil characteristics and this bacterial community after continuous cropping, so as to provide a theoretical basis for the prevention and control of sweet potato continuous cropping obstacles.Results: After two years of continuous cropping, the results showed that (1) the dominant bacteria phlya in rhizospheric soils from both Xushu18 and Yizi138 were Proteobacteria, Acidobacteria, and Actinobacteria. The most dominant genus was Subgroup 6_norank. Significant changes in the relative abundance of rhizospheric soil bacteria were observed for two sweet potato varieties. (2) Bacterial richness and diversity indexes of rhizospheric soil from Xushu18 were higher than those from Yizi138 after continuous cropping. Moreover, the beneficial Lysobacter and Bacillus were more prevalent in Xushu18, but Yizi138 contained more harmful Gemmatimonadetes. (3) Soil pH decreased after continuous cropping, and redundancy analysis showed that soil pH was significantly correlated with bacterial community. Spearman’s rank correlations coefficients analysis demonstrated that pH was positively correlated with Planctomycetes and Acidobacteria, and negatively correlated with Actinobacteria and Firmicutes.Conclusions: After continuous cropping of sweet potato, the bacterial community structure and physicochemical properties in the rhizospheric soil were unbalanced, and the changes of different sweet potato varieties were different. The contents of Lysobacter and Bacillus were higher in the sweet potato variety resistant to continuous cropping. It provides a basis for the development of special microbial fertilizer for sweet potatoes to alleviate continuous cropping obstacle.

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“…In the soil, PGPR inoculants have been reported to participate in nutrient cycling and increase crop productivity (Singh et al, 2011). Bacillus velezensis is widely reported to be in the soil and plants as an essential plant rhizosphere-promoting bacteria (Mateus et al, 2019;Rabbee et al, 2019). B. velezensis can produce volatile organic compounds (VOCs), iturin, fengycin, surfactin, and antibiotics, among others, to inhibit fungal growth (Jin et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Cell-Free Fermentation Broth of Bacillus velezensis Strain S3-1 Improves Pak Choi Nutritional Quality and Changes the Bacterial Community Structure of the Rhizosphere Soil

Jin

Lin

et al. 2020

Front. Microbiol.

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Bacillus velezensis is a plant growth-promoting rhizobacteria (PGPR) that has long been proven to improve the growth of plants, and it has been widely used in agriculture. However, in many reports, we observed that during the application of bacterial fluids, it appeared that the effect of the cell-free fermentation broth (CFB) was ignored. The purpose of this study is to compare the effect of the no inoculation treatment (CK), the B. velezensis strain S3-1 treatment (S), the CFB treatment in the Pak choi, soil bacterial community structure, soil enzyme activity, and field soil properties. The results have shown that, compared to the inoculation B. velezensis strain S3-1 treatment and the no-inoculation treatment; the inoculation of the CFB treatment can significantly enhance the soluble protein, soluble solids, ascorbic acid of Pak choi and increase the total phosphorus content and electrical conductivity (EC) in the soil. Based on high-throughput sequencing data, our analysis of soil microbial communities used R, NETWORK, and PICRUSt showed that the CFB treatment can enhance the relative abundance of Acidobacteria in the soil, decrease the abundance of native Bacillus in the soil, change the microbial community structure of the top 50 operational taxonomic units (OTUs), and improve soil microbial carbon metabolism and nitrogen metabolism. Overall, we observed that CFB treatment can also improve plant nutrition and change soil microbial communities. This study provides new insights for the application of microbial fertilizers in agricultural production.

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Response of the microbial community associated with sweet potato (Ipomoea batatas) to Bacillus safensis and Bacillus velezensis strains

Cited by 15 publications

References 41 publications

Effect of Drought Stress and Developmental Stages on Microbial Community Structure and Diversity in Peanut Rhizosphere Soil

Effect of Drought Stress and Developmental Stages on Microbial Community Structure and Diversity in Peanut Rhizosphere Soil

Effects of Continuous Cropping on Bacterial Community Structure in Rhizospheric Soil of Sweet Potato

Cell-Free Fermentation Broth of Bacillus velezensis Strain S3-1 Improves Pak Choi Nutritional Quality and Changes the Bacterial Community Structure of the Rhizosphere Soil

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