Bacterial community associated with rhizosphere of maize and cowpea in a subsequent cultivation

Araújo, Ademir Sérgio Ferreira de; Miranda, Ana Roberta Lima; Sousa, Ricardo Silva de; Mendes, Lucas William; Antunes, Jadson Emanuel Lopes; Oliveira, Louise Melo de Souza; Araújo, Fábio Fernando de; Melo, Vânia Maria Maciel; Figueiredo, Márcia do Vale Barreto

doi:10.1016/j.apsoil.2019.05.019

Cited by 38 publications

(11 citation statements)

References 58 publications

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“…Several studies have worked on the bacterial community associated with maize plant (roots, stems, flower and leaves) and the endosphere with fascinating reports on the importance of the rhizosphere and endo-rhizosphere organisms in sustaining agroecosystem [ 25 , 26 , 27 ]. To ensure the colonization of these important soil organisms, maize roots release a variety of important carbon-containing rhizodeposits, such as exudates, border cells, mucilage and nutrients that makes the rhizosphere of maize selective and nutritive than the surrounding soils.…”

Section: Introductionmentioning

confidence: 99%

Metagenomic Insight into the Community Structure of Maize-Rhizosphere Bacteria as Predicted by Different Environmental Factors and Their Functioning within Plant Proximity

Akinola

Babalola

2021

Microorganisms

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The rhizosphere microbiota contributes immensely to nutrient sequestration, productivity and plant growth. Several studies have suggested that environmental factors and high nutrient composition of plant’s rhizosphere influence the structural diversity of proximal microorganisms. To verify this assertion, we compare the functional diversity of bacteria in maize rhizosphere and bulk soils using shotgun metagenomics and assess the influence of measured environmental variables on bacterial diversity. Our study showed that the bacterial community associated with each sampling site was distinct, with high community members shared among the samples. The bacterial community was dominated by Proteobacteria, Actinobacteria, Acidobacteria, Gemmatimonadetes, Bacteroidetes and Verrucomicrobia. In comparison, genera such as Gemmatimonas, Streptomyces, Conexibacter, Burkholderia, Bacillus, Gemmata, Mesorhizobium, Pseudomonas and Micromonospora were significantly (p ≤ 0.05) high in the rhizosphere soils compared to bulk soils. Diversity indices showed that the bacterial composition was significantly different across the sites. The forward selection of environmental factors predicted N-NO3 (p = 0.019) as the most influential factor controlling the variation in the bacterial community structure, while other factors such as pH (p = 1.00) and sulfate (p = 0.50) contributed insignificantly to the community structure of bacteria. Functional assessment of the sampling sites, considering important pathways viz. nitrogen metabolism, phosphorus metabolism, stress responses, and iron acquisition and metabolism could be represented as Ls > Rs > Rc > Lc. This revealed that functional hits are higher in the rhizosphere soil than their controls. Taken together, inference from this study shows that the sampling sites are hotspots for biotechnologically important microorganisms.

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Section: Introductionmentioning

confidence: 99%

Metagenomic Insight into the Community Structure of Maize-Rhizosphere Bacteria as Predicted by Different Environmental Factors and Their Functioning within Plant Proximity

Akinola

Babalola

2021

Microorganisms

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“…It is not anticipated that harvesting a crop for forage, either by grazing or mowing, will significantly alter the composition or activity of the soil microbial community relative to harvesting the crop for grain at maturity. This is supported by studies that have shown significant developmental stage differences in community structure, with host plant effects on microbial community structure greatest at early growth stages, while previous management practices exert a greater influence later in the season (Collins, Rasmussen, & Douglas, 1992; de Araujo et al., 2019; Weisskopf et al., 2008). This is consistent with other studies that indicated plant species and management are the predominant drivers of changes in microbial community structure and function (Drijber, Doran, Parkhurst, & Lyon, 2000; Finney et al., 2017; Leff et al., 2015; Reardon & Wuest, 2016; Romdhane et al., 2019).…”

Section: Rotation Effects Of Annual Crops In Dryland Wheat Systemsmentioning

confidence: 83%

“…Both SOM content and fungal abundance are sensitive to disturbances such as tillage (Friberg, Persson, Jensen, & Bergkvist, 2019; Kaurin et al., 2018; Sommermann et al., 2018), which generally is more frequent in annual as compared to perennial systems. There are few studies focused on microbial communities in annual forages, but numerous studies have characterized the microbial communities associated with wheat (Acosta‐Martínez, et al., 2007; Fan, Weisenhorn, Gilbert, & Chu, 2018; Friberg et al., 2019; Weisskopf et al., 2008), barley (Angers, Bissonnette, Kegere, & Samson, 1993; Bulgarelli et al., 2015; Robertson‐Albertyn et al., 2017; Timmusk et al., 2011), rye ( Secale cereale L.) (Finney, Buyer, & Kaye, 2017; Lundquist, Jackson, Scow, & Hsu, 1999; Martínez‐García, Korthals, Brussaard, Jørgensen, & De Deyn, 2018), and pea (de Araujo et al., 2019; Nayyar et al., 2009; Wamberg, Christensen, Jakobsen, Müller, & Sørensen, 2003).…”

Section: Rotation Effects Of Annual Crops In Dryland Wheat Systemsmentioning

confidence: 99%

Annual forage impacts on dryland wheat farming in the Great Plains

et al. 2021

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Wheat (Triticum spp.) dominates dryland grain crop production in the North American Great Plains and other regions with semi‐arid steppe climates. A common practice is to alternate winter or spring wheat with a 14‐ to 21‐mo fallow period to allow for soil‐water recharge, despite economic inefficiencies and environmental degradation. Replacing fallow with non‐cereal grain and seed crops often reduces future wheat yields due to increased water stress during grain fill. The use of annual forages may not have the disadvantages associated with grain and seed crops. The objective of this review was to determine benefits and challenges of incorporating annual forages into dryland wheat systems in semi‐arid steppe climates, using the Great Plains within the United States as a model system. Results indicate that: (a) cool‐ and warm‐season, annual grass and broadleaf species can be grown for forage across the region; (b) forage production will be less risky than grain and seed crop production under predicted climate‐change scenarios; (c) grazing annual forages may offer advantages (e.g., nutrient cycling, improved soil structure, added revenue from livestock) over mechanically harvesting annual forages; (d) the lack of infrastructure and local markets impede the use of annual forages to diversify wheat‐based cropping systems in the region; and (e) limited networking among researchers hinders the advancement in knowledge on how annual forages can be used to improve dryland wheat system resilience.

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“…The main finding of the present study was that cattle manure deposition treatment increased relative abundance of bacteria known to be beneficial. Rhizosphere beneficial bacteria taxa are important links between plants and soil, not only reflecting soil nutrient status but also affecting plant growth ( De Araujo et al, 2019 ). Proteobacteri, Bacteroidetes, and Firmicutes were present in maize, barley, cotton, and wheat rhizosphere ( Peiffer et al, 2013 ; Guo Z. et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Transfer of Nitrogen and Phosphorus From Cattle Manure to Soil and Oats Under Simulative Cattle Manure Deposition

Zhao

et al. 2022

Front. Microbiol.

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Simulated cattle manure deposition was used to estimate nutrient transfer to soil and oats and to investigate changes in microbial community composition and functional groups in oat rhizospheres. Nutrient absorption and return efficiency were calculated as a series of standard calculation formulas, and total nutrient transfer efficiency was nutrient absorption efficiency plus nutrient return efficiency. In total, 74.83% of nitrogen (N) and 59.30% of phosphorus (P) in cattle manure were transferred to soil and oats, with 11.79% of N and 7.89% of P in cattle manure absorbed by oats, and the remainder sequestered in the soil for 80 days after sowing. Cattle manure increased oat root length, surface, and volume under 0.2 mm diameter, and improved relative abundance of the microbiome known to be beneficial. In response to cattle manure, several bacteria known to be beneficial, such as Proteobacteria, Bacteroidota, and Firmicutes at phyla the level and Pseudoxanthomonas, Pseudomonas, and Sphingomonas at the genus level, were positively related to oat biomass and nutrient accumulation. For fungal communities, the relative abundance of Ascomycota is the predominant phylum, which varied in a larger range in the control treatment (81.0–63.3%) than the cattle manure deposition treatment (37.0–42.9%) as plant growing days extend. The relevant abundance of Basidiomycota known as decomposer was higher in cattle manure deposition treatment compared to that in control treatment at 15 days after sowing. More importantly, cattle manure deposition inhibited trophic mode within pathotroph like Alternaria and Fusarium fungal genus and promoted saprotroph and symbiotroph.

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Bacterial community associated with rhizosphere of maize and cowpea in a subsequent cultivation

Cited by 38 publications

References 58 publications

Metagenomic Insight into the Community Structure of Maize-Rhizosphere Bacteria as Predicted by Different Environmental Factors and Their Functioning within Plant Proximity

Metagenomic Insight into the Community Structure of Maize-Rhizosphere Bacteria as Predicted by Different Environmental Factors and Their Functioning within Plant Proximity

Annual forage impacts on dryland wheat farming in the Great Plains

Transfer of Nitrogen and Phosphorus From Cattle Manure to Soil and Oats Under Simulative Cattle Manure Deposition

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