Root Growth Dynamics, Dominant Rhizosphere Bacteria, and Correlation Between Dominant Bacterial Genera and Root Traits Through Brassica napus Development

Taye, Zelalem M.; Noble, Kalli; Siciliano, Steven D.; Helgason, Bobbi L.; Lamb, Eric G.

doi:10.1007/s11104-022-05296-6

Cited by 5 publications

(7 citation statements)

References 43 publications

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“…A study by Noel et al (1996) shows that Rhizobium leguminosarum's symbiotic interaction with Brassica napus significantly enhances root length. Taye et al (2022) confirmed the positive influence of R. leguminosarum on root architecture, plant health, and productivity of B. napus. Despite the importance of B. juncea root architecture, root growth dynamics and the relationship between root system architecture and microbecadmium interactions are still unknown.…”

Section: Introductionsupporting

confidence: 56%

“…Thus, R. leguminosarum might provide favorable conditions for root growth and development. A study conducted by Taye et al (2022) found that the length and diameter of roots of Brassica napus plants grown in Cdcontaminated soil in the presence of R. leguminosarum increased until the flowering stage, then started to decrease until the plants reached maturity. In our study, significant changes in root length and diameter were not observed at the early stage of growth (i.e., at the 30th day), but were noted at the maturity stage (i.e., at the 60th day) (see Figures 2I, J).…”

Section: Discussionmentioning

confidence: 99%

“…This confirms that the Brassicaceae family shows no changes in growth in response to Cd stress until the flowering stage, after which root growth becomes stunted (see Figure 1B). Nguyen (2009) and Taye et al (2022) reported that the abundance of bacteria present has a positive correlation with root length. This might be attributable to causal symbiotic relationships between plants and bacteria.…”

Section: Discussionmentioning

confidence: 99%

“…Various plants and crops cannot survive under Cd stress; for this reason, scientists are working to develop biological approaches that can effectively overcome Cd toxicity, including intercropping, bioremediation using microbes, and soil amendments using biochar ( Tang et al., 2020 ; Houssou et al., 2022 ; Taye et al., 2022 ). Intercropping is a method of cultivation of two or more crop species in the same field, and it can enhance plant productivity and biodiversity and provide biocontrol against pests and pathogens.…”

Section: Introductionmentioning

confidence: 99%

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An integrated remediation approach using combinations of biochar, Rhizobium leguminosarum, and Vigna radiata for immobilizing and dissipating cadmium contaminants from the soil–mustard plant system

Hira

Mahboob²,

Azhar³

et al. 2023

Front. Plant Sci.

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Cadmium (Cd) contamination of soils is an environmental concern, as cadmium harms food crops and can therefore impact human health. The use of combinations of biochar (seeded with Rhizobium leguminosarum) and Vigna radiata (as an intercrop) has the potential to reduce the mobilization of Cd from soil via mustard plants (Brassica juncea). Mustard plants are grown as a food and oil production crop that is consumed worldwide. However, this plant has the property of hyperaccumulation; thus, it bioaccumulates Cd in its tissues, which in turn, if eaten, can become part of the human food chain. Hence, reducing Cd bioaccumulation in mustard plants is crucial to making these plants a reliable and safe source of food for consumption. To improve soil sorption capacity and immobilization efficiency, biochar (in the form of wheat husk) was mixed with R. leguminosarum and intercropped (using V. radiata) with mustard plants for further investigation. Sampling was performed at an early growth stage (i.e., at 30 days) and at maturity (i.e., at 60 days) to determine the impact of Cd on a plant’s morphophysiological attributes. Data were analyzed in two ways: first by analysis of variance (ANOVA) and then by the post hoc Tukey’s honestly significant difference (HSD) test. The statistical analysis concluded that combinations effectively improved plant traits by 65%–90% in the early growth stage and by 70%–90% in the maturity stage. The T6 treatment combination [i.e., biochar + R. leguminosarum + V. radiata (BC + RL + VR)] provided the most effective results in terms of growth, biomass, pod yield, and pigmentation content. In addition, this combination reduced the translocation of Cd in mustard plants by 70%–95%. The combination of BC + RL + VR effectively reduced Cd contamination of mustard tissue and provided a suitable growing environment for the plants. A post-harvesting soil analysis using X-ray diffraction (XRD) found that Cd was undetectable in soil. This provides clear confirmation that these approaches can lead to Cd soil remediation. Moreover, this study provided insight into the responses of different morphophysiological attributes of mustard plants to Cd stress and could aid in developing Cd stress tolerance in mustard plants.

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Section: Introductionsupporting

confidence: 56%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An integrated remediation approach using combinations of biochar, Rhizobium leguminosarum, and Vigna radiata for immobilizing and dissipating cadmium contaminants from the soil–mustard plant system

Hira

Mahboob²,

Azhar³

et al. 2023

Front. Plant Sci.

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“…Relationship of the speci c fungal taxa and B. napus yield Fungal taxa highly associated with B. napus yield were largely different among three growth stages (i.e., weeks 3, 6, and 9), indicating the temporal change of the relative abundance of the recruited taxa by the plant during its growth and development. The association of bacterial taxa or community composition with B. napus traits (i.e., yield and root) from the same eld experiment was also impacted by growth stage (Mamet et al 2021;Taye et al 2022). Indeed, their function at a speci c growth stage might affect plant physiology and development, which ultimately in uences B. napus yield (Kumar and Bais 2012).…”

Section: Correlation Of B Napus Phylogeny and Fungal Communitymentioning

confidence: 97%

From plant genetics to environment of selection: exploring the drivers of fungal communities in the roots and rhizosphere of Brassica napus

Bazghaleh¹,

Li²,

Vail³

et al. 2022

Preprint

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PurposeOur aim was to characterize the fungal root and rhizosphere microbiomes of genetically diverse Brassica napus lines in a temporally-intensive, multi-site field study to assess the relative contributions of plant genetics, growth stage and environmental conditions to microbiome composition and to identify fungi that were associated with yield performance. MethodsSixteen B. napus lines were grown across three sites in the Canadian Prairies. Sixteen lines were sampled weekly for ten weeks at one site in 2016, as well as a subset of eight lines at the same site in 2017; the sixteen lines were sampled three times at three sites in 2017. The root and rhizosphere fungal microbiomes were assessed using amplicon sequencing of the fungal ITS region with the Illumina MiSeq. ResultsOverall, B. napus line was associated with only 2% of the variation in community structure. Constrained to within a single site-year, this association increased to between 4 and 16% and to between 25 and 37% in a single week within individual sites. The fungal core microbiome consisted of 38 ASVs; Olpidium, Fusicola, Fusarium, Gibberella, Mortierella, and Cutaneotrichosporon were the most abundant taxa with varied abundance during different B. napus growth stages. Thirteen ASVs across three growth stages were highly associated with B. napus yield. ConclusionOur results point to the potential to exploit the B. napus microbiome for improving plant performance by targeting the core taxa identified here as well as those that lead to greater fitness under more specific conditions.

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Sampling period and disease severity of bacterial wilt significantly affected the bacterial community structure and functional prediction in the sesame rhizosphere soil

Wang

et al. 2023

Rhizosphere

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Root Growth Dynamics, Dominant Rhizosphere Bacteria, and Correlation Between Dominant Bacterial Genera and Root Traits Through Brassica napus Development

Cited by 5 publications

References 43 publications

An integrated remediation approach using combinations of biochar, Rhizobium leguminosarum, and Vigna radiata for immobilizing and dissipating cadmium contaminants from the soil–mustard plant system

An integrated remediation approach using combinations of biochar, Rhizobium leguminosarum, and Vigna radiata for immobilizing and dissipating cadmium contaminants from the soil–mustard plant system

From plant genetics to environment of selection: exploring the drivers of fungal communities in the roots and rhizosphere of Brassica napus

Sampling period and disease severity of bacterial wilt significantly affected the bacterial community structure and functional prediction in the sesame rhizosphere soil

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