Brevundimonas diminuta MYS6 associated Helianthus annuus L. for enhanced copper phytoremediation

Rathi, Manohari; Yogalakshmi, K.N.

doi:10.1016/j.chemosphere.2020.128195

Cited by 43 publications

(24 citation statements)

References 40 publications

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“…On the contrary, the total uptake of Cu by alfalfa was greatly increased in the inoculation treatment applied with EDDS. The improved phytoextraction performance of the inoculated plants can be attributed to the properties of the PGPR strains that promote plant growth and reduce metal stress (Hayat et al, 2010;Khan et al, 2020;Abbaszadeh-Dahaji et al, 2021;Rathi and Yogalakshmi, 2021). Moreover, the phytoextraction efficiency of Cu was maximized after the co-inoculation of two PGPRs, which can be confirmed by the highest total uptake of Cu in the ESRP treatment.…”

Section: Discussionmentioning

confidence: 78%

Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria

Duan

Liu

et al. 2022

Chemosphere

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Section: Discussionmentioning

confidence: 78%

Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria

Duan

Liu

et al. 2022

Chemosphere

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“…Li and Ramakrishna (2011) reported improved growth and copper uptake by maize (Zea mays) and sunflower (Helianthus annuus) under HM pollution in presence of copper resistant Pseudomonas strains exhibiting higher Zn and Pb bioaccumulation and plant growth promoting indole-3-acetic acid (IAA), iron chelating siderophore, and solubilization of mineral phosphate and metals ability. The use of copper-tolerant rhizobacteria Brevundimonas diminuta MYS6 and Pseudomonas vermicola to efficiently remove Cu improving plant growth, biomass and chlorophyll under Cu stress in sunflower (Rathi and Yogalakshmi, 2021) and lentils (Islam et al, 2016), respectively, has also been reported. Wu et al (2019) also isolated indigenous HM-resistant plant growth-promoting bacteria (PGPRs) genera Burkholderia, Paraburkholderia, Cupriavidus, Pseudomonas, and Ralstonia AMD-impacted farmlands in Le'an River basin, China.…”

Section: Hm Bioremediation and Plant Growth Promoting Activitymentioning

confidence: 99%

Microbial Community Diversity Dynamics in Acid Mine Drainage and Acid Mine Drainage-Polluted Soils: Implication on Mining Water Irrigation Agricultural Sustainability

Munyai

Ogola

Modise

2021

Front. Sustain. Food Syst.

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Environmental degradation related to mining-generated acid mine drainage (AMD) is a major global concern, contaminating surface and groundwater sources, including agricultural land. In the last two decades, many developing countries are expanding agricultural productivity in mine-impacted soils to meet food demand for their rapidly growing population. Further, the practice of AMD water (treated or untreated) irrigated agriculture is on the increase, particularly in water-stressed nations around the world. For sustainable agricultural production systems, optimal microbial diversity, and functioning is critical for soil health and plant productivity. Thus, this review presents up-to-date knowledge on the microbial structure and functional dynamics of AMD habitats and AMD-impacted agricultural soils. The long-term effects of AMD water such as soil acidification, heavy metals (HM), iron and sulfate pollution, greatly reduces microbial biomass, richness, and diversity, impairing soil health plant growth and productivity, and impacts food safety negatively. Despite these drawbacks, AMD-impacted habitats are unique ecological niches for novel acidophilic, HM, and sulfate-adapted microbial phylotypes that might be beneficial to optimal plant growth and productivity and bioremediation of polluted agricultural soils. This review has also highlighted the impact active and passive treatment technologies on AMD microbial diversity, further extending the discussion on the interrelated microbial diversity, and beneficial functions such as metal bioremediation, acidity neutralization, symbiotic rhizomicrobiome assembly, and plant growth promotion, sulfates/iron reduction, and biogeochemical N and C recycling under AMD-impacted environment. The significance of sulfur-reducing bacteria (SRB), iron-oxidizing bacteria (FeOB), and plant growth promoting rhizobacteria (PGPRs) as key players in many passive and active systems dedicated to bioremediation and microbe-assisted phytoremediation is also elucidated and discussed. Finally, new perspectives on the need for future studies, integrating meta-omics and process engineering on AMD-impacted microbiomes, key to designing and optimizing of robust active and passive bioremediation of AMD-water before application to agricultural production is proposed.

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“…The bacterial communities (Figure 4) were mainly constituted by the family Pseudomonadaceae (maximum value of 51% in the sample 1 R), followed by the families Caulobacteraceae (maximum value of 30% in the sample 6 R), Xanthomonadanceae (maxi-mum value of 18% in the sample 6 R) and Sphingomonadaceae (maximum value of 15% in the sample 3S). These bacteria are often correlated to hydrocarbon and metal contamination [49,50]. Considering the known PGPR strains [51] found in these communities and mainly related to Pb tolerance, the Pseudomonadaceae and Bacillaceae were isolated in the site and used for the inoculum.…”

Section: Ngs Analysis Resultsmentioning

confidence: 99%

Enhanced Lead Phytoextraction by Endophytes from Indigenous Plants

et al. 2021

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Lead (Pb) is one of the most common metal pollutants in soil, and phytoextraction is a sustainable and cost-effective way to remove it. The purpose of this work was to develop a phytoextraction strategy able to efficiently remove Pb from the soil of a decommissioned fuel depot located in Italy by the combined use of EDTA and endophytic bacteria isolated from indigenous plants. A total of 12 endophytic strains from three native species (Lotus cornicolatus, Sonchus tenerrimus, Bromus sterilis) were isolated and selected to prepare a microbial consortium used to inoculate microcosms of Brassica juncea and Helianthus annuus. As for B. juncea, experimental data showed that treatment with microbial inoculum alone was the most effective in improving Pb phytoextraction in shoots (up to 25 times more than the control). In H. annuus, on the other hand, the most effective treatment was the combined treatment (EDTA and inoculum) with up to three times more Pb uptake values. These results, also validated by the metagenomic analysis, confirm that plant-microbe interaction is a crucial key point in phytoremediation.

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Brevundimonas diminuta MYS6 associated Helianthus annuus L. for enhanced copper phytoremediation

Cited by 43 publications

References 40 publications

Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria

Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria

Microbial Community Diversity Dynamics in Acid Mine Drainage and Acid Mine Drainage-Polluted Soils: Implication on Mining Water Irrigation Agricultural Sustainability

Enhanced Lead Phytoextraction by Endophytes from Indigenous Plants

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