Harnessing plant-bacteria-fungi interactions to improve plant growth and degradation of organic pollutants

Jambon, Inge; Thijs, Sofie; Weyens, Nele; Vangronsveld, Jaco

doi:10.1080/17429145.2018.1441450

Cited by 70 publications

(19 citation statements)

References 132 publications

(172 reference statements)

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“…They interact with each other via diverse mechanisms ranging from trophic interactions to biofilm formation and even the interchange of genetic information, to name just a few [1,2]. These interactions are receiving increasing attention as we understand more about how the roles of fungi and bacteria as decomposers, nitrogen fixers, pathogens, and mutualistic partners of plants and animals are modified by fungus-bacterium interactions [3][4][5][6][7][8].…”

Section: Microbial Ecology Of Floral Nectarmentioning

confidence: 99%

Yeast–Bacterium Interactions: The Next Frontier in Nectar Research

Álvarez‐Pérez

Lievens

Fukami

2019

Trends in Plant Science

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Beyond its role as reward for pollinators, floral nectar also provides habitat for specialized and opportunistic yeasts and bacteria. These microbes modify nectar chemistry, often altering mutualistic relationships between plants and pollinators in ways that we are only beginning to understand. Many studies on this multi-partite system have focused on either yeasts or bacteria without consideration of yeast-bacterium interactions, but recent evidence suggests that such interactions drive the assembly of nectar microbial communities and its consequences for pollination. Unexplored potential mechanisms of yeast-bacterium interactions include the formation of physical complexes, nutritional interactions, antibiosis, signaling-based interactions, and horizontal gene transfer. We argue that studying these mechanisms can elucidate how nectar microbial communities are established and affect plant fitness via pollinators.

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Section: Microbial Ecology Of Floral Nectarmentioning

confidence: 99%

Yeast–Bacterium Interactions: The Next Frontier in Nectar Research

Álvarez‐Pérez

Lievens

Fukami

2019

Trends in Plant Science

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“…Plant-root associated microbes have been identified as major contributors to plant survival and health [1], as they can increase growth through a myriad of functions like the secretion of compounds such as phytohormones, organic acids, and antibiotics, thus improving access to nutrition and resistance to pathogens [2][3][4][5]. Moreover, in polluted environments, microorganisms can alleviate soil toxicity by reducing contaminant levels and/or bioavailability [6,7].…”

Section: Introductionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungal Assemblages Significantly Shifted upon Bacterial Inoculation in Non-Contaminated and Petroleum-Contaminated Environments

Dagher

Providencia²,

Pitre

et al. 2020

Microorganisms

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Arbuscular mycorrhizal fungi (AMF) have been shown to reduce plant stress and improve their health and growth, making them important components of the plant-root associated microbiome, especially in stressful conditions such as petroleum hydrocarbons (PHs) contaminated environments. Purposely manipulating the root-associated AMF assemblages in order to improve plant health and modulate their interaction with the rhizosphere microbes could lead to increased agricultural crop yields and phytoremediation performance by the host plant and its root-associated microbiota. In this study, we tested whether repeated inoculations with a Proteobacteria consortium influenced plant productivity and the AMF assemblages associated with the root and rhizosphere of four plant species growing either in non-contaminated natural soil or in sediments contaminated with petroleum hydrocarbons. A mesocosm experiment was performed in a randomized complete block design in four blocks with two factors: (1) substrate contamination (contaminated or not contaminated), and (2) inoculation (or not) with a bacterial consortium composed of ten isolates of Proteobacteria. Plants were grown in a greenhouse over four months, after which the effect of treatments on plant biomass and petroleum hydrocarbon concentrations in the substrate were determined. MiSeq amplicon sequencing, targeting the 18S rRNA gene, was used to assess AMF community structures in the roots and rhizosphere of plants growing in both contaminated and non-contaminated substrates. We also investigated the contribution of plant identity and biotope (plant roots and rhizospheric soil) in shaping the associated AMF assemblages. Our results showed that while inoculation caused a significant shift in AMF communities, the substrate contamination had a much stronger influence on their structure, followed by the biotope and plant identity to a lesser extent. Moreover, inoculation significantly increased plant biomass production and was associated with a decreased petroleum hydrocarbons dissipation in the contaminated soil. The outcome of this study provides knowledge on the factors influencing the diversity and community structure of AMF associated with indigenous plants following repeated inoculation of a bacterial consortium. It highlights the dominance of soil chemical properties, such as petroleum hydrocarbon presence, over biotic factors and inputs, such as plant species and microbial inoculations, in determining the plant-associated arbuscular mycorrhizal fungi communities.

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“…It may be due to the combined effect of both plant and hydrocarbon bacteria. It has been reported that in the presence of the microorganism, plants get enough support in severe conditions and can perform better organic pollutant degradation [33,34]. It has also been noted that the root exudates secreted by the plant, boost up the growth and activity of rhizosphere bacterial communities [35].…”

Section: Hydrocarbons Degradationmentioning

confidence: 99%

Cyperus laevigatus L. Enhances Diesel Oil Remediation in Synergism with Bacterial Inoculation in Floating Treatment Wetlands

et al. 2020

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Diesel oil is considered a very hazardous fuel due to its adverse effect on the aquatic ecosystem, so its remediation has become the focus of much attention. Taking this into consideration, the current study was conducted to explore the synergistic applications of both plant and bacteria for cleaning up of diesel oil contaminated water. We examined that the application of floating treatment wetlands (FTWs) is an economical and superlative choice for the treatment of diesel oil contaminated water. In this study, a pilot scale floating treatment wetlands system having diesel oil contaminated water (1% w/v), was adopted using Cyperus laevigatus L and a mixture of hydrocarbons degrading bacterial strains; viz., Acinetobacter sp.61KJ620863, Bacillus megaterium 65 KF478214, and Acinetobacter sp.82 KF478231. It was observed that consortium of hydrocarbons degrading bacteria improved the remediation of diesel oil in combination with Cyperus laevigatus L. Moreover, the performance of the FTWs was enhanced by colonization of bacterial strains in the root and shoot of Cyperus laevigatus L. Independently, the bacterial consortium and Cyperus laevigatus L exhibited 37.46% and 56.57% reduction in diesel oil, respectively, while 73.48% reduction in hydrocarbons was exhibited by the joint application of both plant and bacteria in FTWs. Furthermore, microbial inoculation improved the fresh biomass (11.62%), dry biomass (33.33%), and height (18.05%) of plants. Fish toxicity assay evaluated the effectiveness of FTWs by showing the extent of improvement in the water quality to a level that became safe for living organisms. The study therefore concluded that Cyperus laevigatus L augmented with hydrocarbons degrading bacterial consortium exhibited a remarkable ability to decontaminate the diesel oil from water and could enhance the FTWs performance.

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Harnessing plant-bacteria-fungi interactions to improve plant growth and degradation of organic pollutants

Cited by 70 publications

References 132 publications

Yeast–Bacterium Interactions: The Next Frontier in Nectar Research

Yeast–Bacterium Interactions: The Next Frontier in Nectar Research

Arbuscular Mycorrhizal Fungal Assemblages Significantly Shifted upon Bacterial Inoculation in Non-Contaminated and Petroleum-Contaminated Environments

Cyperus laevigatus L. Enhances Diesel Oil Remediation in Synergism with Bacterial Inoculation in Floating Treatment Wetlands

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