Rhizosphere response to nickel in a facultative hyperaccumulator

Rosatto, Stefano; Roccotiello, Enrica; Piazza, Simone; Cecchi, Grazia; Greco, Giuseppe; Zotti, Mirca; Vezzulli, Luigi; Mariotti, Mauro

doi:10.1016/j.chemosphere.2019.05.193

Cited by 15 publications

(11 citation statements)

References 104 publications

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“…For example, plant growth promoting rhizobacteria (PGPR) regulate plant growth and metabolism through phytohormones [ 30 ]. Soil bacteria, such as Agrobacterium , Serratia , and Streptomyces produce indole-3-acetic acid (IAA), a phytohormone that directly influences plant growth [ 31 ]. Choi et al purified 2-azahypoxanthin (AHX) from fairy ring fungi ( Lepistasordida ) in turfgrass and found environmental stress and nitrogen absorption were improved by AHX[ 6 ].…”

Section: Discussionmentioning

confidence: 99%

Assessing soil microbes that drive fairy ring patterns in temperate semiarid grasslands

et al. 2022

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Background Fairy rings occur in diverse global biomes; however, there is a critical knowledge gap regarding drivers of fairy rings in grassland ecosystems. Grassland fairy rings are characterized belowground by an expanding mycelial front and aboveground by vigorous vegetation rings that develop concentrically with each growing season. We evaluated fairy ring dynamics in a field study conducted in semiarid grasslands to elucidate above- and belowground interactions driving distinct vegetation patterns. We followed this initial field investigation with a complementary greenhouse experiment, using soils collected from specific fairy ring zones (inside, ring-edge, outside) to examine plant-soil-microbial interactions under controlled conditions. We selected Leymus chinensis (a dominant grass) as our model plant species to assess the role of diverse fairy ring microbial communities on plant growth and nutrition. Results In our field study, plants on the ring-edge produced greater shoot biomass with higher concentrations of N and P, compared to plants inside the ring or adjacent (outside) controls. Soil microbial community biomarkers indicate shifts in relative microbial biomass as fairy rings expand. Inside the ring, plant roots showed greater damage from pathogenic fungi, compared to outside or ring-edge. Our greenhouse experiment confirmed that inoculation with live ring-edge soil generally promoted plant growth but decreased shoot P concentration. Inoculation with soil collected from inside the ring increased root pathogen infection and reduced shoot biomass. Conclusion We propose that soil microbial activity within ring-edges promotes plant growth via mobilization of plant-available P or directed stimulation. However, as the ring expands, L. chinensis at the leading edge may increase pathogen accumulation, resulting in reduced growth at the center of the ring in subsequent growing seasons. Our results provide new insights into the plant-soil-microbial dynamics of fairy rings in grasslands, helping to elucidate these mysterious vegetation patterns.

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Section: Discussionmentioning

confidence: 99%

Assessing soil microbes that drive fairy ring patterns in temperate semiarid grasslands

et al. 2022

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“…Recently, researchers have paid attention to the employment of microbial consortia of bacteria and fungi, which represent a more realistic simulation of environmental conditions [41,102]. These microorganisms, in fact, are well known (mainly in polluted soils) for their cooperation in environmental detoxification, plant growth promotion, and assisting phytoremediation [41,103]. However, as already mentioned, little is known about the application of microbial consortia of fungi and bacteria in marine sediment bioremediation [85,104].…”

Section: Fungi and Bacteria Involved In The Bioremediation Of Organic...mentioning

confidence: 99%

Port Sediments: Problem or Resource? A Review Concerning the Treatment and Decontamination of Port Sediments by Fungi and Bacteria

et al. 2021

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Contamination of marine sediments by organic and/or inorganic compounds represents one of the most critical problems in marine environments. This issue affects not only biodiversity but also ecosystems, with negative impacts on sea water quality. The scientific community and the European Commission have recently discussed marine environment and ecosystem protection and restoration by sustainable green technologies among the main objectives of their scientific programmes. One of the primary goals of sustainable restoration and remediation of contaminated marine sediments is research regarding new biotechnologies employable in the decontamination of marine sediments, to consider sediments as a resource in many fields such as industry. In this context, microorganisms—in particular, fungi and bacteria—play a central and crucial role as the best tools of sustainable and green remediation processes. This review, carried out in the framework of the Interreg IT-FR Maritime GEREMIA Project, collects and shows the bioremediation and mycoremediation studies carried out on marine sediments contaminated with ecotoxic metals and organic pollutants. This work evidences the potentialities and limiting factors of these biotechnologies and outlines the possible future scenarios of the bioremediation of marine sediments, and also highlights the opportunities of an integrated approach that involves fungi and bacteria together.

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“…Some Arthrobacter sp. strains are able to promote plant growth (1–4), enhance heavy metal phytoextraction (5–7), degrade organic and polyaromatic pollutants (8, 9), and restrain plant-pathogenic bacteria and fungi (1, 3, 10). Results from this present study have shown that Arthrobacter sp.…”

Section: Announcementmentioning

confidence: 99%

Genome Sequence of Arthrobacter sp. UKPF54-2, a Plant Growth-Promoting Rhizobacterial Strain Isolated from Paddy Soil

Shen

Gao

et al. 2019

Microbiol Resour Announc

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Rhizosphere response to nickel in a facultative hyperaccumulator

Cited by 15 publications

References 104 publications

Assessing soil microbes that drive fairy ring patterns in temperate semiarid grasslands

Assessing soil microbes that drive fairy ring patterns in temperate semiarid grasslands

Port Sediments: Problem or Resource? A Review Concerning the Treatment and Decontamination of Port Sediments by Fungi and Bacteria

Genome Sequence of Arthrobacter sp. UKPF54-2, a Plant Growth-Promoting Rhizobacterial Strain Isolated from Paddy Soil

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