Diversity of endophytic bacteria in Lolium perenne and their potential to degrade petroleum hydrocarbons and promote plant growth

Kukla, Michał; Płociniczak, Tomasz; Piotrowska‐Seget, Zofia

doi:10.1016/j.chemosphere.2014.05.055

Cited by 94 publications

(52 citation statements)

References 43 publications

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“…strain BTRH79) in the rhizosphere of annual ryegrass was enhanced (Arslan et al 2014). Furthermore, contaminant type and levels have a large effect on the structure of the root bacterial communities, as plants growing on petroleum-contaminated soils reportedly recruit hydrocarbon-degrading bacteria (Kukla et al 2014). For example, Phillips et al (2009) found Altai wild rye selectively recruited and maintained hexadecane-degrading root endophytes during stressed conditions caused by an increase in total petroleum hydrocarbons.…”

Section: Hydrocarbon-degrading Genes Of Endophytic Bacteriamentioning

confidence: 99%

Endophytic root bacteria associated with the natural vegetation growing at the hydrocarbon-contaminated Bitumount Provincial Historic site

2017

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Abstract:The Bitumount Provincial Historic site is the location of 2 of the world's first oil-extracting and -refining operations. Despite hydrocarbon levels ranging from 330 to 24 700 mg·(kg soil) −1 , plants have been able to recolonize the site through means of natural revegetation. This study was designed to achieve a better understanding of the plant-root-associated bacterial partnerships occurring within naturally revegetated hydrocarboncontaminated soils. Root endophytic bacterial communities were characterized from representative plant species throughout the site by both high-throughput sequencing and culturing techniques. Population abundance of rhizosphere and root endosphere bacteria was significantly influenced (p < 0.05) by plant species and sampling location. In general, members of the Actinomycetales, Rhizobiales, Pseudomonadales, Burkholderiales, and Sphingomonadales orders were the most commonly identified orders. Community structure of root-associated bacteria was influenced by both plant species and sampling location. Quantitative real-time polymerase chain reaction was used to determine the potential functional diversity of the root endophytic bacteria. The gene copy numbers of 16S rRNA and 2 hydrocarbon-degrading genes (CYP153 and alkB) were significantly affected (p < 0.05) by the interaction of plant species and sampling location. Our findings suggest that some of the bacterial communities detected are known to exhibit plant growth promotion characteristics.Key words: reclamation-remediation, endophytic root bacteria, petroleum hydrocarbons, microbial community.

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Section: Hydrocarbon-degrading Genes Of Endophytic Bacteriamentioning

confidence: 99%

Endophytic root bacteria associated with the natural vegetation growing at the hydrocarbon-contaminated Bitumount Provincial Historic site

2017

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“…A survey of endophytic bacteria isolated from dune grasses collected from the Oregon Coast also found that that Pseudomonads were the most prevalent microorganism [29]. In addition, in a study of endophytic bacteria isolated from Lolium perenne plants growing in hydrocarbon contaminated soil, Pseudomonas, Bacillus and Curtobacterium were the most prevalent bacteria isolated [49]; and in poplar grown under field conditions, the most abundant genera among the isolated bacterial endophytes were Pseudomonas and Curtobacterium [72]. Furthermore we found that potentially pathogenic strains of bacteria were present in some of the grasses we collected along the Oregon Coast, such as Clavibacter michiganensis and members of the genus Xanthomonas.…”

Section: Resultsmentioning

confidence: 97%

“…In addition strains of ACC deaminase-producing Pseudomonas fluorescens and Pseudomonas putida were shown to improve growth and alleviate the effects of salt stress in canola [78]. Furthermore ACC- were isolated and shown to possess a variety of growth-promoting characteristics [49]. In addition an ACC-containing strain of Pseudomonas fluorescens stimulated plant growth and promoted heavy metal uptake in rape [41].…”

Section: Identification Of Isolates Displaying Acc Deaminase Activitymentioning

confidence: 99%

“…The presence of growth-promoting endophytes can also improve a plant's ability to adapt and grow in soils contaminated with organic compounds and heavy metals [41]- [49]. These bacteria can alleviate the toxic effects of these compounds through decomposition, by eliminating organic pollutants in soil, by their volatilization from the plant, or by the enhanced uptake and sequestration of heavy metals from soil.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, heavy metal-resistant bacterial endophytes isolated from the Cadmium-hyper accumulator Solanum nigrum L. found growing on mine tailings, these bacteria were found to improve growth and resistance to different heavy metals in test plants [45]. Endophytic bacteria were isolated from plants growing in hydrocarbon contaminated soils, these endophytes were shown to enhance growth and were capable of degrading a wide range of hydrocarbons [49] [64]. Additionally, endophytic nitrogen-fixing bacteria that were isolated from dune grasses growing along the Oregon coast may contribute to the growth and persistence of these grasses on nutrient-poor sand [29].…”

Section: Introductionmentioning

confidence: 99%

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Isolation and Identification of Bacterial Endophytes from Grasses along the Oregon Coast

Martin

Dombrowski

2017

AJPS

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Bacterial endophytes have been shown to improve abiotic and biotic stress responses in plants. Plants growing under harsh conditions along the Oregon Coast could contain bacterial endophytes that improve persistence and growth of grasses in this environment. Thirty-four plants consisting of eight different species were collected along the Oregon coast from four different sites. Bacterial endophytes were isolated from root crown, stem and leaf tissues. A portion of the 16S rRNA ITS regions of each isolate was amplified, sequenced, and used to perform a BLAST search against the nucleotide database collection at National Center for Biotechnology Information. One-hundred and thirty-three different bacterial isolates, ninety-four of which were unique, representing thirty-six different taxonomic groups were found. Over 50% of the total bacteria isolates were in just five taxonomic groups. Pseudomonads were the most predominant bacteria isolated, making up 20.3% of the total isolates, followed by Curtobacterium and Microbacterium, each at 8.2%, Bacillus at 7.5% and Xanthomomas at 6%. Forty-seven percent (17 of 36) of the taxonomic groups contained only a single isolate. Fourteen bacterial isolates from five taxonomic groups, nine of which were from the genus Pseudomonas, were found to have 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, an enzyme associated with improving plant growth under stress. These newly discovered bacterial endophytes will be a valuable biological resource to develop approaches to increase the yield and adaptability of grasses and other crops grown in diverse environments and to meet the challenges associated with an unpredictable climate.

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Microbe and Plant‐Assisted Remediation of Organic Xenobiotics

Pinto

Lopes

Dordio

et al. 2021

Handbook of Assisted and Amendment: Enhanced Sustainable Remediation Technology

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Diversity of endophytic bacteria in Lolium perenne and their potential to degrade petroleum hydrocarbons and promote plant growth

Cited by 94 publications

References 43 publications

Endophytic root bacteria associated with the natural vegetation growing at the hydrocarbon-contaminated Bitumount Provincial Historic site

Endophytic root bacteria associated with the natural vegetation growing at the hydrocarbon-contaminated Bitumount Provincial Historic site

Isolation and Identification of Bacterial Endophytes from Grasses along the Oregon Coast

Microbe and Plant‐Assisted Remediation of Organic Xenobiotics

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