Hydrocarbon contamination and plant species determine the phylogenetic and functional diversity of endophytic degrading bacteria

Oliveira, Vanessa; Gomes, Newton C. M.; Almeida, Adelaide; Silva, Artur M. S.; Simões, Mário M. Q.; Smalla, Kornelia; Cunha, Ângela

doi:10.1111/mec.12559

Cited by 60 publications

(43 citation statements)

References 63 publications

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“…A fitorremediação é ambientalmente aceita para a despoluição do solo e da água contaminados com compostos orgânicos e inorgânicos. Várias pesquisas, tanto no Brasil quanto em outros países, têm demonstrado a sua efetividade na descontaminação de ambientes (Madalão et al, 2012a, b;Oliveira et al, 2014;Mitter et al, 2013;Mitton et al, 2014).…”

Section: Methodsunclassified

O herbicida sulfentrazone interfere na biomassa microbiana e na atividade da microbiota do solo

Madalão¹,

Silva²,

Orlando³

et al. 2016

RCA

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Section: Methodsunclassified

O herbicida sulfentrazone interfere na biomassa microbiana e na atividade da microbiota do solo

Madalão¹,

Silva²,

Orlando³

et al. 2016

RCA

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“…Bacterial communities are known to shift in response to environmental variables (43)(44)(45). Such shifts may often correspond to competitive dynamics unfolding when certain bacteria are given access to ideal (or suboptimal) food, temperature, humidity, salinity, pH, etc.…”

Section: Discussionmentioning

confidence: 99%

Indoor-Biofilter Growth and Exposure to Airborne Chemicals Drive Similar Changes in Plant Root Bacterial Communities

Russell

Chau

et al. 2014

Appl Environ Microbiol

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Due to the long durations spent inside by many humans, indoor air quality has become a growing concern. Biofiltration has emerged as a potential mechanism to clean indoor air of harmful volatile organic compounds (VOCs), which are typically found at concentrations higher indoors than outdoors. Root-associated microbes are thought to drive the functioning of plant-based biofilters, or biowalls, converting VOCs into biomass, energy, and carbon dioxide, but little is known about the root microbial communities of such artificially grown plants, how or whether they differ from those of plants grown in soil, and whether any changes in composition are driven by VOCs. In this study, we investigated how bacterial communities on biofilter plant roots change over time and in response to VOC exposure. Through 16S rRNA amplicon sequencing, we compared root bacterial communities from soil-grown plants with those from two biowalls, while also comparing communities from roots exposed to clean versus VOC-laden air in a laboratory biofiltration system. The results showed differences in bacterial communities between soilgrown and biowall-grown plants and between bacterial communities from plant roots exposed to clean air and those from VOCexposed plant roots. Both biowall-grown and VOC-exposed roots harbored enriched levels of bacteria from the genus Hyphomicrobium. Given their known capacities to break down aromatic and halogenated compounds, we hypothesize that these bacteria are important VOC degraders. While different strains of Hyphomicrobium proliferated in the two studied biowalls and our lab experiment, strains were shared across plant species, suggesting that a wide range of ornamental houseplants harbor similar microbes of potential use in living biofilters.

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“…Nesse caso, a utilização de plantas remediadoras surge como alternativa para acelerar a degradação dos herbicidas. Várias pesquisas, tanto no Brasil quanto no exterior, têm demonstrado a efeciência dessa técnica em diversos ecossistemas contaminados com compostos orgânicos e inorgânicos (MADALÃO et al, 2012a, b;SANTOS et al, 2012;MITTER et al, 2013;OLIVEIRA et al, 2014;MITTON et al, 2014).…”

Section: Introductionunclassified

Fitorremediação de solo contaminado com sulfentrazone em função do tempo de cultivo de Canavalia ensiformis

Madalão

Pires

Nascimento

et al. 2016

AGRO@MBIENTE ON-LINE

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Resumo: A fitorremediação é uma alternativa para a descontaminação de áreas que receberam intensas aplicações de herbicidas. Determinar o período mínimo que as espécies devem permanecer remediando o solo é fundamental para a otimização das áreas a serem cultivadas sem riscos de carryover. Objetivouse com este trabalho avaliar o tempo de cultivo de Canavalia ensiformis em solos contaminados com o herbicida sulfentrazone, de modo que essa espécie remedie o solo em níveis satisfatórios. O experimento foi instalado em casa de vegetação, utilizando-se vasos de 10 dm 3 ; e conduzido no delineamento em blocos cazualizados, em esquema fatorial (5 x 2), com quatro repetições. Os fatores consistiram de cinco períodos de fitorremediação, ou seja, de tempos de cultivo da fitorremediadora (0, 25, 50, 75 e 100 dias após a semeadura) e dois níveis de sulfentrazone (com herbicida na dose de 400 g ha -1 e sem herbicida). A espécie bioindicadora foi a Pennisetum glaucum, cultivada por 42 DAS. Ao longo desse período foram avaliadas as seguintes variáveis: altura de plantas (cm); toxicidade visual (%), utilizando escala que varia de 0 a 100, para ausência de sintomas e morte da planta, respectivamente; e matéria seca da parte aérea (g). Com 75 dias de cultivo da espécie fitorremediadora, não houve diferença entre o solo que recebeu aplicação de herbicida e aquele sem aplicação para as variáveis toxicidade visual, altura e matéria seca da parte aérea da espécie bioindicadora. A C. ensiformis precisa ser cultivada por um período mínimo de 75 dias para descontaminar à níveis satisfatórios solos com o sulfentrazone.Palavras-chave: Bioensaio. Descontaminação. Fitotoxicidade. Residual de herbicidas. Abstract:Phytoremediation is an option for the decontamination of areas that have received intensive applications of herbicide. Determining the minimum period that a species should remain for remediation of the soil is critical for the optimisation of areas to be cultivated without the risks of carryover. The aim of this study was to evaluate the cultivation time of Canavalia ensiformis in soil contaminated with the herbicide sulfentrazone, for the species to remediate the soil to satisfactory levels. The experiment was set up in a greenhouse, using 10 dm 3 pots in a randomised block design and a 5 x 2 factorial scheme, with four replications. The factors comprised five periods of phytoremediation, i.e. cultivation times of the green-manure species of phytoremediator (0, 25, 50, 75 and 100 days after sowing -DAS), cultivated both with and without the presence of sulfentrazone (400 g ha -1 ). The species of bio-indicator was Pennisetum glaucum, grown for 42 DAS. During this period the following variables were evaluated: plant height (cm); visual toxicity (%), using a scale from 0 to 100 for the absence of symptoms and death of the plant respectively; and shoot dry matter (g). At 75 days of growth of the phytoremediator species, there was no difference between the soil that received the herbicide application and the soil with no application, f...

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Hydrocarbon contamination and plant species determine the phylogenetic and functional diversity of endophytic degrading bacteria

Cited by 60 publications

References 63 publications

O herbicida sulfentrazone interfere na biomassa microbiana e na atividade da microbiota do solo

O herbicida sulfentrazone interfere na biomassa microbiana e na atividade da microbiota do solo

Indoor-Biofilter Growth and Exposure to Airborne Chemicals Drive Similar Changes in Plant Root Bacterial Communities

Fitorremediação de solo contaminado com sulfentrazone em função do tempo de cultivo de Canavalia ensiformis

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