Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils

The ferruginous rupestrian grasslands (FRG) in the Iron Quadrangle (IQ) are ecosystems characterized by rocky soils with reduced availability of water and nutrients, but high levels of metals. In order to comprehend the interference of microorganisms on the adaptive process of endemic plant Mimosa c...

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Autores principales:	Barbosa Felestrino,Érica, de Almeida Barbosa Assis,Renata, de Carvalho Lemes,Camila Gracyelle, Ferreira Cordeiro,Isabella, Peixoto Fonseca,Natasha, Villa,Morghana Marina, Tabuso Vieira,Izadora, Yoshino Kamino,Luciana Hiromi, Fonseca do Carmo,Flávio, Marcio Moreira,Leandro
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Arsenic removal arsenic resistant bacteria Iron Quadrangle plant growth-promoting rhizobacteria rhizoremediation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000400019
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spelling	oai:scielo:S0718-951620170004000192017-12-20Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soilsBarbosa Felestrino,Éricade Almeida Barbosa Assis,Renatade Carvalho Lemes,Camila GracyelleFerreira Cordeiro,IsabellaPeixoto Fonseca,NatashaVilla,Morghana MarinaTabuso Vieira,IzadoraYoshino Kamino,Luciana HiromiFonseca do Carmo,FlávioMarcio Moreira,Leandro Arsenic removal arsenic resistant bacteria Iron Quadrangle plant growth-promoting rhizobacteria rhizoremediation The ferruginous rupestrian grasslands (FRG) in the Iron Quadrangle (IQ) are ecosystems characterized by rocky soils with reduced availability of water and nutrients, but high levels of metals. In order to comprehend the interference of microorganisms on the adaptive process of endemic plant Mimosa calodendrum (Fabaceae), bacteria associated with its roots and rhizosphere were isolated. Fourteen isolates were obtained and subsequently grown in the presence of different concentrations of arsenic (As) species. The isolate Mc250, an Alcaligenes faecalis strain, resisted to 10 mM of As (III) and 800 mM of As (V). In the presence of this strain, atomic spectrometer detected a reduction of 55% for As (III) and 72% for As (V) respectively in 10 mM and 500 mM solution. Scanning electron microscopy of this isolate demonstrated morphological modification and EDX spectroscopy revealed the presence of both As species adsorbed on the membrane, justifying the removal observed in the in vitro assays. To validate this potential removal of As in vivo, tomato plants were used as grown model in the presence and absence of A. faecalis in soil previously contaminated with 5 mM of As (III). After 14 days, plants from contaminated soil had their growth improved when compared to untreated control plants. All these results suggest for the first time that plant-associated bacteria from FRG-IQ present potential for soil rhizoremediation and may benefit the adaptive processes of plants in extreme environments including application in recovering degraded areas.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.17 n.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000400019en10.4067/S0718-95162017000400019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Arsenic removal arsenic resistant bacteria Iron Quadrangle plant growth-promoting rhizobacteria rhizoremediation
spellingShingle	Arsenic removal arsenic resistant bacteria Iron Quadrangle plant growth-promoting rhizobacteria rhizoremediation Barbosa Felestrino,Érica de Almeida Barbosa Assis,Renata de Carvalho Lemes,Camila Gracyelle Ferreira Cordeiro,Isabella Peixoto Fonseca,Natasha Villa,Morghana Marina Tabuso Vieira,Izadora Yoshino Kamino,Luciana Hiromi Fonseca do Carmo,Flávio Marcio Moreira,Leandro Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
description	The ferruginous rupestrian grasslands (FRG) in the Iron Quadrangle (IQ) are ecosystems characterized by rocky soils with reduced availability of water and nutrients, but high levels of metals. In order to comprehend the interference of microorganisms on the adaptive process of endemic plant Mimosa calodendrum (Fabaceae), bacteria associated with its roots and rhizosphere were isolated. Fourteen isolates were obtained and subsequently grown in the presence of different concentrations of arsenic (As) species. The isolate Mc250, an Alcaligenes faecalis strain, resisted to 10 mM of As (III) and 800 mM of As (V). In the presence of this strain, atomic spectrometer detected a reduction of 55% for As (III) and 72% for As (V) respectively in 10 mM and 500 mM solution. Scanning electron microscopy of this isolate demonstrated morphological modification and EDX spectroscopy revealed the presence of both As species adsorbed on the membrane, justifying the removal observed in the in vitro assays. To validate this potential removal of As in vivo, tomato plants were used as grown model in the presence and absence of A. faecalis in soil previously contaminated with 5 mM of As (III). After 14 days, plants from contaminated soil had their growth improved when compared to untreated control plants. All these results suggest for the first time that plant-associated bacteria from FRG-IQ present potential for soil rhizoremediation and may benefit the adaptive processes of plants in extreme environments including application in recovering degraded areas.
author	Barbosa Felestrino,Érica de Almeida Barbosa Assis,Renata de Carvalho Lemes,Camila Gracyelle Ferreira Cordeiro,Isabella Peixoto Fonseca,Natasha Villa,Morghana Marina Tabuso Vieira,Izadora Yoshino Kamino,Luciana Hiromi Fonseca do Carmo,Flávio Marcio Moreira,Leandro
author_facet	Barbosa Felestrino,Érica de Almeida Barbosa Assis,Renata de Carvalho Lemes,Camila Gracyelle Ferreira Cordeiro,Isabella Peixoto Fonseca,Natasha Villa,Morghana Marina Tabuso Vieira,Izadora Yoshino Kamino,Luciana Hiromi Fonseca do Carmo,Flávio Marcio Moreira,Leandro
author_sort	Barbosa Felestrino,Érica
title	Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
title_short	Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
title_full	Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
title_fullStr	Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
title_full_unstemmed	Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
title_sort	alcaligenes faecalisassociated with mimosa calodendron rizhosphere assist plant survival in arsenic rich soils
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000400019
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Alcaligenes faecalisassociated with Mimosa calodendron rizhosphere assist plant survival in arsenic rich soils

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