Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation

Soil is the sink and source of heavy metals (both geogenic and anthropogenic) and plants are the ecosystem regulators, balancing the chemistry of life on earth. However, roots are the only connection between soil and plants, which are the real engineers of ecosystem dynamics responsible for environm...

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Autores principales:	Seshadri,B, Bolan,N.S, Naidu,R
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2015
Materias:	Metal(loid)s bioavailability phytoremediation rhizosphere transformation root exudates
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000200015
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spelling	oai:scielo:S0718-951620150002000152015-09-29Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediationSeshadri,BBolan,N.SNaidu,R Metal(loid)s bioavailability phytoremediation rhizosphere transformation root exudates Soil is the sink and source of heavy metals (both geogenic and anthropogenic) and plants are the ecosystem regulators, balancing the chemistry of life on earth. However, roots are the only connection between soil and plants, which are the real engineers of ecosystem dynamics responsible for environmental balance and stability. The plant-soil interface termed as ‘rhizosphere’ is a typical zone of soil where the physical, chemical and biological characteristics are different from bulk soil (outside the rhizosphere region). This is mainly controlled by physiological response from plants to the environmental changes through exudation of chemicals from root region and the cascade of chemical (changes in pH and redox potential, release of anions and nutrient transformation) and biological (microbial association) events that follow. The other adaptive mechanisms include root length and area as affected by temperature, moisture and nutrient content of the soil. In the recent years, advanced technologies have lead to significant findings at the micro-level in rhizosphere research, targeting the role of root-soil interface towards nutrient availability and agricultural productivity. However, with increasing human activities (including agriculture), undesirable quantites of heavy metals are being added to the environment thereby resulting in soil contamination. This review will discuss in detail on the processes involved in the (im)mobilisation of heavy metals in and around the root region as affected by chemical (pH and root exudates) and biological (microorganisms) components.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.15 n.2 20152015-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000200015en10.4067/S0718-95162015005000043
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Metal(loid)s bioavailability phytoremediation rhizosphere transformation root exudates
spellingShingle	Metal(loid)s bioavailability phytoremediation rhizosphere transformation root exudates Seshadri,B Bolan,N.S Naidu,R Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
description	Soil is the sink and source of heavy metals (both geogenic and anthropogenic) and plants are the ecosystem regulators, balancing the chemistry of life on earth. However, roots are the only connection between soil and plants, which are the real engineers of ecosystem dynamics responsible for environmental balance and stability. The plant-soil interface termed as ‘rhizosphere’ is a typical zone of soil where the physical, chemical and biological characteristics are different from bulk soil (outside the rhizosphere region). This is mainly controlled by physiological response from plants to the environmental changes through exudation of chemicals from root region and the cascade of chemical (changes in pH and redox potential, release of anions and nutrient transformation) and biological (microbial association) events that follow. The other adaptive mechanisms include root length and area as affected by temperature, moisture and nutrient content of the soil. In the recent years, advanced technologies have lead to significant findings at the micro-level in rhizosphere research, targeting the role of root-soil interface towards nutrient availability and agricultural productivity. However, with increasing human activities (including agriculture), undesirable quantites of heavy metals are being added to the environment thereby resulting in soil contamination. This review will discuss in detail on the processes involved in the (im)mobilisation of heavy metals in and around the root region as affected by chemical (pH and root exudates) and biological (microorganisms) components.
author	Seshadri,B Bolan,N.S Naidu,R
author_facet	Seshadri,B Bolan,N.S Naidu,R
author_sort	Seshadri,B
title	Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
title_short	Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
title_full	Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
title_fullStr	Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
title_full_unstemmed	Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
title_sort	rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000200015
work_keys_str_mv	AT seshadrib rhizosphereinducedheavymetalloidtransformationinrelationtobioavailabilityandremediation AT bolanns rhizosphereinducedheavymetalloidtransformationinrelationtobioavailabilityandremediation AT naidur rhizosphereinducedheavymetalloidtransformationinrelationtobioavailabilityandremediation
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Rhizosphere-induced heavy metal(loid) transformation in relation to bioavailability and remediation

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