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Phytoremediation of Zinc-Contaminated Soil and Zinc-Biofortification for Human Nutrition. SPRINGERBRIEFS IN MOLECULAR SCIENCE 2012. [DOI: 10.1007/978-94-007-1439-7_3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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53
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Zhao L, Sun YL, Cui SX, Chen M, Yang HM, Liu HM, Chai TY, Huang F. Cd-induced changes in leaf proteome of the hyperaccumulator plant Phytolacca americana. CHEMOSPHERE 2011; 85:56-66. [PMID: 21723586 DOI: 10.1016/j.chemosphere.2011.06.029] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 05/24/2011] [Accepted: 06/05/2011] [Indexed: 05/28/2023]
Abstract
Cadmium (Cd) is highly toxic to all organisms. Soil contamination by Cd has become an increasing problem worldwide due to the intensive use of Cd-containing phosphate fertilizers and industrial zinc mining. Phytolacca americana L. is a Cd hyperaccumulator plant that can grow in Cd-polluted areas. However, the molecular basis for its remarkable Cd resistance is not known. In this study, the effects of Cd exposure on protein expression patterns in P.americana was investigated by 2-dimensional gel electrophoresis (2-DE). 2-DE profiles of leaf proteins from both control and Cd-treated (400μM, 48h) seedlings were compared quantitatively using ImageMaster software. In total, 32 differentially expressed protein spots were identified using MALDI-TOF/TOF mass spectrometry coupled to protein database search, corresponding to 25 unique gene products. Of those 14 were enhanced/induced while 11 reduced under Cd treatment. The alteration pattern of protein expression was verified for several key proteins involved in distinct metabolic pathways by immuno-blot analysis. Major changes were found for the proteins involved in photosynthetic pathways as well as in the sulfur- and GSH-related metabolisms. One-third of the up-regulated proteins were attributed to transcription, translation and molecular chaperones including a protein belonging to the calreticulin family. Other proteins include antioxidative enzymes such as 2-cys-peroxidase and oxidoreductases. The results of this proteomic analysis provide the first and primary information regarding the molecular basis of Cd hypertolerance in P. americana.
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Affiliation(s)
- Le Zhao
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
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54
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Singh DK, McNellis TW. Fibrillin protein function: the tip of the iceberg? TRENDS IN PLANT SCIENCE 2011; 16:432-41. [PMID: 21571574 DOI: 10.1016/j.tplants.2011.03.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 03/31/2011] [Accepted: 03/31/2011] [Indexed: 05/03/2023]
Abstract
Fibrillins are nuclear-encoded, plastid proteins associated with chromoplast fibrils and chloroplast plastoglobules, thylakoids, photosynthetic antenna complexes, and stroma. There are 12 sub-families of fibrillins. However, only three of these sub-families have been characterized genetically or functionally. We review evidence indicating that fibrillins are involved in plastoglobule structural development, chromoplast pigment accumulation, hormonal responses, protection of the photosynthetic apparatus from photodamage, and plant resistance to a range of biotic and abiotic stresses. The area of fibrillin research has substantial growth potential and will contribute to better understanding of mechanisms of plant stress tolerance and plastid structure and function.
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Affiliation(s)
- Dharmendra K Singh
- Department of Plant Pathology, The Pennsylvania State University, University Park, PA 16802, USA
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55
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Farinati S, DalCorso G, Panigati M, Furini A. Interaction between selected bacterial strains and Arabidopsis halleri modulates shoot proteome and cadmium and zinc accumulation. JOURNAL OF EXPERIMENTAL BOTANY 2011; 62:3433-47. [PMID: 21357773 PMCID: PMC3130167 DOI: 10.1093/jxb/err015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 01/17/2011] [Accepted: 01/17/2011] [Indexed: 05/20/2023]
Abstract
The effects of plant-microbe interactions between the hyperaccumulator Arabidopsis halleri and eight bacterial strains, isolated from the rhizosphere of A. halleri plants grown in a cadmium- and zinc-contaminated site, were analysed for shoot metal accumulation, shoot proteome, and the transcription of genes involved in plant metal homeostasis and hyperaccumulation. Cadmium and zinc concentrations were lower in the shoots of plants cultivated in the presence of these metals plus the selected bacterial strains compared with plants grown solely with these metals or, as previously reported, with plants grown with these metals plus the autochthonous rhizosphere-derived microorganisms. The shoot proteome of plants cultivated in the presence of these selected bacterial strains plus metals, showed an increased abundance of photosynthesis- and abiotic stress-related proteins (e.g. subunits of the photosynthetic complexes, Rubisco, superoxide dismutase, and malate dehydrogenase) counteracted by a decreased amount of plant defence-related proteins (e.g. endochitinases, vegetative storage proteins, and β-glucosidase). The transcription of several homeostasis genes was modulated by the microbial communities and by Cd and Zn content in the shoot. Altogether these results highlight the importance of plant-microbe interactions in plant protein expression and metal accumulation and emphasize the possibility of exploiting microbial consortia for increasing or decreasing shoot metal content.
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Affiliation(s)
- Silvia Farinati
- Dipartimento di Biotecnologie, Università di Verona, Strada Le Grazie 15, I-37134 Verona, Italy
| | - Giovanni DalCorso
- Dipartimento di Biotecnologie, Università di Verona, Strada Le Grazie 15, I-37134 Verona, Italy
| | - Monica Panigati
- Dipartimento di Chimica Inorganica, Metallorganica e Analitica ‘L. Malatesta’, Università di Milano Via Venezian 21, I-20133 Milano, Italy
| | - Antonella Furini
- Dipartimento di Biotecnologie, Università di Verona, Strada Le Grazie 15, I-37134 Verona, Italy
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56
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Aloui A, Recorbet G, Robert F, Schoefs B, Bertrand M, Henry C, Gianinazzi-Pearson V, Dumas-Gaudot E, Aschi-Smiti S. Arbuscular mycorrhizal symbiosis elicits shoot proteome changes that are modified during cadmium stress alleviation in Medicago truncatula. BMC PLANT BIOLOGY 2011; 11:75. [PMID: 21545723 PMCID: PMC3112074 DOI: 10.1186/1471-2229-11-75] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 05/05/2011] [Indexed: 05/21/2023]
Abstract
BACKGROUND Arbuscular mycorrhizal (AM) fungi, which engage a mutualistic symbiosis with the roots of most plant species, have received much attention for their ability to alleviate heavy metal stress in plants, including cadmium (Cd). While the molecular bases of Cd tolerance displayed by mycorrhizal plants have been extensively analysed in roots, very little is known regarding the mechanisms by which legume aboveground organs can escape metal toxicity upon AM symbiosis. As a model system to address this question, we used Glomus irregulare-colonised Medicago truncatula plants, which were previously shown to accumulate and tolerate heavy metal in their shoots when grown in a substrate spiked with 2 mg Cd kg(-1). RESULTS The measurement of three indicators for metal phytoextraction showed that shoots of mycorrhizal M. truncatula plants have a capacity for extracting Cd that is not related to an increase in root-to-shoot translocation rate, but to a high level of allocation plasticity. When analysing the photosynthetic performance in metal-treated mycorrhizal plants relative to those only Cd-supplied, it turned out that the presence of G. irregulare partially alleviated the negative effects of Cd on photosynthesis. To test the mechanisms by which shoots of Cd-treated mycorrhizal plants avoid metal toxicity, we performed a 2-DE/MALDI/TOF-based comparative proteomic analysis of the M. truncatula shoot responses upon mycorrhization and Cd exposure. Whereas the metal-responsive shoot proteins currently identified in non-mycorrhizal M. truncatula indicated that Cd impaired CO2 assimilation, the mycorrhiza-responsive shoot proteome was characterised by an increase in photosynthesis-related proteins coupled to a reduction in glugoneogenesis/glycolysis and antioxidant processes. By contrast, Cd was found to trigger the opposite response coupled the up-accumulation of molecular chaperones in shoot of mycorrhizal plants relative to those metal-free. CONCLUSION Besides drawing a first picture of shoot proteome modifications upon AM symbiosis and/or heavy metal stress in legume plants, the current work argues for allocation plasticity as the main driving force for Cd extraction in aboveground tissues of M. truncatula upon mycorrhization. Additionally, according to the retrieved proteomic data, we propose that shoots of mycorrhizal legume plants escape Cd toxicity through a metabolic shift implying the glycolysis-mediated mobilization of defence mechanisms at the expense of the photosynthesis-dependent symbiotic sucrose sink.
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Affiliation(s)
- Achref Aloui
- UMR INRA 1088/CNRS 5184/UB. Plante-Microbe-Environnement. INRA-CMSE. BP 86510. 21065 Dijon Cedex, France
- Département des Sciences Biologiques, Faculté des Sciences de Tunis, Campus universitaire, 1060 Tunis, Tunisia
| | - Ghislaine Recorbet
- UMR INRA 1088/CNRS 5184/UB. Plante-Microbe-Environnement. INRA-CMSE. BP 86510. 21065 Dijon Cedex, France
| | - Franck Robert
- UMR INRA 1088/CNRS 5184/UB. Plante-Microbe-Environnement. INRA-CMSE. BP 86510. 21065 Dijon Cedex, France
| | - Benoît Schoefs
- UMR INRA 1088/CNRS 5184/UB. Plante-Microbe-Environnement. INRA-CMSE. BP 86510. 21065 Dijon Cedex, France
| | - Martine Bertrand
- Microorganismes, Metaux et Toxicité, Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, BP 324, 50103 Cherbourg-Octeville Cedex, France
| | - Céline Henry
- Unité de Biochimie Bactérienne, PAPPSO, batiment 526, Domaine de Vilvert 78352, Jouy en Josas Cedex, France
| | | | - Eliane Dumas-Gaudot
- UMR INRA 1088/CNRS 5184/UB. Plante-Microbe-Environnement. INRA-CMSE. BP 86510. 21065 Dijon Cedex, France
| | - Samira Aschi-Smiti
- Département des Sciences Biologiques, Faculté des Sciences de Tunis, Campus universitaire, 1060 Tunis, Tunisia
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Villiers F, Ducruix C, Hugouvieux V, Jarno N, Ezan E, Garin J, Junot C, Bourguignon J. Investigating the plant response to cadmium exposure by proteomic and metabolomic approaches. Proteomics 2011; 11:1650-63. [PMID: 21462346 DOI: 10.1002/pmic.201000645] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 01/25/2011] [Accepted: 02/01/2011] [Indexed: 11/10/2022]
Abstract
Monitoring molecular dynamics of an organism upon stress is probably the best approach to decipher physiological mechanisms involved in the stress response. Quantitative analysis of proteins and metabolites is able to provide accurate information about molecular changes allowing the establishment of a range of more or less specific mechanisms, leading to the identification of major players in the considered pathways. Such tools have been successfully used to analyze the plant response to cadmium (Cd), a major pollutant capable of causing severe health issues as it accumulates in the food chain. We present a summary of proteomics and metabolomics works that contributed to a better understanding of the molecular aspects involved in the plant response to Cd. This work allowed us to provide a finer picture of general signaling, regulatory and metabolic pathways that appeared to be affected upon Cd stress. In particular, we conclude on the advantage of employing different approaches of global proteome- and metabolome-wide techniques, combined with more targeted analysis to answer molecular questions and unravel biological networks. Finally, we propose possible directions and methodologies for future prospectives in this field, as many aspects of the plant-Cd interaction remain to be discovered.
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Affiliation(s)
- Florent Villiers
- Commissariat à l'Energie Atomique, Direction des Sciences du Vivant, Institut de Recherches en Technologies et Sciences pour le Vivant, Laboratoire de Physiologie Cellulaire Végétale, Grenoble, France
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58
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Bona E, Marsano F, Massa N, Cattaneo C, Cesaro P, Argese E, Sanità di Toppi L, Cavaletto M, Berta G. Proteomic analysis as a tool for investigating arsenic stress in Pteris vittata roots colonized or not by arbuscular mycorrhizal symbiosis. J Proteomics 2011; 74:1338-50. [PMID: 21457805 DOI: 10.1016/j.jprot.2011.03.027] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 03/22/2011] [Accepted: 03/23/2011] [Indexed: 12/23/2022]
Abstract
Pteris vittata can tolerate very high soil arsenic concentration and rapidly accumulates the metalloid in its fronds. However, its tolerance to arsenic has not been completely explored. Arbuscular mycorrhizal (AM) fungi colonize the root of most terrestrial plants, including ferns. Mycorrhizae are known to affect plant responses in many ways: improving plant nutrition, promoting plant tolerance or resistance to pathogens, drought, salinity and heavy metal stresses. It has been observed that plants growing on arsenic polluted soils are usually mycorrhizal and that AM fungi enhance arsenic tolerance in a number of plant species. The aim of the present work was to study the effects of the AM fungus Glomus mosseae on P. vittata plants treated with arsenic using a proteomic approach. Image analysis showed that 37 spots were differently affected (21 identified). Arsenic treatment affected the expression of 14 spots (12 up-regulated and 2 down-regulated), while in presence of G. mosseae modulated 3 spots (1 up-regulated and 2 down-regulated). G. mosseae, in absence of arsenic, modulated 17 spots (13 up-regulated and 4 down-regulated). Arsenic stress was observed even in an arsenic tolerant plant as P. vittata and a protective effect of AM symbiosis toward arsenic stress was observed.
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Affiliation(s)
- Elisa Bona
- Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale A. Avogadro, Alessandria, Novara, Vercelli, Italy.
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59
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Kabała K, Janicka-Russak M. Differential regulation of vacuolar H+-ATPase and H+-PPase in Cucumis sativus roots by zinc and nickel. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2011; 180:531-9. [PMID: 21421401 DOI: 10.1016/j.plantsci.2010.11.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 11/04/2010] [Accepted: 11/29/2010] [Indexed: 05/16/2023]
Abstract
Zinc and nickel, as micronutrients, are essential for all organisms. We investigated the effect of 10 and 100 μM Zn and Ni on two tonoplast proton pumps, vacuolar H+-ATPase (V-ATPase) (EC 3.6.3.14) and vacuolar H+-pyrophosphatase (V-PPase) (EC 3.6.1.1), in cucumber roots. ATP-dependent proton transport as well as ATP hydrolysis, catalyzed by V-ATPase, decreased in roots after exposure of plants to both Zn and Ni under all the examined conditions. In contrast, V-PPase activities, measured as PP(i) hydrolysis and PP(i)-driven H+ transport, were stimulated by lower concentration of metals. However, at higher metal concentration, hydrolytic activity of V-PPase remained unchanged, while PP(i)-dependent proton pumping into the tonoplast vesicles was reduced. When heavy metals were introduced into the enzyme reaction medium, both V-ATPase and V-PPase activities were lowered by Zn and Ni in a similar manner. As the gene expression and immunoblot analyses depicted, observed changes in the activity of both tonoplast proton pumps in response to zinc and nickel were not due to the modification in the expression of the CsVHA-A, CsVHA-c and CsVP genes encoding V-ATPase subunit A and c, and V-PPase, respectively, in cucumber roots or in amounts of enzyme proteins. Moreover, Zn as well as Ni ions did not enhance the lipid peroxidation in the root tonoplast fractions. Comparison of ATP and pyrophosphate contents in the control roots and roots treated with heavy metals revealed that Zn and Ni do not affect the ATP amount but reduce the PP(i) level.
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Affiliation(s)
- Katarzyna Kabała
- Department of Plant Physiology, Institute of Plant Biology, University of Wrocław, Kanonia 6/8, 50-328 Wrocław, Poland.
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60
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Park JH, Lamb D, Paneerselvam P, Choppala G, Bolan N, Chung JW. Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:549-74. [PMID: 20974519 DOI: 10.1016/j.jhazmat.2010.09.082] [Citation(s) in RCA: 352] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 09/22/2010] [Accepted: 09/23/2010] [Indexed: 05/21/2023]
Abstract
As land application becomes one of the important waste utilization and disposal practices, soil is increasingly being seen as a major source of metal(loid)s reaching food chain, mainly through plant uptake and animal transfer. With greater public awareness of the implications of contaminated soils on human and animal health there has been increasing interest in developing technologies to remediate contaminated sites. Bioremediation is a natural process which relies on soil microorganisms and higher plants to alter metal(loid) bioavailability and can be enhanced by addition of organic amendments to soils. Large quantities of organic amendments, such as manure compost, biosolid and municipal solid wastes are used as a source of nutrients and also as a conditioner to improve the physical properties and fertility of soils. These organic amendments that are low in metal(loid)s can be used as a sink for reducing the bioavailability of metal(loid)s in contaminated soils and sediments through their effect on the adsorption, complexation, reduction and volatilization of metal(loid)s. This review examines the mechanisms for the enhanced bioremediation of metal(loid)s by organic amendments and discusses the practical implications in relation to sequestration and bioavailability of metal(loid)s in soils.
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Affiliation(s)
- Jin Hee Park
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia
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61
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Zeng XW, Qiu RL, Ying RR, Tang YT, Tang L, Fang XH. The differentially-expressed proteome in Zn/Cd hyperaccumulator Arabis paniculata Franch. in response to Zn and Cd. CHEMOSPHERE 2011; 82:321-328. [PMID: 21074242 DOI: 10.1016/j.chemosphere.2010.10.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 10/06/2010] [Accepted: 10/11/2010] [Indexed: 05/30/2023]
Abstract
The Zn/Cd hyperaccumulator Arabis paniculata is able to tolerate high level of Zn and Cd. To clarify the molecular basis of Zn and Cd tolerance, proteomic approaches were applied to identify proteins involved in Zn and Cd stress response in A. paniculata. Plants were exposed to both low and high Zn or Cd levels for 10 d. Proteins of leaves in each treatment were separated by 2-DE (two-dimensional electrophoresis). Nineteen differentially-expressed proteins upon Zn treatments and 18 proteins upon Cd treatments were observed. Seventeen out of 19 of Zn-responsive proteins and 16 out of 18 of Cd-responsive proteins were identified using MALDI-TOF/TOF-MS (matrix-assisted laser desorption/ionization time of flight mass spectrometry). The most of identified proteins were known to function in energy metabolism, xenobiotic/antioxidant defense, cellular metabolism, protein metabolism, suggesting the responses of A. paniculata to Zn and Cd share similar pathway to certain extend. However, the different metal defense was also revealed between Zn and Cd treatment in A. paniculata. These results indicated that A. paniculata against to Zn stress mainly by enhancement of energy metabolism including auxin biosynthesis and protein metabolism to maintain plant growth and correct misfolded proteins. In the case of Cd, plants adopted antioxidative/xenobiotic defense and cellular metabolism to keep cellular redox homeostasis and metal-transportation under Cd stress.
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Affiliation(s)
- Xiao-Wen Zeng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, Guangdong Province 510275, PR China; School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong Province 510008, PR China
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Stout L, Nüsslein K. Biotechnological potential of aquatic plant-microbe interactions. Curr Opin Biotechnol 2010; 21:339-45. [PMID: 20494570 DOI: 10.1016/j.copbio.2010.04.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 04/13/2010] [Accepted: 04/13/2010] [Indexed: 11/18/2022]
Abstract
The rhizosphere in terrestrial systems is the region of soil surrounding plant roots where there is increased microbial activity; in aquatic plants, this definition may be less clear because of diffusion of nutrients in water, but there is still a zone of influence by plant roots in this environment [1]. Within that zone chemical conditions differ from those of the surrounding environment as a consequence of a range of processes that were induced either directly by the activity of plant roots or by the activity of rhizosphere microflora. Recently, there are a number of new studies related to rhizospheres of aquatic plants and specifically their increased potential for remediation of contaminants, especially remediation of metals through aquatic plant-microbial interaction.
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Affiliation(s)
- L Stout
- Department of Biology, Southern Connecticut State University, New Haven, CT 06515, United States.
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