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Mine land valorization through energy maize production enhanced by the application of plant growth-promoting rhizobacteria and arbuscular mycorrhizal fungi.
Environ Sci Pollut Res Int. 2016 Apr; 23(7):6940-50.ES

Abstract

The use of heavy metals (HM) contaminated soils to grow energy crops can diminish the negative impact of HM in the environment improving land restoration. The effect of two PGPR (B1--Chryseobacterium humi ECP37(T) and B2--Pseudomonas reactans EDP28) and an AMF (F--Rhizophagus irregularis) on growth, Cd and Zn accumulation, and nutritional status of energy maize plants grown in a soil collected from an area adjacent to a Portuguese mine was assessed in a greenhouse experiment. Both bacterial strains, especially when co-inoculated with the AMF, acted as plant growth-promoting inoculants, increasing root and shoot biomass as well as shoot elongation. Cadmium was not detected in the maize tissues and a decrease in Zn accumulation was observed for all microbial treatments in aboveground and belowground tissues--with inoculation of maize with AMF and strain B2 leading to maximum reductions in Zn shoot and root accumulation of up to 48 and 43%, respectively. Although microbial single inoculation generally did not increase N and P levels in maize plants, co-inoculation of the PGPR and the AMF improved substantially P accumulation in roots. The DGGE analysis of the bacterial rhizosphere community showed that the samples inoculated with the AMF clustered apart of those without the AMF and the Shannon-Wiener Index (H') increased over the course of the experiment when both inoculants were present. This work shows the benefits of combined inoculation of AMF and PGPR for the growth energy maize in metal contaminated soils and their potential for the application in phytomanagement strategies.

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Authors+Show Affiliations

Moreira H
CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401, Porto, Portugal.
Pereira SI
CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401, Porto, Portugal.
Marques AP
CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401, Porto, Portugal.
Rangel AO
CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401, Porto, Portugal.
Castro PM
CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401, Porto, Portugal. plcastro@porto.ucp.pt.

MeSH

Biodegradation, EnvironmentalBiomassCadmiumGlomeromycotaMetals, HeavyMiningMycorrhizaePlant DevelopmentPlant RootsRhizobiumRhizosphereSoilSoil MicrobiologySoil PollutantsZea mays

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26676544

Citation

Moreira, Helena, et al. "Mine Land Valorization Through Energy Maize Production Enhanced By the Application of Plant Growth-promoting Rhizobacteria and Arbuscular Mycorrhizal Fungi." Environmental Science and Pollution Research International, vol. 23, no. 7, 2016, pp. 6940-50.
Moreira H, Pereira SI, Marques AP, et al. Mine land valorization through energy maize production enhanced by the application of plant growth-promoting rhizobacteria and arbuscular mycorrhizal fungi. Environ Sci Pollut Res Int. 2016;23(7):6940-50.
Moreira, H., Pereira, S. I., Marques, A. P., Rangel, A. O., & Castro, P. M. (2016). Mine land valorization through energy maize production enhanced by the application of plant growth-promoting rhizobacteria and arbuscular mycorrhizal fungi. Environmental Science and Pollution Research International, 23(7), 6940-50. https://doi.org/10.1007/s11356-015-5914-4
Moreira H, et al. Mine Land Valorization Through Energy Maize Production Enhanced By the Application of Plant Growth-promoting Rhizobacteria and Arbuscular Mycorrhizal Fungi. Environ Sci Pollut Res Int. 2016;23(7):6940-50. PubMed PMID: 26676544.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mine land valorization through energy maize production enhanced by the application of plant growth-promoting rhizobacteria and arbuscular mycorrhizal fungi. AU - Moreira,Helena, AU - Pereira,Sofia I A, AU - Marques,Ana P G C, AU - Rangel,António O S S, AU - Castro,Paula M L, Y1 - 2015/12/17/ PY - 2015/08/04/received PY - 2015/12/02/accepted PY - 2015/12/18/entrez PY - 2015/12/18/pubmed PY - 2016/10/16/medline KW - AMF KW - Maize KW - PGPR KW - Phytomanagement KW - Zinc SP - 6940 EP - 50 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 23 IS - 7 N2 - The use of heavy metals (HM) contaminated soils to grow energy crops can diminish the negative impact of HM in the environment improving land restoration. The effect of two PGPR (B1--Chryseobacterium humi ECP37(T) and B2--Pseudomonas reactans EDP28) and an AMF (F--Rhizophagus irregularis) on growth, Cd and Zn accumulation, and nutritional status of energy maize plants grown in a soil collected from an area adjacent to a Portuguese mine was assessed in a greenhouse experiment. Both bacterial strains, especially when co-inoculated with the AMF, acted as plant growth-promoting inoculants, increasing root and shoot biomass as well as shoot elongation. Cadmium was not detected in the maize tissues and a decrease in Zn accumulation was observed for all microbial treatments in aboveground and belowground tissues--with inoculation of maize with AMF and strain B2 leading to maximum reductions in Zn shoot and root accumulation of up to 48 and 43%, respectively. Although microbial single inoculation generally did not increase N and P levels in maize plants, co-inoculation of the PGPR and the AMF improved substantially P accumulation in roots. The DGGE analysis of the bacterial rhizosphere community showed that the samples inoculated with the AMF clustered apart of those without the AMF and the Shannon-Wiener Index (H') increased over the course of the experiment when both inoculants were present. This work shows the benefits of combined inoculation of AMF and PGPR for the growth energy maize in metal contaminated soils and their potential for the application in phytomanagement strategies. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26676544/Mine_land_valorization_through_energy_maize_production_enhanced_by_the_application_of_plant_growth_promoting_rhizobacteria_and_arbuscular_mycorrhizal_fungi_ DB - PRIME DP - Unbound Medicine ER -