Repositorio
Institucional

Mora, M. L.

Duran, P.

Acuna, J. J.

Jorquera, M. A.

Azcon, R.

Borie, F.

Cornejo, P.

Enhanced selenium content in wheat grain by co-inoculation of selenobacteria and arbuscular mycorrhizal fungi: A preliminary study as a potential Se biofortification strategy

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

JOURNAL OF CEREAL SCIENCE

en

Cereal crops grown in southern Chilean Andisol provide suboptimal levels of this metalloid for human diet. Certain rhizosphere microorganisms, such as rhizobacteria and arbuscular mycorrhizal fungi can increase the selenium uptake in plants. The purpose of this study was to evaluate selenium acquisition by wheat plants through the co-inoculation of native selenobacteria strains (Stenotrophomonas sp. B19, Enterobacter sp. B16, Bacillus sp. R12 and Pseudomonas sp. R8), both individually and in Mixture, as selenonanosphere source with one arbuscular mycorrhizal fungus (Glomus claroideum). Total selenium content in plant tissues and substrate was analyzed. According to our results, significant higher selenium content was found in inoculated plants in comparison to uninoculated controls (P <= 0.05). Independently of fungal presence, selenium content in grain from plants inoculated with Enterobacter sp. B16 (236 mg kg(-1)) was higher than the rest of the strains (116-164 mg kg(-1)). However, when plants were co-inoculated with a mixture of selenobacteria strains and G. claroideum, selenium content in grain was 23.5% higher (725 mg kg(-1)) than non-mycorrhizal plants (587 mg kg(-1)). The results suggest a synergistic effect between the selenobacteria mixture and G. claroideum associated to major biodiversity and demonstrate a great potential of these rhizosphere microorganisms for biofortification of cereals and its derivates. (C) 2012 Elsevier Ltd. All rights reserved.

Artículo original

This study was supported by CONICYT Postdoctoral scholarship 3130542 and FONDECYT 1100625 of the Chilean Government. J.J. Acuna is thankful for the financial support of CONICYT through the Doctoral Fellowship Program. M.A. Jorquera also acknowledges financial support by FONDECYT 1120505.

Este estudio fue financiado por la beca postdoctoral CONICYT n.° 3130542 y el FONDECYT n.° 1100625 del Gobierno de Chile. J.J. Acuña agradece el apoyo financiero de CONICYT a través del Programa de Becas Doctorales. M.A. Jorquera también agradece el apoyo financiero del FONDECYT n.° 1120505.

10.1016/j.jcs.2012.11.012

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Selenium

Biofortification

Bacteria

Arbuscular mycorrhizal fungi

RYEGRASS

SELENATE

PLANTS

SOIL

BIOAVAILABILITY

FERTILIZATION

NANOPARTICLES

RHIZOSPHERE

CULTIVARS

BACTERIUM

Selenio

Biofortificación

Bacterias

Hongos micorrícicos arbusculares

RIGASTRO

SELENATO

PLANTAS

SUELO

BIODISPONIBILIDAD

FERTILIZACIÓN

NANOPARTÍCULAS

RIZOSFERA

CULTIVARES

BACTERIA

Selenium

Biofortification

Bacteria

Arbuscular mycorrhizal fungi

RYEGRASS

SELENATE

PLANTS

SOIL

BIOAVAILABILITY

FERTILIZATION

NANOPARTICLES

RHIZOSPHERE

CULTIVARS

BACTERIUM

Selenio

Biofortificación

Bacterias

Hongos micorrícicos arbusculares

RIGASTRO

SELENATO

PLANTAS

SUELO

BIODISPONIBILIDAD

FERTILIZACIÓN

NANOPARTÍCULAS

RIZOSFERA

CULTIVARES

BACTERIA

Biotecnología agrícola

Agronómica

Ciencias del suelo

Enhanced selenium content in wheat grain by co-inoculation of selenobacteria and arbuscular mycorrhizal fungi: A preliminary study as a potential Se biofortification strategy

JOURNAL OF CEREAL SCIENCE

hibrida

verde

metadata

metadata

en

Artículo original

versión publicada

ANID CONICYT 3130542#ANID CONICYT FONDECYT 1100625#ANID CONICYT FONDECYT 1120505

ANID CONICYT 3130542

ANID CONICYT FONDECYT 1100625

ANID CONICYT FONDECYT 1120505

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

0733-5210

275

280

Ciencia y tecnología de los alimentos

Food Science & Technology

pdf

WOS:000319644700009