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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
20/02/2024 |
Actualizado : |
20/02/2024 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
SANGUIÑEDO, P.; FACCIO, R.; ABREO, E.; ALBORÉS, S. |
Afiliación : |
PAULA SANGUINEDO, Área de Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, 11800, Uruguay; RICARDO FACCIO, Centro NanoMat & Grupo Física, Departamento de Experimentación y Teoría de la Estructura de la Materia y sus Aplicaciones (DETEMA), Facultad de Química, Universidad de la República, Montevideo, 11800, Uruguay; EDUARDO RAUL ABREO GIMENEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SILVANA ALBORÉS, Área de Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, 11800, Uruguay. |
Título : |
Biogenic silver and copper nanoparticles: potential antifungal agents in rice and wheat crops. |
Fecha de publicación : |
2023 |
Fuente / Imprenta : |
Chemistry (Switzerland). 2023, 15(4): 2104-2119. https://doi.org/10.3390/chemistry5040143 -- OPEN ACCESS. |
ISSN : |
eISSN 2624-8549 |
DOI : |
10.3390/chemistry5040143 |
Idioma : |
Inglés |
Notas : |
Article history: Submission received: 5 August 2023; Revised: 2 October 2023; Accepted: 4 October 2023; Published: 6 October 2023. -- Academic editor: Simona Concilio -- Supplementary Materials: The following supporting information can be downloaded at - https://www.mdpi.com/article/10.3390/chemistry5040143/s1 -- Funding: This research was funded by Project INNOVAGRO FSA_1_2018_1_152546 (Agencia Nacional de Investigación e Innovación-Instituto Nacional de Investigación Agropecuaria), Posgrado en Biotecnología y Comisión Académica de Posgrado (CAP) (Universidad de la República, Uruguay), Program for the Development of Basic Sciences (PEDECIBA-Química) and Sociedad Uruguaya de Microbiología (SUM). -- Acknowledgments: The authors acknowledge Sebastian Martínez, Sandra Lupo, and Silvia Pereyra, who kindly provided the fungal strains used in this study. -- This article belongs to the Special Issue Recent Advances in Antimicrobial Materials (https://www.mdpi.com/journal/chemistry/special_issues/Antimicrobial_Material ) -- Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). -- Publisher: Multidisciplinary Digital Publishing Institute (MDPI). |
Contenido : |
ABSTRACT.- Metal nanoparticles are widely studied due to their various applications, such as their potential use in the control of phytopathogens and the promotion of plant growth, with a significant impact on agriculture. Various microbial metabolites are used to reduce and stabilize metals and metal oxides to the nanoscale. In the present work, the biological synthesis of silver and copper oxide nanoparticles using Trichoderma harzianum TA2 is reported. The nanoparticles were purified and characterized with complementary methodologies to obtain information on the size, distribution, morphology, surface charge, and functional groups of the nanoparticles. The in vitro antifungal activity of the nanoparticles against pathogens of rice and wheat, as well as their effect on seed germination, were evaluated. In general, the nanoparticles showed a spherical shape, an average size of 17-26 nm, and low polydispersity. Furthermore, they showed antifungal activity at low concentrations against Sclerotium oryzae (0.140 nM), Rhizoctonia oryzae-sativae (0.140 nM), Fusarium graminearum (0.034 nM), and Pyricularia oryzae (0.034 nM). The germination of seeds treated with nanoparticles was not negatively affected. This is the first report of biogenic silver and copper oxide nanoparticles from a single strain of T.harzianum with antifungal activity against four phytopathogens of interest in Uruguay. Furthermore, the synthesis of the biogenic nanoparticles was faster and more efficient than previous reports using other fungi. In conclusion, this work reveals that biogenic metallic nanoparticles from T. harzianum TA2 can be considered as candidates for the control of phytopathogens affecting important crops.. © 2023 by the authors. MenosABSTRACT.- Metal nanoparticles are widely studied due to their various applications, such as their potential use in the control of phytopathogens and the promotion of plant growth, with a significant impact on agriculture. Various microbial metabolites are used to reduce and stabilize metals and metal oxides to the nanoscale. In the present work, the biological synthesis of silver and copper oxide nanoparticles using Trichoderma harzianum TA2 is reported. The nanoparticles were purified and characterized with complementary methodologies to obtain information on the size, distribution, morphology, surface charge, and functional groups of the nanoparticles. The in vitro antifungal activity of the nanoparticles against pathogens of rice and wheat, as well as their effect on seed germination, were evaluated. In general, the nanoparticles showed a spherical shape, an average size of 17-26 nm, and low polydispersity. Furthermore, they showed antifungal activity at low concentrations against Sclerotium oryzae (0.140 nM), Rhizoctonia oryzae-sativae (0.140 nM), Fusarium graminearum (0.034 nM), and Pyricularia oryzae (0.034 nM). The germination of seeds treated with nanoparticles was not negatively affected. This is the first report of biogenic silver and copper oxide nanoparticles from a single strain of T.harzianum with antifungal activity against four phytopathogens of interest in Uruguay. Furthermore, the synthesis of the biogenic nanoparticles was faster and more efficient than p... Presentar Todo |
Palabras claves : |
Antifungal; Biogenic nanoparticles; Partnership for the goals - Goal 17; Phytopathogens; PLATAFORMA DE BIOINSUMOS - INIA; Sustainable Development Goals (SDGs); Trichoderma. |
Asunto categoría : |
F01 Cultivo |
URL : |
https://www.mdpi.com/2624-8549/5/4/143/pdf
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Marc : |
LEADER 03975naa a2200277 a 4500 001 1064467 005 2024-02-20 008 2023 bl uuuu u00u1 u #d 022 $aeISSN 2624-8549 024 7 $a10.3390/chemistry5040143$2DOI 100 1 $aSANGUIÑEDO, P. 245 $aBiogenic silver and copper nanoparticles$bpotential antifungal agents in rice and wheat crops.$h[electronic resource] 260 $c2023 500 $aArticle history: Submission received: 5 August 2023; Revised: 2 October 2023; Accepted: 4 October 2023; Published: 6 October 2023. -- Academic editor: Simona Concilio -- Supplementary Materials: The following supporting information can be downloaded at - https://www.mdpi.com/article/10.3390/chemistry5040143/s1 -- Funding: This research was funded by Project INNOVAGRO FSA_1_2018_1_152546 (Agencia Nacional de Investigación e Innovación-Instituto Nacional de Investigación Agropecuaria), Posgrado en Biotecnología y Comisión Académica de Posgrado (CAP) (Universidad de la República, Uruguay), Program for the Development of Basic Sciences (PEDECIBA-Química) and Sociedad Uruguaya de Microbiología (SUM). -- Acknowledgments: The authors acknowledge Sebastian Martínez, Sandra Lupo, and Silvia Pereyra, who kindly provided the fungal strains used in this study. -- This article belongs to the Special Issue Recent Advances in Antimicrobial Materials (https://www.mdpi.com/journal/chemistry/special_issues/Antimicrobial_Material ) -- Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). -- Publisher: Multidisciplinary Digital Publishing Institute (MDPI). 520 $aABSTRACT.- Metal nanoparticles are widely studied due to their various applications, such as their potential use in the control of phytopathogens and the promotion of plant growth, with a significant impact on agriculture. Various microbial metabolites are used to reduce and stabilize metals and metal oxides to the nanoscale. In the present work, the biological synthesis of silver and copper oxide nanoparticles using Trichoderma harzianum TA2 is reported. The nanoparticles were purified and characterized with complementary methodologies to obtain information on the size, distribution, morphology, surface charge, and functional groups of the nanoparticles. The in vitro antifungal activity of the nanoparticles against pathogens of rice and wheat, as well as their effect on seed germination, were evaluated. In general, the nanoparticles showed a spherical shape, an average size of 17-26 nm, and low polydispersity. Furthermore, they showed antifungal activity at low concentrations against Sclerotium oryzae (0.140 nM), Rhizoctonia oryzae-sativae (0.140 nM), Fusarium graminearum (0.034 nM), and Pyricularia oryzae (0.034 nM). The germination of seeds treated with nanoparticles was not negatively affected. This is the first report of biogenic silver and copper oxide nanoparticles from a single strain of T.harzianum with antifungal activity against four phytopathogens of interest in Uruguay. Furthermore, the synthesis of the biogenic nanoparticles was faster and more efficient than previous reports using other fungi. In conclusion, this work reveals that biogenic metallic nanoparticles from T. harzianum TA2 can be considered as candidates for the control of phytopathogens affecting important crops.. © 2023 by the authors. 653 $aAntifungal 653 $aBiogenic nanoparticles 653 $aPartnership for the goals - Goal 17 653 $aPhytopathogens 653 $aPLATAFORMA DE BIOINSUMOS - INIA 653 $aSustainable Development Goals (SDGs) 653 $aTrichoderma 700 1 $aFACCIO, R. 700 1 $aABREO, E. 700 1 $aALBORÉS, S. 773 $tChemistry (Switzerland). 2023, 15(4): 2104-2119. https://doi.org/10.3390/chemistry5040143 -- OPEN ACCESS.
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Registro original : |
INIA Las Brujas (LB) |
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
21/06/2018 |
Tipo de producción científica : |
Artículos en Revistas Agropecuarias |
Autor : |
MIERES, J.M.; LA MANNA, A. |
Afiliación : |
JUAN MANUEL MIERES VISILLAC, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Otro problema que nos deja la seca: Intoxicación por nitratos. |
Fecha de publicación : |
2000 |
Fuente / Imprenta : |
El País Agropecuario, 2000, v. 6, no. 63, p. 25-28. |
Idioma : |
Español |
Contenido : |
Se produce una excesiva acumulación de nitratos en planta cuando la absorción del suelo es mayor que la posibilidad de ésta de sintetizarlos y convertirlos en proteina.
Estos casos se dan con altos niveles de nitratos en suelo debido a altas fertilizaciones nitrogenadas. agregados de estiércol, cultivos estresados por falta de sol y excesos de frío y, fundamentalmente, en nuestras condiciones, por sequias prolongadas que favorecen la mineralización. Este ario, luego de la sequia extrema, se repiten aún más acentuadamente 105 problemas que se presentaron en el otario del '92 en la zona del Litoral Sur del pais, que afectaron a un alto número de productores y que llevaron a publicar, en esa ocasión, una hoja de divulgación por parte del ingeniero Pigurina y la doctora Banchero (Hoja N" 28, 6/92), advirtiendo acerca del problema y dando recomendaciones. En realidad, esta intoxicación debería llamarse por nitritos y no por nitratos, ya que el problema es que en el rumen del animalias nitratos son reducidos a nitritos a una velocidad mayor que la que desarrollan los microorganismos para reducirlos a amonio; por lo tanto, tíenden a acumularse y a escapar del rumen, pasando
a la sangre y convirtiendo la hemoglobina en metaglobina, por lo que la sangre no se oxigena y en consecuencia tampoco los tejidos, lo que provoca, en casos extremos, asfixia y muerte del animal. Este proceso es muy rápido y el sintoma más visible después de muerto es el color achocolatado de la sangre. |
Palabras claves : |
GRAMÍNEAS; NITRATOS EN PLANTA. |
Asunto categoría : |
A50 Investigación agraria |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/10417/1/63.pdf
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Marc : |
LEADER 01936naa a2200157 a 4500 001 1022820 005 2018-06-21 008 2000 bl uuuu u00u1 u #d 100 1 $aMIERES, J.M. 245 $aOtro problema que nos deja la seca$bIntoxicación por nitratos. 260 $c2000 520 $aSe produce una excesiva acumulación de nitratos en planta cuando la absorción del suelo es mayor que la posibilidad de ésta de sintetizarlos y convertirlos en proteina. Estos casos se dan con altos niveles de nitratos en suelo debido a altas fertilizaciones nitrogenadas. agregados de estiércol, cultivos estresados por falta de sol y excesos de frío y, fundamentalmente, en nuestras condiciones, por sequias prolongadas que favorecen la mineralización. Este ario, luego de la sequia extrema, se repiten aún más acentuadamente 105 problemas que se presentaron en el otario del '92 en la zona del Litoral Sur del pais, que afectaron a un alto número de productores y que llevaron a publicar, en esa ocasión, una hoja de divulgación por parte del ingeniero Pigurina y la doctora Banchero (Hoja N" 28, 6/92), advirtiendo acerca del problema y dando recomendaciones. En realidad, esta intoxicación debería llamarse por nitritos y no por nitratos, ya que el problema es que en el rumen del animalias nitratos son reducidos a nitritos a una velocidad mayor que la que desarrollan los microorganismos para reducirlos a amonio; por lo tanto, tíenden a acumularse y a escapar del rumen, pasando a la sangre y convirtiendo la hemoglobina en metaglobina, por lo que la sangre no se oxigena y en consecuencia tampoco los tejidos, lo que provoca, en casos extremos, asfixia y muerte del animal. Este proceso es muy rápido y el sintoma más visible después de muerto es el color achocolatado de la sangre. 653 $aGRAMÍNEAS 653 $aNITRATOS EN PLANTA 700 1 $aLA MANNA, A. 773 $tEl País Agropecuario, 2000$gv. 6, no. 63, p. 25-28.
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