Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB
ilustraciones, diagramas
- Autores:
-
Serrato Gutiérrez, Mayling Gisette
- Tipo de recurso:
- Fecha de publicación:
- 2023
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/85381
- Palabra clave:
- 570 - Biología::575 - Partes específicas de y sistemas fisiológicos en plantas
630 - Agricultura y tecnologías relacionadas::631 - Técnicas específicas, aparatos, equipos, materiales
Estrés de sequia
Zea mays
Biotecnología
drought stress
Zea mays
biotechnology
Sequía
Polietilenglicol
Ajuste osmótico
Antioxidantes
Caribe seco
Zea mays
Drought
Polyethylene glycol
Antioxidants
Osmotic adjustment
Dry caribbean
- Rights
- openAccess
- License
- Atribución-NoComercial-SinDerivadas 4.0 Internacional
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| dc.title.spa.fl_str_mv |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| dc.title.translated.eng.fl_str_mv |
Mitigating water deficit stress in forage maize through the use of PGPB |
| title |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| spellingShingle |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB 570 - Biología::575 - Partes específicas de y sistemas fisiológicos en plantas 630 - Agricultura y tecnologías relacionadas::631 - Técnicas específicas, aparatos, equipos, materiales Estrés de sequia Zea mays Biotecnología drought stress Zea mays biotechnology Sequía Polietilenglicol Ajuste osmótico Antioxidantes Caribe seco Zea mays Drought Polyethylene glycol Antioxidants Osmotic adjustment Dry caribbean |
| title_short |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| title_full |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| title_fullStr |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| title_full_unstemmed |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| title_sort |
Mitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPB |
| dc.creator.fl_str_mv |
Serrato Gutiérrez, Mayling Gisette |
| dc.contributor.advisor.spa.fl_str_mv |
Uribe Vélez, Daniel Estrada Bonilla, Germán Andrés |
| dc.contributor.author.spa.fl_str_mv |
Serrato Gutiérrez, Mayling Gisette |
| dc.contributor.researchgroup.spa.fl_str_mv |
Microbiologia Agricola |
| dc.subject.ddc.spa.fl_str_mv |
570 - Biología::575 - Partes específicas de y sistemas fisiológicos en plantas 630 - Agricultura y tecnologías relacionadas::631 - Técnicas específicas, aparatos, equipos, materiales |
| topic |
570 - Biología::575 - Partes específicas de y sistemas fisiológicos en plantas 630 - Agricultura y tecnologías relacionadas::631 - Técnicas específicas, aparatos, equipos, materiales Estrés de sequia Zea mays Biotecnología drought stress Zea mays biotechnology Sequía Polietilenglicol Ajuste osmótico Antioxidantes Caribe seco Zea mays Drought Polyethylene glycol Antioxidants Osmotic adjustment Dry caribbean |
| dc.subject.agrovoc.spa.fl_str_mv |
Estrés de sequia Zea mays Biotecnología |
| dc.subject.agrovoc.eng.fl_str_mv |
drought stress Zea mays biotechnology |
| dc.subject.proposal.spa.fl_str_mv |
Sequía Polietilenglicol Ajuste osmótico Antioxidantes Caribe seco |
| dc.subject.proposal.other.fl_str_mv |
Zea mays |
| dc.subject.proposal.eng.fl_str_mv |
Drought Polyethylene glycol Antioxidants Osmotic adjustment Dry caribbean |
| description |
ilustraciones, diagramas |
| publishDate |
2023 |
| dc.date.issued.none.fl_str_mv |
2023-07 |
| dc.date.accessioned.none.fl_str_mv |
2024-01-19T14:59:46Z |
| dc.date.available.none.fl_str_mv |
2024-01-19T14:59:46Z |
| dc.type.spa.fl_str_mv |
Trabajo de grado - Maestría |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/masterThesis |
| dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
| dc.type.content.spa.fl_str_mv |
Text |
| dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/TM |
| status_str |
acceptedVersion |
| dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/85381 |
| dc.identifier.instname.spa.fl_str_mv |
Universidad Nacional de Colombia |
| dc.identifier.reponame.spa.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
| dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.unal.edu.co/ |
| url |
https://repositorio.unal.edu.co/handle/unal/85381 https://repositorio.unal.edu.co/ |
| identifier_str_mv |
Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia |
| dc.language.iso.spa.fl_str_mv |
spa |
| language |
spa |
| dc.relation.indexed.spa.fl_str_mv |
Agrosavia Agrovoc |
| dc.relation.references.spa.fl_str_mv |
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Atribución-NoComercial-SinDerivadas 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Uribe Vélez, Danielc0920b12ebab2c68a158bdb7410eaee1Estrada Bonilla, Germán Andrés714d3baacc98fc3b38b73b59433dbd41Serrato Gutiérrez, Mayling Gisette7bf664e12ad4e412c20d16a07b0e1b31Microbiologia Agricola2024-01-19T14:59:46Z2024-01-19T14:59:46Z2023-07https://repositorio.unal.edu.co/handle/unal/85381Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, diagramasLa escasez mundial de agua disponible para el riego representa una de las principales amenazas para la agricultura y la seguridad alimentaria. Se espera que la situación se agrave por períodos de sequía más recurrentes debido al cambio climático. Fortalecer la tolerancia de los cultivos a condiciones deficientes de agua y mejorar su eficiencia en el uso del recurso hídrico se convierte en uno de los mayores desafíos actuales. Las PGPB (Plant Growth-Promoting Bacteria) se presentan como una alternativa viable para reducir los efectos deletéreos de la sequía. Este estudio tuvo como objetivo evaluar el potencial de diez cepas de PGPB de los géneros Pseudomonas spp., Bacillus spp. y Lysinibacillus sp. pertenecientes a las colecciones del Instituto de Biotecnología de la Universidad Nacional (IBUN) y la Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA), en la mitigación del déficit hídrico en plantas de maíz. Para ello, se realizaron ensayos en invernadero (Bogotá) y casa de malla (Cesar) utilizando inóculos individuales. Las plantas se cultivaron en condiciones de riego durante 20 días y luego se sometieron a 11 días de déficit hídrico. Después del período de estrés, se determinaron cambios en la biomasa seca (aérea y radical), contenido relativo hídrico (RWC), contenido de pigmentos fotosintéticos, acumulación de osmolitos y actividad enzimática antioxidante (GR y APX). La inoculación de las cepas XT14, MT1C8, PSL63 y MGC9 demostró atenuar los efectos perjudiciales de la sequía en el crecimiento del maíz, aumentando la biomasa seca aérea entre un 22% y 51% frente al control de estrés. Otras cepas como PSL80 y XT17 mejoraron el estado hídrico de la planta, manteniendo el RWC entre un 94% y 98%. Esto se logró principalmente mediante la modulación específica de cada cepa en la acumulación de osmolitos, la actividad antioxidante y el contenido de clorofila en las hojas. Posteriormente, las cepas PSL80, PSL63, XT14 y XT17 fueron seleccionadas para estudios adicionales a nivel de laboratorio, donde se determinaron características de promoción del crecimiento y tolerancia al estrés osmótico. Se observó que las cepas eran tolerantes al estrés osmótico inducido por la presencia de Polietilenglicol (PEG) 6000 en el medio de crecimiento y poseían múltiples rasgos de promoción, como la capacidad para sintetizar compuestos de tipo indol y exopolisacáridos (EPS), solubilizar y mineralizar fósforo, y establecerse en las raíces incluso en condiciones de estrés. Estos atributos podrían guardar relación con los beneficios observados en las plantas, al aumentar la biodisponibilidad de nutrientes, mantener la humedad en la rizósfera y estimular hormonalmente el crecimiento. Se concluyó que las cepas de Pseudomonas PSL80 y PSL63, y de Bacillus XT14, poseen potencial para mitigar el estrés por déficit hídrico en las plantas de maíz. (Texto tomado de la fuente).Global water scarcity for irrigation represents one of the main threats to agriculture and food security. It is expected to worsen due to more frequent drought periods resulting from climate change. Strengthening crop tolerance to water-deficient conditions and improving water use efficiency have become some of the greatest challenges today. Plant Growth-Promoting Bacteria (PGPB) emerge as a viable alternative to reduce the deleterious effects of drought. This study aimed to evaluate the potential of ten PGPB strains from the genera Pseudomonas spp., Bacillus spp., and Lysinibacillus sp., collected from Instituto de Biotecnología de la Universidad Nacional (IBUN) and Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA), in mitigating water deficit in maize plants. Greenhouse (Bogotá) and mesh house (Cesar) assays were conducted using individual inocula. The plants were subjected to 20 days of watering and then exposed to 11 days of water deficit. After the stress period, changes in dry biomass (aboveground and root), relative water content (RWC), photosynthetic pigment content, osmolyte accumulation, and antioxidant enzyme activity (GR and APX) were determined. The inoculation of XT14, MT1C8, PSL63, and MGC9 strains demonstrated attenuation of detrimental effects of drought on maize growth, increasing stem dry biomass by 22% to 51% compared to the stressed control. Other strains like PSL80 and XT17 improved the plant's water status, maintaining RWC between 94% and 98%. This was achieved mainly through specific modulation by each strain in osmolyte accumulation, antioxidant activity, and chlorophyll content in the leaves. Subsequently, strains PSL80, PSL63, XT14, and XT17 were selected for additional laboratory-level studies, where growth promotion characteristics and tolerance to osmotic stress were determined. These strains were found to be osmotolerant induced by Polyethylene glycol (PEG) 6000 in the growth medium and had multiple promotion traits, such as the ability to synthesize indole-type compounds and exopolysaccharides (EPS), solubilize and mineralize phosphorus, establish themselves in the roots even under stressful conditions. These attributes may be related to the observed benefits in plants by increasing nutrient availability, maintaining moisture in the rhizosphere, and hormonally stimulating growth. It was concluded that the Pseudomonas PSL80 and PSL63 strains, and the Bacillus XT14 strain, have the potential to mitigate water deficit stress in maize plants.MaestríaMagíster en Ciencias - MicrobiologíaMicrobiologia agricolaxvi, 140 páginasapplication/pdfspaUniversidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - MicrobiologíaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá570 - Biología::575 - Partes específicas de y sistemas fisiológicos en plantas630 - Agricultura y tecnologías relacionadas::631 - Técnicas específicas, aparatos, equipos, materialesEstrés de sequiaZea maysBiotecnologíadrought stressZea maysbiotechnologySequíaPolietilenglicolAjuste osmóticoAntioxidantesCaribe secoZea maysDroughtPolyethylene glycolAntioxidantsOsmotic adjustmentDry caribbeanMitigación del estrés por déficit hídrico en maíz forrajero mediante el uso de PGPBMitigating water deficit stress in forage maize through the use of PGPBTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMAgrosaviaAgrovocAbdelaal, K., Alkahtani, M., Attia, K., Hafez, Y., Király, L., & Künstler, A. (2021). The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants. Biology, 10(6), 520. https://doi.org/10.3390/BIOLOGY10060520Abrahám, E., Hourton-Cabassa, C., Erdei, L., & Szabados, L. (2010). Methods for determination of proline in plants. Methods in Molecular Biology (Clifton, N.J.), 639, 317–331. https://doi.org/10.1007/978-1-60761-702-0_20/COVER/Ahmad Ansari, F., Ahmad, I., & Pichtel, J. (2023). Synergistic effects of biofilm-producing PGPR strains on wheat plant colonization, growth and soil resilience under drought stress. Saudi Journal of Biological Sciences, 30(6), 103664. https://doi.org/10.1016/J.SJBS.2023.103664Akhtar, S. S., Amby, D. B., Hegelund, J. N., Fimognari, L., Großkinsky, D. K., Westergaard, J. C., Müller, R., Moelbak, L., Liu, F., & Roitsch, T. (2020). Bacillus licheniformis FMCH001 Increases Water Use Efficiency via Growth Stimulation in Both Normal and Drought Conditions. 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Acta Physiologiae Plantarum, 33(1), 203–209. https://doi.org/10.1007/s11738-010-0539-1InvestigadoresPúblico generalLICENSElicense.txtlicense.txttext/plain; charset=utf-85879https://repositorio.unal.edu.co/bitstream/unal/85381/1/license.txteb34b1cf90b7e1103fc9dfd26be24b4aMD51ORIGINAL1144051124.2023.pdf1144051124.2023.pdfTesis de Maestría en Ciencias - Microbiologíaapplication/pdf4309841https://repositorio.unal.edu.co/bitstream/unal/85381/2/1144051124.2023.pdf0ed319920e300f3502dac62455cdca6bMD52THUMBNAIL1144051124.2023.pdf.jpg1144051124.2023.pdf.jpgGenerated Thumbnailimage/jpeg4394https://repositorio.unal.edu.co/bitstream/unal/85381/3/1144051124.2023.pdf.jpgc133cb270a8cc34832739ff748f9223dMD53unal/85381oai:repositorio.unal.edu.co:unal/853812024-01-19 23:03:45.465Repositorio Institucional Universidad Nacional de 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