Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico

Perennial ryegrass is a forage commonly used in template regions of Colombia for livestock feeding. It has high nutritional values but needs large amounts of water to achieve an optimal growth. The aim of this work was to determine if the inoculation of plant growth-promoting bacteria (PGPB), indivi...

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Cortés Patiño, Sandra Lucía
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Work document
Fecha de publicación:
2020
Institución:
Universidad Nacional de Colombia
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Universidad Nacional de Colombia
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spa
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oai:repositorio.unal.edu.co:unal/77940
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https://repositorio.unal.edu.co/handle/unal/77940
Palabra clave:
570 - Biología
déficit hídrico
promoción de crecimiento vegetal
bacterias endófitas
water deficit
plant growth-promotion
endophytic bacteria
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id UNACIONAL2_12bcb0e9ad669e40101e820fd7fb607b
oai_identifier_str oai:repositorio.unal.edu.co:unal/77940
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
title Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
spellingShingle Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
570 - Biología
déficit hídrico
promoción de crecimiento vegetal
bacterias endófitas
water deficit
plant growth-promotion
endophytic bacteria
title_short Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
title_full Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
title_fullStr Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
title_full_unstemmed Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
title_sort Efecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídrico
dc.creator.fl_str_mv Cortés Patiño, Sandra Lucía
dc.contributor.advisor.spa.fl_str_mv Estrada Bonilla, Germán Andrés
Alvarez Flórez, Fagua
dc.contributor.author.spa.fl_str_mv Cortés Patiño, Sandra Lucía
dc.contributor.researchgroup.spa.fl_str_mv Sistemas Agropecuarios Sostenibles
dc.subject.ddc.spa.fl_str_mv 570 - Biología
topic 570 - Biología
déficit hídrico
promoción de crecimiento vegetal
bacterias endófitas
water deficit
plant growth-promotion
endophytic bacteria
dc.subject.proposal.spa.fl_str_mv déficit hídrico
promoción de crecimiento vegetal
bacterias endófitas
dc.subject.proposal.eng.fl_str_mv water deficit
plant growth-promotion
endophytic bacteria
description Perennial ryegrass is a forage commonly used in template regions of Colombia for livestock feeding. It has high nutritional values but needs large amounts of water to achieve an optimal growth. The aim of this work was to determine if the inoculation of plant growth-promoting bacteria (PGPB), individually or in dual inoculations, can help to improve the response of this grass to water deficit. First, an assay was performed to select the PGPB that could influence biomass production under 10 days of water deficit. Three co-inoculations were selected: 1) Herbaspirillum sp. AP02 and Herbaspirillum sp. AP21; 2) Herbaspirillum sp AP02. and Pseudomonas sp. N7; and 3) Herbaspirillum sp. AP21 and Azospirillum sp. D7. In vitro assays suggested that these bacteria can colonize ryegrass internal tissues and improve seedlings growth under simulated water deficit (p<0.05). Plant growth-promoting activities evaluation showed an increase in indolic compounds for some dual inoculations, and a negative effect in exopolysaccharide production (p<0.05). Finally, a greenhouse experiment was performed to test the ability of these bacteria to modify some physiological, biochemical and morphological traits of this grass under water deficit. The bacteria had an effect in shoot biomass production, stomatal conductance, proline accumulation and chlorophyll pigments during the days of water deficit (p<0.05). They also improved leaves water status after rehydration, about 12% higher than the control. These results might be the first step to find a PGPB consortium that can help improve the response of ryegrass pastures to water deficit.
publishDate 2020
dc.date.accessioned.spa.fl_str_mv 2020-08-05T15:51:04Z
dc.date.available.spa.fl_str_mv 2020-08-05T15:51:04Z
dc.date.issued.spa.fl_str_mv 2020-01-18
dc.type.spa.fl_str_mv Documento de trabajo
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/workingPaper
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_8042
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/WP
format http://purl.org/coar/resource_type/c_8042
status_str acceptedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/77940
url https://repositorio.unal.edu.co/handle/unal/77940
dc.language.iso.spa.fl_str_mv spa
language spa
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de ColombiaAcceso abiertohttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Estrada Bonilla, Germán Andrésfb347238-7430-473b-8c4f-8a251902128d-1Alvarez Flórez, Fagua2dcb03fe-84cf-4e09-9f87-8ecaac7b514f-1Cortés Patiño, Sandra Lucía7d8e5ad2-5858-476e-a175-c024b604c485Sistemas Agropecuarios Sostenibles2020-08-05T15:51:04Z2020-08-05T15:51:04Z2020-01-18https://repositorio.unal.edu.co/handle/unal/77940Perennial ryegrass is a forage commonly used in template regions of Colombia for livestock feeding. It has high nutritional values but needs large amounts of water to achieve an optimal growth. The aim of this work was to determine if the inoculation of plant growth-promoting bacteria (PGPB), individually or in dual inoculations, can help to improve the response of this grass to water deficit. First, an assay was performed to select the PGPB that could influence biomass production under 10 days of water deficit. Three co-inoculations were selected: 1) Herbaspirillum sp. AP02 and Herbaspirillum sp. AP21; 2) Herbaspirillum sp AP02. and Pseudomonas sp. N7; and 3) Herbaspirillum sp. AP21 and Azospirillum sp. D7. In vitro assays suggested that these bacteria can colonize ryegrass internal tissues and improve seedlings growth under simulated water deficit (p<0.05). Plant growth-promoting activities evaluation showed an increase in indolic compounds for some dual inoculations, and a negative effect in exopolysaccharide production (p<0.05). Finally, a greenhouse experiment was performed to test the ability of these bacteria to modify some physiological, biochemical and morphological traits of this grass under water deficit. The bacteria had an effect in shoot biomass production, stomatal conductance, proline accumulation and chlorophyll pigments during the days of water deficit (p<0.05). They also improved leaves water status after rehydration, about 12% higher than the control. These results might be the first step to find a PGPB consortium that can help improve the response of ryegrass pastures to water deficit.El ryegrass perenne es un pasto comúnmente utilizado para alimentación ganadera en el altiplano cundiboyacense. Cuenta con buenas cualidades nutricionales, pero requiere altas cantidades de agua para un óptimo desarrollo. El objetivo de este trabajo fue evaluar si el uso de bacterias promotoras de crecimiento vegetal (PGPB), en forma individual o en coinoculaciones duales, mejora la respuesta de este pasto al déficit hídrico. Se realizó un ensayo inicial con 17 tratamientos y, luego de 10 días sin agua, se seleccionaron tres coinoculaciones debido a su capacidad promotora de crecimiento vegetal (p<0.05): 1) Herbaspirillum sp. AP02 y Herbaspirillum sp. AP21, 2) Herbaspirillum sp. AP02 y Pseudomonas sp. N7, y 3) Herbaspirillum sp. AP21 y Azospirillum sp. D7. Ensayos in vitro con estas bacterias sugieren su capacidad de colonización de tejidos vegetales y de mejorar el desarrollo de plántulas bajo déficit hídrico (p<0.05). En algunas coinoculaciones aumentó la producción de compuestos indólicos in vitro y disminuyó la producción de exopolisacáridos (p<0.05). Finalmente, se realizó una evaluación en invernadero de la capacidad de estas coinoculaciones de modificar algunas respuestas fisiológicas, bioquímicas y morfológicas de este pasto al déficit hídrico. Las bacterias mostraron un efecto en la biomasa, conductancia estomática, acumulación de prolina y pigmentos fotosintéticos durante los días de déficit hídrico (p<0.05). Además, mejoraron el estado hídrico foliar luego de la rehidratación, 12% más que el testigo. Estos resultados sugieren que el uso de coinoculaciones de PGPB como una potencial estrategia para mejorar la resistencia del ryegrass a condiciones de déficit hídrico.Corporación Colombiana de Investigación AgropecuariaLínea de Investigación: Interacción planta-microorganismoMaestría89application/pdfspa570 - Biologíadéficit hídricopromoción de crecimiento vegetalbacterias endófitaswater deficitplant growth-promotionendophytic bacteriaEfecto de la inoculación de bacterias promotoras de crecimiento vegetal en pasto Ryegrass perenne sometido a déficit hídricoDocumento de trabajoinfo:eu-repo/semantics/workingPaperinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_8042Texthttp://purl.org/redcol/resource_type/WPBogotá - Ciencias - Maestría en Ciencias - BiologíaUniversidad Nacional de Colombia - Sede BogotáAhmad, Maqshoof, Zahir A. 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Groppa. 2011. “Response to Saline Stress and Aquaporin Expression in Azospirillum- Inoculated Barley Seedlings.” Applied Microbiology and Biotechnology 90 (4): 1389–97. https://doi.org/10.1007/s00253-011-3162-1ORIGINAL1090424157_Cortés Patiño_Sandra Lucía_Maestría.pdf1090424157_Cortés Patiño_Sandra Lucía_Maestría.pdfapplication/pdf1301881https://repositorio.unal.edu.co/bitstream/unal/77940/1/1090424157_Cort%c3%a9s%20Pati%c3%b1o_Sandra%20Luc%c3%ada_Maestr%c3%ada.pdf14a56cb0a67c42cff4d357f3e201a269MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-83991https://repositorio.unal.edu.co/bitstream/unal/77940/2/license.txt6f3f13b02594d02ad110b3ad534cd5dfMD52CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8701https://repositorio.unal.edu.co/bitstream/unal/77940/3/license_rdf42fd4ad1e89814f5e4a476b409eb708cMD53THUMBNAIL1090424157_Cortés Patiño_Sandra Lucía_Maestría.pdf.jpg1090424157_Cortés Patiño_Sandra Lucía_Maestría.pdf.jpgGenerated 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