Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets
Environmental stress is increasingly wearing down crop productivity. Nowadays, one of the main aims of plant research is to elucidate tolerance mechanisms to diverse stresses, in order to provide solutions by generating stress-tolerant plants. In regard with this matter, polyamine signaling pathway...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/315648 |
| Acceso en línea: | http://hdl.handle.net/10803/315648 |
| Access Level: | acceso abierto |
| Palabra clave: | Efecte de l'estrès sobre les plantes Efectos del estrés sobre las plantas Effect of stress on plants Fisiologia vegetal Fisiología vegetal Plant physiology Poliamines Poliaminas Polyamines Ciències de la Salut 58 |
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oai:www.tdx.cat:10803/315648 |
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España |
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| dc.title.none.fl_str_mv |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| title |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| spellingShingle |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets Sequera Mutiozabal, Miren Iranzu Efecte de l'estrès sobre les plantes Efectos del estrés sobre las plantas Effect of stress on plants Fisiologia vegetal Fisiología vegetal Plant physiology Poliamines Poliaminas Polyamines Ciències de la Salut 58 |
| title_short |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| title_full |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| title_fullStr |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| title_full_unstemmed |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| title_sort |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targets |
| dc.creator.none.fl_str_mv |
Sequera Mutiozabal, Miren Iranzu |
| author |
Sequera Mutiozabal, Miren Iranzu |
| author_facet |
Sequera Mutiozabal, Miren Iranzu |
| author_role |
author |
| dc.contributor.none.fl_str_mv |
Fernández Tiburcio, Antonio Fotopoulos, Vasileios Fernández Tiburcio, Antonio Universitat de Barcelona. Departament de Productes Naturals, Biologia Vegetal i Edafologia |
| dc.subject.none.fl_str_mv |
Efecte de l'estrès sobre les plantes Efectos del estrés sobre las plantas Effect of stress on plants Fisiologia vegetal Fisiología vegetal Plant physiology Poliamines Poliaminas Polyamines Ciències de la Salut 58 |
| topic |
Efecte de l'estrès sobre les plantes Efectos del estrés sobre las plantas Effect of stress on plants Fisiologia vegetal Fisiología vegetal Plant physiology Poliamines Poliaminas Polyamines Ciències de la Salut 58 |
| description |
Environmental stress is increasingly wearing down crop productivity. Nowadays, one of the main aims of plant research is to elucidate tolerance mechanisms to diverse stresses, in order to provide solutions by generating stress-tolerant plants. In regard with this matter, polyamine signaling pathway is of crucial importance. The major polyamines in plants (putrescine, spermidine and spermine) tend to accumulate in response to stress and are associated with a protective role. The trend of their accumulation is related to the stress the plant is sensing; in fact, polyamine biosynthetic pathway is activated at different levels depending on the stimulus, which gives a selective role to these molecules. Spermine, one of the higher polyamines, is not essential for plant growth; however, it is presently known that this molecule plays diverse protective roles under several stress factors and triggers signaling cascades implicated in plant defense. Therefore, research on spermine down-stream targets has become necessary towards the elucidation of plant tolerance responses. By the use of model plant Arabidopsis thaliana this study demonstrated the implication of this polycation on enhancement of anti-oxidative capacity by signaling connections to central hub metabolites for sugar, lipid and amino acid metabolism such as pyruvate or myo-Inositol, as well as its involvement on root morphology. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015 2015 2016 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion |
| format |
doctoralThesis |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10803/315648 |
| url |
http://hdl.handle.net/10803/315648 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
214 p. application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
Universitat de Barcelona |
| publisher.none.fl_str_mv |
Universitat de Barcelona |
| dc.source.none.fl_str_mv |
TDX (Tesis Doctorals en Xarxa) reponame:TDR. Tesis Doctorales en Red instname:CBUC, CESCA |
| instname_str |
CBUC, CESCA |
| reponame_str |
TDR. Tesis Doctorales en Red |
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TDR. Tesis Doctorales en Red |
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|
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|
| _version_ |
1869412516482777088 |
| spelling |
Polyamine signaling pathway during environmental stress: Metabolomic approaches to elucidate spermine down-stream targetsSequera Mutiozabal, Miren IranzuEfecte de l'estrès sobre les plantesEfectos del estrés sobre las plantasEffect of stress on plantsFisiologia vegetalFisiología vegetalPlant physiologyPoliaminesPoliaminasPolyaminesCiències de la Salut58Environmental stress is increasingly wearing down crop productivity. Nowadays, one of the main aims of plant research is to elucidate tolerance mechanisms to diverse stresses, in order to provide solutions by generating stress-tolerant plants. In regard with this matter, polyamine signaling pathway is of crucial importance. The major polyamines in plants (putrescine, spermidine and spermine) tend to accumulate in response to stress and are associated with a protective role. The trend of their accumulation is related to the stress the plant is sensing; in fact, polyamine biosynthetic pathway is activated at different levels depending on the stimulus, which gives a selective role to these molecules. Spermine, one of the higher polyamines, is not essential for plant growth; however, it is presently known that this molecule plays diverse protective roles under several stress factors and triggers signaling cascades implicated in plant defense. Therefore, research on spermine down-stream targets has become necessary towards the elucidation of plant tolerance responses. By the use of model plant Arabidopsis thaliana this study demonstrated the implication of this polycation on enhancement of anti-oxidative capacity by signaling connections to central hub metabolites for sugar, lipid and amino acid metabolism such as pyruvate or myo-Inositol, as well as its involvement on root morphology.El estrés medioambiental está afectando de forma paulatina la productividad de los cultivos. En la búsqueda de soluciones, uno de los principales objetivos de la investigación en fisiología de plantas, es dilucidar los mecanismos de tolerancia que se presentan ante diversos estreses, con la finalidad de generar plantas con fenotipos resistentes. En referencia a este asunto, las poliaminas y sus rutas señalizadoras son de importancia crucial. Las más abundantes en plantas (putrescina, espermidina y espermina) tienden a acumularse en respuesta al estrés por lo cual se les asocia a un rol protector, sin embargo, las tendencias de acumulación dependen del tipo de estrés que la planta es capaz de percibir. De hecho, su ruta biosintética se activa a diferentes niveles dependiendo del estímulo, lo cual les confiere un carácter selectivo. La Espermina (una de las poliaminas superiores) no es esencial para el crecimiento de la planta, no obstante, actualmente se sabe que esta molécula ejerce diversos roles protectores en una gran variedad de condiciones y además activa cascadas señalizadoras implicadas en la respuesta defensiva de la planta. En consecuencia, para dilucidar los mecanismos de tolerancia, se ha hecho necesario profundizar en las dianas de señalización por parte de la espermina. Empleando como modelo experimental Arabidopsis thaliana, el presente estudio ha demostrado la implicación de este policatión en el aumento de la capacidad anti-oxidativa a través de conexiones con metabolitos centrales en el metabolismo de azucares, lípidos y aminoácidos como es el caso del piruvato y el mio-Inositol, así como también, la implicación de esta poliamina en la morfología y ramificación de las raíces, reforzando la noción de implicación esencial por parte de esta poliamina, en la fisiología del estrés en plantas.Universitat de BarcelonaFernández Tiburcio, AntonioFotopoulos, VasileiosFernández Tiburcio, AntonioUniversitat de Barcelona. Departament de Productes Naturals, Biologia Vegetal i Edafologia201520162015info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersion214 p.application/pdfapplication/pdfhttp://hdl.handle.net/10803/315648TDX (Tesis Doctorals en Xarxa)reponame:TDR. Tesis Doctorales en Redinstname:CBUC, CESCAInglésADVERTIMENT. L'accés als continguts d'aquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials d'investigació i docència en els termes establerts a l'art. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix l'autorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No s'autoritza la seva reproducció o altres formes d'explotació efectuades amb finalitats de lucre ni la seva comunicació pública des d'un lloc aliè al servei TDX. Tampoc s'autoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs.info:eu-repo/semantics/openAccessoai:www.tdx.cat:10803/3156482026-06-14T12:46:07Z |
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15,300719 |