Análisis funcional del factor de transcripción ASR1 desde una perspectiva metabólica, fisiológica y molecular en plantas de tabaco y tomate
The Asr (ABA, stress, ripening) gene family is involved in the general stress response\npathways and in the control of hexose transport. To functionally study the paralogue ASR1\nin Solanaceae, over-expressing and silenced tobacco and tomato plants were evaluated\nfrom a metabolic, physiological and...
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| Formato: | Tesis doctoral acceptedVersion |
| Lenguaje: | Español |
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Facultad de Farmacia y Bioquímica
2014
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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=posgraafa&cl=CL1&d=HWA_1384 http://repositoriouba.sisbi.uba.ar/gsdl/collect/posgraafa/index/assoc/HWA_1384.dir/1384.PDF |
| Aporte de: |
| Sumario: | The Asr (ABA, stress, ripening) gene family is involved in the general stress response\npathways and in the control of hexose transport. To functionally study the paralogue ASR1\nin Solanaceae, over-expressing and silenced tobacco and tomato plants were evaluated\nfrom a metabolic, physiological and molecular perspective. Silenced tobacco plants show\nalterations in leaf glucose levels and in the hexose transporter Ht1 mRNA levels. These\nplants also show alterations in ABA and gibberellin levels. On the contrary, the main\nmetabolic effect in tomato fruits is on the amino acid metabolism. The expression levels of\nthe genes related to the stress response pathway in the tomato fruits of the silenced lines\nsuggest that ASR1 represses that pathway in that tissue. Evidence also shows that ASR1 is\ninvolved in the cell wall metabolism and in the cytokinin pathway in tomato fruits. In\nconclusion, ASR1 is involved in the primary metabolism and in the hormonal and stress\nresponse pathways in the studied Solanaceae. |
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