Proteomas órgão/estados de hidratação específicos de Selaginella convoluta para investigação de estratégias metabólicas de tolerância à dessecação
Selaginella convoluta is a lycophyte native to the Caatinga biome that belongs to the group of resurrection plants. Selaginella genus is known to possess a wide diversity of chemically unique molecules, especially those that encompasses the biflavonoids and selaginellins, the latter being exclusive...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/45613 |
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| Resumo: | Selaginella convoluta is a lycophyte native to the Caatinga biome that belongs to the group of
resurrection plants. Selaginella genus is known to possess a wide diversity of chemically unique
molecules, especially those that encompasses the biflavonoids and selaginellins, the latter being
exclusive to its species. The present project aims to study the occurrence of secondary
metabolites of pharmaceutical interest in S. convoluta, based on previous proteome data
obtained from shoots and roots under desiccation and hydrated conditions, with special interest
in the study of the biosynthesis of secondary metabolites of pharmaceutical interest. The
instrumental analysis of the proteome was performed in a UPLC coupled with a linear trap
quadrupole mass spectrometer, and the treatment of the data was carried out by the PatternLab
for Proteomics software. The proteome results emphasize the preparation of the species to
tolerate desiccation through coordinated mechanisms of protection and inter-organ signaling.
Shoots stand out as the main organ in the biosynthesis of secondary metabolites, however it is
noticeable the involvement and communication of the plant as a whole in the recruitment of
enzymes present in biosynthetic pathways. In this sense, those linked to phenylpropanoid
biosynthesis suggest the production of coumarins and lignins, also showing the enzyme
polyphenol oxidase, an important regulator of the phenylpropanoid pathway, as active in the
synthesis of natural products in S. convoluta. The presented approaches contribute to the
insertion of innovative methods in the study of molecules from Caatinga species, as well as
allows the resolution of frontier issues in the study of plant species with a focus on bioactive
potential molecule biosynthesis, wich promotes this exclusive biome in the highly
biotechnological impact in Brazil. |
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