Banca de QUALIFICAÇÃO: VERA LUCIA PEGORINI ROCHA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : VERA LUCIA PEGORINI ROCHA
DATA : 11/02/2021
HORA: 14:00
LOCAL: Sala de vídeo conferência do Campus
TÍTULO:

Leaf anatomy and histochemistry of six species of the genus Xylopia (Annonaceae) occurring in southern Amazonia

PALAVRAS-CHAVES:

Adaptation, Mato Grosso, secondary metabolites, taxonomy

PÁGINAS: 86
GRANDE ÁREA: Ciências Biológicas
ÁREA: Botânica
SUBÁREA: Morfologia Vegetal
ESPECIALIDADE: Anatomia Vegetal
RESUMO:

As it has one of the richest biological diversity on the planet, Brazil has a vast potential for research with plants that substantiate secondary metabolites, among which we can mention the species of the genus Xylopia L. This genus produces a variety of secondary metabolites and has been investigated as potential source of compounds that exhibit a wide variety of biological properties. Secondary metabolites are not directly related to plant growth and development, but assume functional characteristics that allow them to respond to environmental stimuli; just as possible changes in the anatomy of species can perform functions that suggest a certain adaptive degree. In this sense, this study had as main objective to study species of the genus Xylopia occurring in different areas in the southern Amazon of Mato Grosso, aiming to characterize and compare anatomically and histochemically six species of the genus Xylopia (Anonaceae) occurring in the Amazon /Cerrado transition, seeking to investigate functional traits and the existence of secondary metabolites in order to relate them to environmental adaptations and contribute to the group's taxonomy, in addition to investigating possible adaptive characteristics. To carry out the study, we used leaves of tree species of the genus Xylopia, which were subjected to usual methodologies for anatomical and histochemical research. The research is organized in two chapters, the first deals with the anatomical and histochemical description and comparison of the species Xylopia amazonica, X. aromatica, X.benthamii, X. frutescens, X. neglecta and X. sericea, where it was possible to verify that the species they have shared anatomical characteristics, such as paracitic stomata, epidermal cells with straight walls, thin cuticle, bulky substomatic chambers and secretory channels; As well as the results related to histochemical tests, which also revealed similarities between species, since of the ten tests performed, five reacted positively in all species. Despite the large number of shared characteristics, it was possible to separate them into groups, where the species X. frutescens and X. sericea are the most similar among the six. The results obtained are able to assist in taxonomic studies in the circumstance in which they suggest greater kinship between the species X. frutescens and X. sericea and X. amazonica and X. aromatica.

MEMBROS DA BANCA:
Presidente - 96420004 - IVONE VIEIRA DA SILVA
Interno - 32143004 - ANA APARECIDA BANDINI ROSSI
Externo à Instituição - NORBERTO GOMES RIBEIRO JUNIOR - SEDUC - MT