Banca de DEFESA: PEDRO GONÇALVES DE MORAES NETO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : PEDRO GONÇALVES DE MORAES NETO
DATA : 31/05/2019
HORA: 09:00
LOCAL: Auditório da Coordenação de Botânica - Campus do MPEG
TÍTULO:

STRUCTURAL AND HISTOCHEMICAL ASPECTS OF Anemia SW. (ANEMIACEAE)

PALAVRAS-CHAVES:

Adaptation. Ecological anatomy. Secretory structures. Rock outcrops.

PÁGINAS: 58
GRANDE ÁREA: Ciências Biológicas
ÁREA: Botânica
RESUMO:

Anemiaceae Link is monogenic with 115 species, included in Anemia Sw., With tropical and subtropical distribution, Brazil being the main culture center with about 60 species of which are 10 timber species in Pará, occurring mainly on rocky outcrops. The work done with Anemia does not express the richness and the potential that the anatomical information can provide in front of the taxonomic and ecological diversity of the genus. Aiming to partially fill this gap, this study describes the anatomy of sterile leaves of Anemia buniifolia (Gardn.) T. Moore. Ind. HI. (T. Moore), A. elegans (Gardner) C. Presl, A. oblongifolia (Cav.) Sw., A. phyllitidis (L.) Sw., A. presliana Prantl and A. trichorhiza Gardn. Icon. PI. (Hooker) present in rocky outcrops and interpreting, in the light of ecological information of Ferns, the main adaptive characters, besides providing new data for group taxonomy. For this, herborized and fixed samples were submitted to the usual techniques of optical microscopy for structural analysis and the main classes of secondary metabolites. Among the main structural features are: distribution of stomata, presence of stegmates, mesophyll type, sheath extension, among others. Histochemical tests were also carried out on the species A. buniifolia, A. oblongifolia, A. presliana and A. trichorhiza, collected from natural populations, with positive results for phenolic compounds, alkaloids, polysaccharides and proteins, in structures such as idioblasts, secretory tissues and trichomes glandular. The results demonstrated that several structural and histochemical features present in Anemia are directly related to the reduction of water loss, having an adaptive value to extreme environments with high luminous intensity and water deficit, such as rocky outcrops. Among these, there are multifunctional features, also acting against herbivory, such as trichomes, stegmates, phenolic compounds, alkaloids and proteins. The anatomical characteristics described in this study, related to the abiotic factors, also increase the knowledge about Anemia, providing new data and interpretations for the genus.

MEMBROS DA BANCA:
Presidente - 943.759.762-68 - ANA CARLA FEIO DOS SANTOS - MPEG
Interno - 077.309.237-42 - ANDRÉ DOS SANTOS BRAGANÇA GIL - MPEG
Externo à Instituição - JEFFERSON MIRANDA COSTA - IFPA
Interno - 048.467.306-89 - PEDRO LAGE VIANA - MPEG
Externo à Instituição - SEIDEL FERREIRA DOS SANTOS - UEPA