Banca de DEFESA: BEATRIZ VALENTE MIGLIO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : BEATRIZ VALENTE MIGLIO
DATE: 28/04/2022
TIME: 09:00
LOCAL: Google Meet
TITLE:

Conidial fungi associated with leaf litter of Euterpe oleracea Mart. in three areas of Pará State, Eastern Brazilian Amazon

KEY WORDS:

Arecaceae, Ascomycota, hyphomycetes, microfungi, taxonomy.

PAGES: 94
BIG AREA: Ciências Biológicas
AREA: Botânica
SUMMARY:

Conidial fungi are important decomposers agents present in the trophic chain, acting to break down organic debris, being one of its first colonizers; they also act as parasites in plants and animals and endophytes in plant tissues. Therefore, the objective of this work was to carry out a taxonomic study of conidial fungi (Ascomycota) associated with decomposing parts of leaf litter of Euterpe oleracea Mart. in three areas in the eastern Amazon, Pará, Brazil. Two collections were carried out in December/2020 and June/2021, where 15 individuals of E. oleracea were selected per area and samples of decomposing substrates were collected (sheaths, bunches, leaflets, petioles, rachis), totaling 225 samples. The samples were submitted to the washing technique in running water and, later, conditioned in a humid chamber for up to 45 days. The reproductive structures of the fungi were visualized under a stereomicroscope and mounted on semi-permanent slides for morphological analysis and identification. In total, 68 species of conidial fungi were identified, distributed in 55 genera, 23 families, 15 orders, and four classes. Most fungi occurred on lignified substrates such as sheaths, rachis, and petioles. The data indicate a high diversity of conidial fungi acting as decomposers of E. oleracea substrates in forest and plantation areas. This study expanded the knowledge of fungi present in the Amazon region, with seven new records for the Brazilian Amazon (Arachnophora polybrachiata, Dictyosporium araucariae, Dictyosporium tetrasporum, Ellisembia bambusicola, Parasympodiella lauri, Penzigomyces australiensis, and Sporidesmiella novae-zelandiae, three for Brazil (Mycelephas robustus, Parasympodiella eucalypti, and Polytretophora calcarata) and four for the American Continent (Acrodictys balladynae, Didymobotryum korthalsiae, Melanographium laxum, and Wiesneriomyces conjunctosporus), in addition to the description of a new species (Anaexserticlava sp. nov.).

BANKING MEMBERS:
Interna - 1089736 - ADRIENE MAYRA DA SILVA SOARES
Externo à Instituição - ANTONIO HERNÁNDEZ GUTIÉRREZ - UFPA
Presidente - 842.179.442-68 - JOSIANE SANTANA MONTEIRO - MPEG
Externo à Instituição - LUÍS FERNANDO PASCHOLATI GUSMÃO - UEFS
Externa à Instituição - PATRÍCIA OLIVEIRA FIUZA - UFRN