Banca de DEFESA: ALEXANDRE PEREIRA DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ALEXANDRE PEREIRA DA SILVA
DATA : 28/02/2020
HORA: 14:00
LOCAL: SALA 01 DA COORDENAÇÃO DE BOTÂNICA (CAMPUS-MPEG)
TÍTULO:

"Conidial fungi associated with peach palm (Bactris gasipaes Kunth) in planting areas Eastern Amazonia, Brazil"

PALAVRAS-CHAVES:

Arecaceae, Ascomycota, Decomposers, Microfungi, Taxonomy

PÁGINAS: 92
GRANDE ÁREA: Ciências Biológicas
ÁREA: Botânica
RESUMO:

Conidial fungi are important components of the food chain acting as parasites of plants and animals, endophytic in plant tissues and decomposers, being one of the first colonizers of litter. In Brazil, there are still few data available on the presence of these fungi in plantation areas of economic interest. Thus, the aim of this study was to investigate the decomposing conidial fungi associated with individuals from Bactris gasipaes Kunth (pupunheira) in planted areas established in the state of Pará, in addition to evaluating the richness and species composition in these areas. Four collections were carried out between September / 2018 and September / 2019. Decaying sheaths, leaflets, petioles and racks were collected from 15 individuals in each area, totaling 180 samples. The samples were submitted to the washing technique under running water and kept in a humid chamber for up to 45 days. In parallel, leaflets and live leaf rakes were also collected from the same 15 individuals to assess the presence of pathogens. These samples were kept in a humid chamber for up to five days. The reproductive structures of the fungi were visualized in a stereomicroscope and mounted on semi-permanent slides for morphological analysis and identification. In total, 103 species of conidial fungi were identified, distributed in 78 genera and 31 families. Most fungi occurred on lignified substrates, especially the sheath, with sporadic frequency. Species richness varied significantly between the analyzed substrates, while the composition differed between areas, substrates and collection periods. The data show a high richness of conidial fungi acting as decomposers of B. gasipaes leaves in plantation areas. This study expanded the knowledge of fungi present in the Amazon region, with ten new records for the state of Pará, including five for the Brazilian Amazon, one for Brazil (Didymostilbe capsici), one for South America (Ellisembia antillana) and two for the American continent (Aculeata aquatica and Ellisembia tarennae).

MEMBROS DA BANCA:
Externo ao Programa - 1089736 - ADRIENE MAYRA DA SILVA SOARES
Externo à Instituição - ALCINDO DA SILVA MARTINS JUNIOR - UEPA
Externo à Instituição - ANTONIO HERNÁNDEZ GUTIÉRREZ - UFPA
Presidente - 842.179.442-68 - JOSIANE SANTANA MONTEIRO - MPEG
Externo à Instituição - PRISCILA SANJUAN DE MEDEIROS SARMENTO - ITV