Banca de DEFESA: FERNANDA DANIELLE DE SOUSA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FERNANDA DANIELLE DE SOUSA
DATE: 17/09/2021
TIME: 09:00
LOCAL: Defesa Online
TITLE:

The complete mitochondrial genome of the Hancornia speciosa Gomes and evolutive analysis in Apocynaceae

KEY WORDS:

Hancornia speciosa. Mitochondrial genome. Evolution.

PAGES: 60
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitotecnia
SPECIALTY: Melhoramento Vegetal
SUMMARY:

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Hancornia is a monotypic genus that belongs to the Apocynaceae family, its only species is an H. speciosa Gomes, also known as mangaba. It is a fruit tree, native to Brazil, appreciated for its sweet and slightly acidic flavor that makes it quite characteristic. In addition to its ecological and industrial importance, it is a source of income for agro-extractivists. The mitochondrial genome of plants has important evolutionary characteristics, such as the large size of intergenic spacers and a large number of rearrangements, and has been studied in many groups of plants. In order to understand the phylogenetic relationships, evolutionary aspects and contribute to research on plant breeding, the mitochondrial genome of Hancornia speciosa was sequenced by Next Generation Sequencing (NGS). And through the de novo assembly and union of contigs, the complete mitochondrial genome was obtained with a size of 741,811 bp in length and 63 annotated genes, becoming the longest reported in Apocynaceae. In summary, we demonstrate: (1) the first mitochondrial genome of Hancornia speciosa; (2) The incorporation of chloroplast DNA into the mitochondrial genome in Hancornia speciosa is smaller than Rhazya stricta, Hoya lithophytica and Asclepias syriaca and its expansion may be associated with recombination events and increase in the intergenic region; (3) The synteny between H. speciosa and Rhazya stricta, which belong to the Rauvolfioideae subfamily, and between Hoya lithophytica and Asclepias syriaca, which belong to the Asclepiadoideae subfamily, show remarkable rearrangements; (4) The association of data obtained between mitochondrial rearrangements and plastid nucleotide sequences reveals that the closer genomes share more regions in common. Comparative analyzes show the remarkable diversity of the mitochondrial genome already reported in angiosperms, which shows high conservation of genes in their functioning and high structural plasticity.

BANKING MEMBERS:
Presidente - 2380775 - CICERO CARLOS DE SOUZA ALMEIDA
Interno - 3073207 - ANDRE SECO MARQUES DA SILVA
Externo à Instituição - LUIS GUSTAVO RODRIGUES SOUZA - UFPE