Banca de DEFESA: RAFFAEL AZEVEDO DE CARVALHO OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : RAFFAEL AZEVEDO DE CARVALHO OLIVEIRA
DATA : 17/03/2017
HORA: 14:00
LOCAL: Sala Carl Peter von Dietrich
TÍTULO:

Evolutionary Analysis of Arabidopsis thaliana Redox Gene Network Reveals Expansion of Class III Peroxidase Genes

PALAVRAS-CHAVES:

evolution; plant antioxidant; class III peroxidase; systems biology

PÁGINAS: 141
GRANDE ÁREA: Ciências Biológicas
ÁREA: Bioquímica
RESUMO:

Reactive oxygen species (ROS) are byproducts of aerobic metabolism and may cause oxidative damage to biomolecules. Plants have a complex antioxidant system, involving enzymatic and non-enzymatic compounds, to protects against ROS overproduction. The evolutionary origin of enzymatic defense in plants is not totally clear. Here we describe an antioxidant gene network for A. thaliana and investigate the evolutionary origin of this network. We gathered from public repositories 208 A. thaliana genes directly involved with ROS detoxification and proposed an A. thaliana antioxidant gene network. Using orthology information of 238 Eukaryotes from STRINGdb we have inferred the evolutionary root of each gene to reconstruct the evolutionary history of A. thaliana antioxidant gene network. We found two interconnected clusters: one formed by SOD-related, Thiol-redox, and peroxidases; and other formed entirely by class III peroxidases. Each cluster emerged in different periods of evolution and class III peroxidases are the most recent components of the network. According to our results, class III peroxidases are in expansion throughout plant evolution.

 

 

 

MEMBROS DA BANCA:
Presidente - 1507794 - RODRIGO JULIANI SIQUEIRA DALMOLIN
Interno - 1453487 - KATIA CASTANHO SCORTECCI
Externo à Instituição - MATHEUS AUGUSTO DE BITTENCOURT PASQUALI - UFCG