Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Morphometric and genetic analysis of Arcella intermedia and Arcella intermedia laevis (Amoebozoa, Arcellinida) illuminate phenotypic plasticity in microbial eukaryotes

Texto completo
Autor(es):
Porfirio-Sousa, Alfredo L. ; Ribeiro, Giulia M. ; Lahr, Daniel J. G.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: EUROPEAN JOURNAL OF PROTISTOLOGY; v. 58, p. 187-194, APR 2017.
Citações Web of Science: 1
Resumo

Testate amoebae are eukaryotic microorganisms characterized by the presence of an external shell (test). The shell morphology is used as a diagnostic character, but discordance between morphological and molecular data has been demonstrated in groups of arcellinids (Amoebozoa), one of the principal groups of testate amoebae. Morphology of the test is supposed to differentiate genera and species and it is applied in ecological, monitoring and paleontological studies. However, if phenotype does not reflect genotype, conclusions in these types of studies become severely impaired. The objective of this work is to evaluate the morphometrical and morphological variation of the closely related and morphologically similar taxa Arcella intermedia laevis Tsyganov and Mazei, 2006 and Arcella intermedia (Deflandre 1928) Tsyganov and Mazei, 2006 in nature and in cultured individuals and see how these are correlated with molecular data. Our results demonstrate that phenotypic plasticity in Arcella intermedia make morphological distinctions impossible in both taxa. Arcella intermedia and Arcella intermedia laevis are molecularly identical for SSU rDNA and a mitochondrial molecular marker (NAD9/7). We conclude that morphological techniques alone cannot identify phenotypic plasticity from natural populations. More work is clearly needed to better understand the morphological, morphometric and molecular variability in these organisms. (C) 2016 Elsevier GmbH. All rights reserved. (AU)

Processo FAPESP: 13/25729-3 - Variação morfológica temporal de tecamebas (Arcella vulgaris e Arcella gibbosa) em populações naturais e linhagens clonais
Beneficiário:Alfredo Leonardo Porfirio de Sousa
Linha de fomento: Bolsas no Brasil - Iniciação Científica