Bayesian analysis of new and old malaria parasite DNA sequence data demonstrates the need for more phylogenetic signal to clarify the descent of <Emphasis Type="Italic">Plasmodium falciparum</Emphasis> |
| |
Authors: | S C Hagner B Misof W A Maier H Kampen |
| |
Institution: | (1) Institute for Medical Microbiology, Immunology and Parasitology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn, Germany;(2) Zoologisches Forschungsinstitut und Museum Alexander Koenig, Adenanerallee 160, 53113 Bonn, Germany |
| |
Abstract: | Molecular systematic studies published during the last 15 years to clarify the phylogenetic relationships among the malaria
parasites have led to two major hypotheses on the descent of Plasmodium falciparum: One supports an avian origin as a result of a relatively recent host switch, and another one favours the evolutionary development
of P. falciparum together with its human host from primate ancestors. In this paper, we present phylogenetic analyses of three different Plasmodium genes, the nuclear 18 small sub-unit (SSU) ribosomal ribonucleic acid (rRNA), the mitochondrial cytochrome b (cyt b) and
the plastid caseinolytic protease C (ClpC) gene, using numerous haemosporidian parasite DNA sequences obtained from the GenBank
as well as several new sequences for major malaria parasites including the avian one Plasmodium cathemerium, which has never been considered in molecular phylogenetic analyses before. Most modern and sophisticated DNA substitution
models based on Bayesian inference analysis were applied to estimate the cyt b and ClpC phylogenetic trees, whereas the 18
SSU rRNA gene was examined with regards to its secondary structure using PHASE software. Our results indicate that the data
presently available are generally neither sufficient in number nor in information to solve the problem of the phylogenetic
origin of P. falciparum. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|