Du är här

Diagnosing genetically diverse avian malarial infections using mixed-sequence analysis and TA-cloning

Författare:
Publiceringsår: 2005
Språk: Engelska
Sidor: 15-23
Publikation/Tidskrift/Serie: Parasitology
Volym: 131
Nummer: 1
Dokumenttyp: Artikel
Förlag: Cambridge University Press

Sammanfattning

Birds harbouring several malarial parasites are common in the wild, and resolving such multiple infections is important for our understanding of host-parasite relationships. We propose a simple and reasonably accurate method for detecting and resolving multiple infections, based on the analysis of parasite cytochrome b DNA sequences: genetically mixed infections are first identified by double nucleotide peaks on sequence electropherograms, and later retrieved by TA-cloning. We applied this method to wild birds, and to experimentally created mixes with varying proportion of two parasites (Plasmodium spp. and Haemoproteus spp.). In general, the method was very efficient in detecting and resolving multiple infections, but some problems were encountered. Several multiple infections were erroneously scored as simple, either because one of the parasite lineages was a better target for the primers used, or because it was much more abundant in the mix. On the other hand, single nucleotide substitutions and template switching during PCR produced artificial sequences in some clones. We discuss the utility of the method, and propose a framework for its use when screening for genetically diverse avian malarial parasites.

Disputation

Nyckelord

  • Biology and Life Sciences

Övriga

Published
Yes
  • Molecular Ecology and Evolution Lab
  • ISSN: 0031-1820

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

 

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen