Phylogenic analysis of the M genes of influenza viruses isolated from free-flying water birds from their Northern Territory to Hokkaido, Japan

Virus Genes. 2008 Oct;37(2):144-52. doi: 10.1007/s11262-008-0248-7. Epub 2008 Jul 10.

Abstract

During 2000-2007, 218 influenza viruses of 28 different combinations of HA (H1-H13) and NA (N1-N9) subtypes were isolated from fecal samples of free-flying water birds at two distant lakes in Hokkaido, Japan. Phylogenic analysis of the matrix (M) genes of 67 strains, selected on the basis of their subtype combinations, revealed that A/duck/Hokkaido/W95/2006 (H10N8) was a reassortant whose M and NA genes [corrected] belonged to North American non-gull-avian and the other six [corrected] genes to Eurasian non-gull-avian lineages. The M genes of other 65 strains belonged to Eurasian non-gull-avian and the one to Eurasian-gull lineages. The M genes of 65 strains were grouped into three different sublineages, indicating that influenza viruses circulating in different populations of free-flying water birds have evolved independently in nature.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animal Migration*
  • Animals
  • Animals, Wild / virology*
  • Birds / virology*
  • Ducks
  • Evolution, Molecular
  • Feces / virology
  • Influenza A virus / classification*
  • Influenza A virus / genetics
  • Influenza A virus / isolation & purification*
  • Japan
  • Molecular Sequence Data
  • Northern Territory
  • Phylogeny*
  • Reassortant Viruses / classification
  • Reassortant Viruses / genetics
  • Reassortant Viruses / isolation & purification
  • Viral Matrix Proteins / genetics*
  • Viral Matrix Proteins / metabolism

Substances

  • M1 protein, Influenza A virus
  • Viral Matrix Proteins