Origin and diversification of endomycorrhizal fungi and coincidence with vascular land plants

AMONG the Eukaryota, the true fungi comprise four divisions that constitute a natural group which is thought to have diverged about 1 billion years ago, believed to be the time of divergence between metaphyta and metazoa lineages1

Luc Simon; Jean Bousquet; Roger C. Lévesque; Maurice Lalonde

2003

Scholarcy highlights

  • AMONG the Eukaryota, the true fungi comprise four divisions that constitute a natural group which is thought to have diverged about 1 billion years ago, believed to be the time of divergence between metaphyta and metazoa lineages1
  • The endosymbionts responsible for the most prevalent plant root symbiosis, the vesicular–arbuscular mycorrhizae or, more appropriately, arbuscular mycorrhizae, comprise 130 species of fungi classified in the Zygomycotina, order Glomales
  • The arbuscular endomycorrhizae are considered to be ecologically important for most vascular plants in view of their beneficial effects on plant growth and survival
  • We obtain approximate dates for the divergence of major branche's on the phylogenetic tree. These include an estimate for the origin of VAM-like fungi of 353462 Myr ago, which is consistent with the hypothesis that VAM were instrumental in the colonization of land by ancient plants
  • These include an estimate for the origin of vesicular–arbuscular mycorrhizae-like fungi of 353462 Myr ago, which is consistent with the hypothesis that VAM were instrumental in the colonization of land by ancient plants

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