Horizontal Gene Transfer in Nematodes: A Catalyst for Plant Parasitism?

Annelies Haegeman, John T. Jones, Etienne G. J. Danchin*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

131 Citations (Scopus)

Abstract

The origin of plant parasitism within the phylum Nematoda is intriguing. The ability to parasitize plants has originated independently at least three times during nematode evolution and, as more molecular data has emerged, it has become clear that multiple instances of horizontal gene transfer (HGT) from bacteria and fungi have played a crucial role in the nematode's adaptation to this new lifestyle. The first reported HGT cases in plant-parasitic nematodes were genes encoding plant cell wall degrading enzymes. Other putative examples of HGT were subsequently described, including genes that may be involved in the modulation of the plant's defense system, the establishment of a nematode feeding site, and the synthesis or processing of nutrients. Although, in many cases, it is difficult to pinpoint the donor organism, candidate donors are usually soil dwelling and are either plant-pathogenic or plant-associated microorganisms, hence occupying the same ecological niche as the nematodes. The exact mechanisms of transfer are unknown, although close contacts with donor microorganisms, such as symbiotic or trophic interactions, are a possibility. The widespread occurrence of horizontally transferred genes in evolutionarily independent plant-parasitic nematode lineages suggests that HGT may be a prerequisite for successful plant parasitism in nematodes.

Original languageEnglish
Pages (from-to)879-887
Number of pages9
JournalMolecular Plant-Microbe Interactions
Volume24
Issue number8
DOIs
Publication statusPublished - Aug 2011

Keywords

  • PINE WOOD NEMATODE
  • ROOT-KNOT NEMATODES
  • EXPRESSED SEQUENCE TAGS
  • BURSAPHELENCHUS-XYLOPHILUS
  • HETERODERA-GLYCINES
  • CELL-WALL
  • MELOIDOGYNE-INCOGNITA
  • GLOBODERA-ROSTOCHIENSIS
  • ARABIDOPSIS-THALIANA
  • CHORISMATE MUTASE

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