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Horizontal gene transfer in plants.

Caihua Gao1, Xiaodong Ren, Annaliese S Mason

  • 1Engineering Research Center of South Upland Agriculture, Ministry of Education, Southwest University, Chongqing, People's Republic of China.

Functional & Integrative Genomics
|October 18, 2013
PubMed
Summary
This summary is machine-generated.

Horizontal gene transfer (HGT) pathways in multicellular eukaryotes, particularly plants, remain unclear. This study outlines over ten potential HGT mechanisms, including direct contact and vector-mediated gene exchange.

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Area of Science:

  • Genetics
  • Evolutionary Biology
  • Molecular Biology

Background:

  • Horizontal gene transfer (HGT) is the movement of genetic material between species.
  • While common in microbes and some eukaryotes, HGT pathways in multicellular eukaryotes, especially plants, are poorly understood.
  • Understanding these pathways is crucial for comprehending genomic variation and biological innovation.

Purpose of the Study:

  • To systematically review and propose potential pathways for horizontal gene transfer in multicellular eukaryotes.
  • To elucidate the mechanisms facilitating gene exchange across species boundaries in plants and other complex organisms.

Main Methods:

  • Systematic summarization of existing literature and proposed mechanisms for HGT.
  • Categorization of HGT pathways based on interaction types (direct contact vs. vector-mediated).

Main Results:

  • Identified over ten potential pathways for HGT in multicellular eukaryotes.
  • Highlighted direct contact mechanisms (parasitism, symbiosis, pathogen interactions, grafting) and vector-mediated transfer (pollen, fungi, bacteria, viruses, insects).
  • Emphasized the role of transposable elements in HGT-driven genomic variation.

Conclusions:

  • Intimate species interactions and various biological vectors facilitate HGT in multicellular eukaryotes.
  • Horizontal gene transfer, particularly involving transposable elements, significantly drives genomic variation and evolution.
  • Proposed mechanisms offer insights into genetic information exchange among diverse species and cellular components.