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Gene expression associated with intersterility in Heterobasidion.

M A Van der Nest1, Å Olson1, M Karlsson1

  • 1Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala SE-750 07, Sweden.

Fungal Genetics and Biology : FG & B
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PubMed
Summary
This summary is machine-generated.

Intersterility (IS) prevents mating between different species in Heterobasidion. Gene expression analysis revealed distinct molecular pathways for mating compatibility and incompatibility, including stress responses.

Keywords:
Heterobasidion irregulareHeterobasidion occidentaleIntersterilityMatingRNA-seq

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Area of Science:

  • Mycology
  • Genetics
  • Molecular Biology

Background:

  • Intersterility (IS) is crucial for preventing mating between different species.
  • In Heterobasidion, IS is controlled by genes at specific loci, but their role in sexual compatibility and heterokaryon formation is unclear.

Purpose of the Study:

  • To elucidate the molecular events governing intersterility in Heterobasidion.
  • To understand how gene expression changes during compatible and incompatible mating interactions.

Main Methods:

  • Analyzing mRNA abundance changes over time in compatible and incompatible interactions.
  • Clustering transcripts into expression profiles.
  • Applying Gene Ontology (GO) enrichment pathway analysis to identify biological processes.

Main Results:

  • Identified gene expression patterns linked to IS compatibility, involving cell adhesion, recognition, cell cycle control, and signal transduction.
  • Detected gene expression patterns linked to IS incompatibility, including reactive oxygen species (ROS) production, stress responses, and metabolic biosynthesis.
  • Characterized specific gene expression changes and identified key pathways involved in Heterobasidion intersterility.

Conclusions:

  • The study provides novel insights into the molecular mechanisms underlying intersterility in Heterobasidion.
  • Established a foundational understanding of gene expression dynamics during mating interactions, crucial for species isolation.