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Abteilungen / Wissenschaft & Forschung / Abteilung für Zell- u. Entwicklungsbiologie / Epigenetics and RNA Biology / Group Miller
 
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Inhaltsbereich

Group: Miller, Wolfgang J.

Last Droso sampling expedition to Costa Rica

Research Focus

Host – Symbiont Interactions, Symbiosis Research in Evolutionary Biology

Main Objectives

Functional and evolutionary long- & short-term dynamics of mobile genetic elements and endosymbiotic bacteria such as Wolbachia in different eukaryotic host systems.

  1. Nuclear Symbionts (Transposons)
  2. Microbial Symbionts (Wolbachia)


Experimental Systems

Insects - Drosophilidae: D. melanogaster, D. simulans, D. willistoni, D. paulistorum species complex;  Tephritidae: Rhagoletis cerasi (Cherry fruit fly), Bactrocera tryoni (Queensland fruit fly), Glossinidae: 	Glossina ssp. (Tsetse fly) | Mammals - Mus mu
Insects - Drosophilidae: D. melanogaster, D. simulans, D. willistoni, D. paulistorum species complex; Tephritidae: Rhagoletis cerasi (Cherry fruit fly), Bactrocera tryoni (Queensland fruit fly), Glossinidae: Glossina ssp. (Tsetse fly) | Mammals - Mus musculus musculus


Content of Research

Symbiotic Systems

  • Nuclear Symbionts (Tranposons)
  • Microbial Symbionts (Wolbachia) 

Main Research Questions

  • What are the impacts of symbionts on sexual host behavior and other life history traits?
  • What are the epigenetic mechanisms that modulate symbiotic interactions?
  • What are the impacts of Wolbachia on insect host speciation?
  • Is symbiosis a common driving force in organismic evolution?

 
1. Classic cases for nuclear symbionts that have triggered evolutionary novelities

InnovationSymbiont TypeFunction    Theory
Eukaryotic
Telomeres
Reverse
Transcriptase
Linear
Chromosomes
Transposon
Domestication
Cell organellesα-proteobacteriaMetabolismEndosymbiotic
Theory
DNA-Methylation
Histone-Code
RNA-interference
Mobile DNAsEpigeneticsNuclear
Defense
VDJ-JoiningDNA TransposonImmune SystemCellular Defense


2. The impact of the endosymbiont Wolbachia on modulating insect host biology

Target    Effect    Theory
Mating
Incompatibilities
Spreading    Vertical
Transmission
Sex RatioFemale-biasedVertical
Transmission
LongevityLife ShorteningTrade Off
Immunity    Multi ResistanceTrade Off
Assortative MatingPrezygotic
Isolation   
Obligate
Mutualism
Host SpeciationRadiation    Symbiotic
Speciation


» Website Miller

 
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