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Nuclear dynamics during ascospore germination in Sordaria macrospora
1Lehrstuhl für Allgemeine und Molekulare Botanik, Ruhr-Universitaet Bochum, Universitaetsstrasse 150, 44780 Bochum, Germany.
Fungal Genetics and Biology : FG & B
|November 29, 2016
Summary
This study visualizes nuclear movement during Sordaria macrospora ascospore germination. Nuclei enter germination vesicles, establishing polar growth in this model fungus.
Area of Science:
- Mycology
- Cell Biology
- Developmental Biology
Background:
- Sordaria macrospora is a model organism for fungal sexual reproduction.
- Genes for perithecium formation and ascospore germination are known.
- The nuclear dynamics during ascospore germination itself remain unexamined.
Purpose of the Study:
- To investigate the nuclear dynamics during the germination of Sordaria macrospora ascospores.
- To elucidate the initial steps of polar growth establishment from ascospores.
Main Methods:
- Utilized live-cell imaging techniques.
- Employed a fluorescently labeled histone for nuclear visualization.
- Focused on the germination process of Sordaria macrospora ascospores.
Main Results:
- Observed nuclei being transported into specialized germination vesicles.
- These vesicles form on a specific side of the ascospore.
- Polar growth initiation was directly linked to these vesicle-associated nuclear movements.
Conclusions:
- Nuclear migration into germination vesicles is a key event in Sordaria macrospora ascospore germination.
- This process establishes the polarity for subsequent fungal growth.
- Provides novel insights into the early stages of fungal development.
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