2008年8月6日 · We report here direct evidence that spores display enhanced survival relative to vegetative cells in passage through the gut of Drosophila melanogaster, and that mutations specifically affecting the spore wall reduce their survival rate. Moreover, resistance requires the layers unique to the spore wall.

Given the restoration of vegetative-like organization of the spore cytoplasm, the spore wall is the main feature that distinguishes spores from stationary phase haploid cells.

In the second phase, each immature spore becomes surrounded by a multilaminar spore wall that provides resistance to environmental stresses. This review focuses on our current understanding of the cellular rearrangements and the genes required in each of these phases to give rise to a wild-type spore. INTRODUCTION

2017年9月9日 · In response to nutrient starvation, diploid cells of the budding yeast Saccharomyces cerevisiae undergo meiosis and differentiate into a dormant form of haploid cell termed a spore. Spore formation occurs inside of the mother cell where the four nuclei produced by meiosis are enclosed by newly synthesized spore plasma membranes and spore walls.

Yeast sporulation takes place within a single (usually diploid) cell and generates (usually four) spores encased within the original cell wall of the sporulating cell, called the ascus (Neiman, 2011).

2024年6月14日 · Smk1 is a MAPK homolog in the yeast Saccharomyces cerevisiae that controls the postmeiotic program of spore wall assembly. During this program, haploid cells are surrounded by a layer of mannan and then a layer of glucan. These inner layers of the spore wall resemble the vegetative cell wall.

2017年9月22日 · In response to nutrient starvation, diploid cells of the budding yeast <i>Saccharomyces cerevisiae</i> differentiate into a dormant form of haploid cell termed a spore. The dityrosine layer forms the outermost layer of the wall of <i>S. cerevisiae</i> spores and endows them with resistance to enviro …

1994年5月5日 · Dityrosine is a sporulation-specific component of the yeast ascospore wall that is essential for the resistance of the spores to adverse environmental conditions. Dityrosine in vivo exists in both the LL and DL configurations and is part of …

2016年2月1日 · Here we carefully analyze PSM dynamics and spore wall composition in mutant cells to identify specific functional requirements for septins during budding yeast sporulation.

1999年10月29日 · Chitin deacetylases are required for spore wall rigidity in Saccharomyces cerevisiae. Two chitin deacetylase genes (CDA1 and CDA2) have been identified in yeast. In this report we studied the biochemical properties of the chitin deacetylases encoded by CDA1 and CDA2 and we show how their elimination directly affects the ascospore wall assembly.