Abstract: We investigated ascospore discharge in the perithecial fungus, Gibberella zeae. In a wind tunnel study that simulated constant rain and varying day and night lengths, the rate of ascospore release was approximately 8-30% greater under light than in complete darkness. Under constant light, ascospore
Ejection mechanics and trajectory of the ascospores of Gibberella …
2005年6月1日 · In the ascomycete Gibberella zeae, we determined the launch speed and kinetic energy of ascospores shot from perithecia, and the source and magnitude of the pressure driving the launch. We asked whether the pressure inside the ascus suffices to …
Fungal cannons: explosive spore discharge in the Ascomycota
2007年11月1日 · Gibberella zeae holds the record for the organism, in any kingdom, with the highest reported acceleration: An ascospore of this species can accelerate from 0 to 8 500 000 m s −2 within the ascus (Trail et al., 2005).
Perithecial development by Gibberella zeae: a light microscopy …
2019年6月4日 · Mid1, a Mechanosensitive Calcium Ion Channel, Affects Growth, Development, and Ascospore Discharge in the Filamentous Fungus Gibberella zeae
cospores in a biseriate arrangement. The ascus walls were simple with a slight thickening at the tip. Key Words: ascus, head blight, perithecia, Pyren-omycetes INTRODUCTION Gibberella zeae (Schw.) Petch (anamorph Fusarium graminearum Schwabe) is the causal agent of head blight, and foot and crown rots of wheat, corn, oats and barley.
RNA editing of the AMD1 gene is important for ascus maturation …
2017年7月4日 · Ascospores are the primary inoculum in the wheat scab fungus Fusarium graminearum that was recently shown to have sexual stage-specific A-to-I RNA editing. One of the genes with...
Gene expression shifts during perithecium development in Gibberella …
2007年11月1日 · During perithecium development, increased MEPA mRNA may reflect a need to recover nitrogen from senescing cell types within the perithecium to use for ascus formation. It is not known how much nutrient influx from the surrounding environment into the developing perithecium occurs during perithecium development.
Light microscopy of developing asci and ascospores. Perithecia …
Head blight, caused by Gibberella zeae, is a significant disease among cereal crops, including wheat, barley, and rice, due to contamination of grain with mycotoxins. G. zeae is spread by...
Abstract:We investigated ascospore discharge in the perithecial fungus,Gibberella zeae. In a wind tunnel study that simulated constant rain and varying day and night lengths, the rate of...
RNA-dependent RNA polymerases regulate ascospore discharge …
Interestingly, the perithecia-specific RNAi components Fgdcl1 and Fgago2 are involved in the perithecium development and ascospore discharge, but not in asexual development and reproduction (15, 16). Therefore, we are curious about the role of Fgrdrp, another important component of RNAi, in the sexual stage-specific RNAi pathway of F. graminearum.