Abscission is the final step of cytokinesis that involves the cleavage of the intercellular bridge connecting the two daughter cells. Recent studies have given novel insight into the spatiotemporal regulation and molecular mechanisms controlling abscission in cultured yeast and human cells. The mechanisms of abscission in living metazoan tissues are however not well understood. Here we show tha...

Seventy-one wild-isolated strains of Neurospora crassa were examined for their ability to support repeat-induced point mutation (RIP) in the erg-3 locus. RIP was exceptionally inefficient but detectable in crosses with the strain FGSC 430 from Adiopodoume, Ivory Coast. We could find no consistent differences in ascospore yields when wild isolates identified as "low-RIP" or "high-RIP" strains we...

In China, Fusarium head blight is caused mainly by the Fusarium graminearum species complex (FGSC), which produces trichothecene toxins. The FGSC is divided into three chemotypes: 3-acetyldeoxynivalenol (3-ADON), 15-acetyldeoxynivalenol (15-ADON), and nivalenol (NIV). In order to predict the geographical changes in the distribution of these chemotype populations in major winter wheat-producing ...

We compared two well-established methods, fungal isolation followed by conventional PCR and DNA analysis by quantitative PCR (qPCR), to define trichothecene genotypes in Brazilian wheat grains from different locations. For this purpose, after fungal isolation from 75 wheat samples, 100 isolates of the Fusarium graminearum species complex (FGSC) were genotyped by PCR to establish their trichothe...

The size and extent of four Neurospora crassa duplications, Dp(AR17), Dp(IBj5), Dp(OY329) and Dp(B362i) was determined by testing the coverage of RFLP markers. The first three duplications were all > ~350 kb and have been shown in earlier studies to act as dominant suppressors of repeat-induced point mutation (RIP) in gene-sized duplications, possibly via titration of the RIP machinery. Dp(B362...

We theoretically study the efficiency limits and performance characteristics of few-layer graphene–semiconductor solar cells (FGSCs) based on a Schottky contact device structure. model compare power conversion (PCE) various configurations by explicitly considering non-Richardson thermionic emission across graphene/semiconductor heterostructures. The calculations reveal that ABA-stacked trilayer...

Primordial germ cells (PGCs) are the precursors of reproductive gametes. They were first identified in the posterior region of embryos at the angle between the allantois and the wall of the yolk sac, and were shown to subsequently migrate into the forming gonadal ridges in early mouse and human embryos of both sexes (Eddy et al., 1981; Bendel-Stenzel et al., 1998). PGCs will eventually differen...