Gene Expression in Parthenogenic Maize Proembryos.

Angiosperm plants reproduce both sexually and asexually (by apomixis). In apomictic plants, the embryo and endosperm develop without fertilization. Modern maize seems to have a broken apomixis-triggering mechanism, which still works in and in -maize hybrids.

Parents' Personality, Marriage Satisfaction, Stress, and Punishment of Children in the Family.

The objective of the research is to ascertain whether emotional and volitional characteristics of the individual affect the frequency of punishment in the family (for example, prohibition to watch TY for some time, pocket money reduction, request for an apology). These types of punishments are legal in Russia. The research method is Perrez's, Schoebi's questionnaire on punishing behavior in education, and Chumakov's questionnaire on volitional and emotional characteristics of a person (VEC).

Agrobacterial, Single-Stranded DNA-Binding Protein VirE2 and Its Complexes.

VirE2 from is a single-stranded (ss) DNA-binding protein involved in delivery of ssT-DNA (single-stranded transfer DNA) from the agrobacterial Ti plasmid into the eukaryotic cell nucleus. The crystallized part of VirE2 was studied by X-ray diffraction, and the noncrystallized parts of the C- (40 amino acid residues [aars]) and N- (111 aars) termini of the protein, which are presumably disordered, were evaluated by computational methods. We did a molecular dynamics simulation of VirE2 without VirE1 and observed no large changes in domain orientation.

Mechanisms and Characterization of the Pulsed Electron-Induced Grafting of Styrene onto Poly(tetrafluoroethylene-co-hexafluoropropylene) to Prepare a Polymer Electrolyte Membrane.

During the pulsed-electron beam direct grafting of neat styrene onto poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP) substrate, the radiolytically-produced styryl and carbon-centered FEP radicals undergo various desired and undesired competing reactions. In this study, a high-dose rate is used to impede the undesired free radical homopolymerization of styrene and ensure uniform covalent grafting through 125-μm FEP films. This outweighs the enhancement of the undesired crosslinking reactions of carbon-centered FEP radicals and the dimerization of the styryl radicals.

[Analysis of the Gamete-Fusion Genes in the Haploid-inducing ZMS-P Maize Line].

This article is devoted to the study of the double fertilization mechanism in plants, in particular of the maize gamete membrane fusion genes. We detected and analyzed for the first time gamete-fusion genes in the maize genome. Using the BLAST program, we searched for the hap2 gene (generative cell specific 1 (gcs1)) homologs from Arabidopsis in the maize genome.