Nitric oxide (NO) plays a role in defence against hemibiotrophic pathogens mediated by salicylate (SA) and also necrotrophic pathogens influenced by jasmonate/ethylene (JA/Et). This study examined how NO-oxidizing haemoglobins (Hb) encoded by GLB1, GLB2, and GLB3 in Arabidopsis could influence both defence pathways. The impact of Hb on responses to the hemibiotrophic Pseudomonas syringae pathov...

Natural honey is a source of vital amino acids, easily digestible carbohydrates, macro, microelements, biologically active substances that determine nutritional, antibacterial and antioxidant properties. In the conditions man-caused pollution Polissya Ukraine due to accident at Chernobyl nuclear power plant, systematic control quality safety beekeeping products important. To conduct such resear...

Although the tobacco N gene, which confers resistance to Tobacco mosaic virus (TMV), is transcriptionally induced by infection with TMV, the regulatory mechanism has not previously been elucidated. We found that a 5¢-flanking region of the N gene exhibits TMVinducible promoter activity and that the region from )290 to )271 includes a cis-acting element in response to infection. The activity req...

Cauliflower mosaic virus 35S promoter, widely used in transgenic crop plants, is known to be recognized in widely differing kinds of cells. Its activity in human cells may have impact on the risk assessment for the environmental release of genetically modified plants. In this study, transient expression of several constructs containing beta-glucuronidase (GUS) gene driven by cauliflower mosaic ...

Expansins are non-hydrolytic cell wall-loosening proteins involved in a variety of plant developmental processes during which cell wall modification occurs. Cell wall remodeling proteins including expansins have been suggested to be involved in cell separation to facilitate the emergence of lateral roots (LRs) through the overlaying tissues of the primary root. LBD18/ASL20 activates EXPANSINA14...

The binding sites of wheat germ RNA polymerase II were mapped on the cloned CaMV genome by observation of enzyme-linear DNA complexes by electron microscopy. Twelve sites are observed. Three of them are relatively stable in the presence of heparin and are found at positions 8-9, 21-23, and 41-44 map units on the physical map of the genome. These positions correspond to AT-rich regions of the vi...

Eucommia ulmoides Oliver is a unique tertiary relict tree species in China belonging to the family and genus. It traditional precious Chinese medicinal herb with anti-tumor, antibacterial, antioxidant, anti-inflammatory, bidirectional blood pressure regulation effects. mainly grows temperate regions of China, but due its sensitivity low-temperatures, it difficult introduce into new regions. To ...

It has been well established that trans-acting small RNAs guide promoter methylation leading to its inactivation and gene silencing at the transcriptional level (TGS). Here we addressed the question of the influence of the locus structure and epigenetic modifications of the target locus on its susceptibility for being paramutated by trans-acting small RNA molecules. Silencing was induced by cro...