Complete chloroplast genomes of five Boiss. accessions having different geographical origins.

The subject of this study is Boiss. 1844: a member of the section , subsection . This species is infrequently included in phylogenetic studies and is commonly regarded as a heterotypic synonym of Tausch.

Molecular Genetic Research and Genetic Engineering of L.E. Rodin.

Natural rubber (NR) remains an indispensable raw material with unique properties that is used in the manufacture of a large number of products and the global demand for it is growing every year. The only industrially important source of NR is the tropical tree (Willd. ex A.

Role of Endogenous Salicylic Acid as a Hormonal Intermediate in the Bacterial Endophyte -Induced Protection of Wheat Genotypes Contrasting in Drought Susceptibility under Dehydration.

Endophytic is a non-pathogenic beneficial bacterium which promotes plant growth and tolerance to abiotic stresses, including drought. However, the underlying physiological mechanisms are not well understood. In this study, the potential role that endogenous salicylic acid (SA) plays in regulating endophytic -mediated drought tolerance in wheat ( L.

The Role of the Gene in Resistance to Powdery Mildew Infection and Cold Stress.

Oilseed rape () is an economically important crop. In a temperate climate, powdery mildew can drastically reduce its yield. Nevertheless, cultivars resistant to this fungal disease have not yet been selected.

Limitation of Cytokinin Export to the Shoots by Nucleoside Transporter ENT3 and its Linkage with Root Elongation in Arabidopsis.

The trans-membrane carrier AtENT3 is known to transport externally supplied cytokinin ribosides and thus promote uptake by cells. However, its role in distributing either exogenous or endogenous cytokinins within the intact plant has not hitherto been reported. To test this, we used mutant Arabidopsis seedlings in which the gene is not expressed due to a T-DNA insertion, and examined the effect on the concentration and distribution of either endogenous cytokinins or exogenous trans-zeatin riboside applied to the roots.

Effects of Phosphate Shortage on Root Growth and Hormone Content of Barley Depend on Capacity of the Roots to Accumulate ABA.

Although changes in root architecture in response to the environment can optimize mineral and water nutrient uptake, mechanisms regulating these changes are not well-understood. We investigated whether P deprivation effects on root development are mediated by abscisic acid (ABA) and its interactions with other hormones. The ABA-deficient barley mutant and its wild-type (WT) were grown in P-deprived and P-replete conditions, and hormones were measured in whole roots and root tips.

The ARGOS-LIKE genes of Arabidopsis and tobacco as targets for improving plant productivity and stress tolerance.

A small family of ARGOS genes encodes transmembrane proteins that act as negative regulators of ethylene signaling. Recent studies show that ARGOS genes are involved in the regulation of plant growth under the influence of stress factors. However, the role of ARGOS genes in this process is poorly known.

Effect of constitutive expression of Arabidopsis CLAVATA3 on cell growth and possible role of cytokinins in leaf size control in transgenic tobacco plants.

We generated transgenic tobacco plants (Nicotiana tabacum L.) with overexpression of the Arabidopsis thaliana CLAVATA3 (CLV3) gene which is known to be a negative regulator of cell division. Surprisingly, most of the 35S::CLV3 transgenic plants showed no phenotypic differences with the wild type plants.

Potential for gene flow from genetically modified Brassica napus on the territory of Russia.

Gene flow from genetically modified crops has been studied for more than 20 years, but public concern still remains. A lot of data on this matter is obtained on the territory of EU and the USA, but in the majority of countries, such experiments were never carried out. Here, we present the first study of interspecific and intraspecific hybridization of transgenic Brassica napus on the territory of Russia.

Expression profiles and hormonal regulation of tobacco NtEXGT gene and its involvement in abiotic stress response.

Despite the intensive study of xyloglucan endotransglucosylases/hydrolases, their multifaceted role in plant growth regulation in changing environmental conditions is not yet clarified. The functional role of the large number of genes encoding this group of enzymes is also still unclear. NtEXGT gene encodes one of xyloglucan endotransglucosylases/hydrolases (XTHs) of Nicotiana tabacum L.

Expression profiles and hormonal regulation of tobacco expansin genes and their involvement in abiotic stress response.

Changes in the expression levels of tobacco expansin genes NtEXPA1, NtEXPA4, NtEXPA5, and NtEXPA6 were studied in different organs of tobacco (Nicotiana tabacum L.) as well as in response to phytohormone and stress treatments. It was shown that NtEXPA1, NtEXPA4 and NtEXPA5 transcripts were predominantly expressed in the shoot apices and young leaves, but almost absent in mature leaves and roots.

Role of AINTEGUMENTA-like gene NtANTL in the regulation of tobacco organ growth.

The Nicotiana tabacum AINTEGUMENTA-like gene (NtANTL), encoding one of AP2/ERF transcription factors, is a putative ortholog of the AtANT gene from Arabidopsis thaliana. In wild-type tobacco plants, the NtANTL gene was expressed in the actively dividing young flowers, shoot apices, and calluses, while the level of its mRNA increased considerably after treatment with exogenous 6-benzylaminopurine, indoleacetic acid and 24-epibrassinolide. We found a positive correlation among the expression levels of NtANTL, cyclin NtCYCD3;1 and cyclin-dependent kinase NtCDKB1-1 genes, suggesting possible molecular links between AINTEGUMENTA and cell cycle regulators in tobacco plants.