Salt-coated air oxidation nanodiamond surface purification with a photoluminescence spectroscopy quality control.

Emerging fields of quantum technologies and biomedical applications demand pure nanodiamonds (NDs) with well-defined surface chemistry. Therefore, an inexpensive, scalable and eco-friendly ND surface purification technology is required. In this study, we report our method, salt-coated air oxidation (SCAO) thermal annealing, to achieve uniform purification of a ND surface without the loss of diamond material.

A characteristic of the species composition of pathogenic fungi of the genus Fusarium in corn biocenoses of the Voronezh region.

Corn is one of the main crops of modern world agriculture. It ranks f irst in terms of gross grain harvests and second in terms of acreage, ceding only to the main grain crop of the globe, wheat. The problem of increasing the production of grain and green mass of corn remains one of the urgent tasks of agricultural production.

SSR Variability of Stem Rust Pathogen on Spring Bread Wheat in Russia.

Wheat stem rust, caused by f. sp. , which used to be a harmful disease of winter wheat in the southern part of Russia, has been largely affecting the yield of spring bread wheat in the territories of the temperate climate zone since 2009.

Primary hexaploid synthetics: Novel sources of wheat disease resistance.

Climate change is leading to increased occurrence of and yield losses to wheat diseases. Managing these diseases by introducing new, effective and diverse resistance genes into cultivars represents an important component of sustainable wheat production. In 2016 and 2017 a set of primary hexaploid synthetic wheat was studied under high disease pressure: powdery mildew, leaf and stem rust in Omsk; and in Moscow.

First Report of Stem Canker of Salsola tragus Caused by Diaporthe eres in Russia.

Salsola tragus L. (Russian thistle) is a problematic invasive weed in the western United States and a target of biological control efforts. In September of 2007, dying S.

First Report of Anthracnose of Salsola tragus Caused by Colletotrichum gloeosporioides in Russia.

In October of 2006, dying Salsola tragus L. (Russian thistle, tumbleweed), family Chenopodiaceae, plants were found along the Azov Sea at Chushka, Russia. Approximately 40 plants in the area were diseased and almost 80% of these were dying.

[Extracellular proteases of mycelial fungi as participants of pathogenic processes].

The interest in proteases secreted by mycelial fungi is due to several reasons of which one of the most important is their involvement in the initiation and development of the pathogenic process. A comparison of saprophytic and phytopathogenic mycelial fungi revealed one characteristic feature, namely, the appearance of a new trypsin-like activity in phytopathogens that is absent in saprophytes. To clear up the question of whether the degree of pathogenicity of a fungus is related to the activity of secreted trypsin-like protease, several species of Fusarium of various pathogenicity were compared.

First Report of Leaf Spot Caused by Periconia igniaria on Yellow Starthistle in Russia.

Yellow starthistle (YST), Centaurea solstitialis L., is a weedy plant that is widely distributed in the Krasnodar Region of Russia. It is also an aggressive invasive weed in the western United States and a target of biological control efforts.

[Phytopathological and molecular genetic identification of brown rust resistance genes in common wheat accessions with alien genetic material].

Brown rust resistance genes were sought in 23 resistant common wheat accessions with alien genetic material of Aegilops speltoides, Ae. triuncialis, and Triticum kiharae from the Arsenal collection. The genes were identified by common phytopathological tests and PCR analysis with STS markers directed to the known Lr genes.