The wheat stem rust pathogen in the central region of the Russian Federation

2012 ◽  
Vol 62 (5) ◽  
pp. 1003-1010 ◽  
Author(s):  
E. S. Skolotneva ◽  
S. N. Lekomtseva ◽  
E. Kosman
Keyword(s):  
Russian Federation ◽  
Central Region ◽  
Stem Rust ◽  
Wheat Stem Rust ◽  
Rust Pathogen ◽  
The Russian Federation

The results of field trials of the codling moth pheromone preparations in 2020

2020 ◽  
Author(s):  
S.V. Dmitriyeva ◽  
◽  
I.M. Mityushev
Keyword(s):  
Russian Federation ◽  
Central Region ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Field Trials ◽  
Field Screening ◽  
Tube Type ◽  
The Russian Federation ◽  
Polyethylene Dispenser

This article presents the results of field screening of pheromone preparations of the codling moth, Cydia pomonella L., conducted in 2020 under conditions of the Central Region of the Russian Federation. The new «Tube» type dispensers were tested vs. standard foil-polyethylene dispenser.

Retrospective analysis of virulence of the North Caucasian population of wheat stem rust pathogen

2019 ◽  
Vol 1 (81) ◽  
pp. 85-90
Author(s):  
Galina Volkova ◽  
◽  
Olesya Miroshnichenko ◽  
Olga Tarancheva ◽  
◽  
...  
Keyword(s):  
Retrospective Analysis ◽  
Stem Rust ◽  
Caucasian Population ◽  
Wheat Stem Rust ◽  
The North ◽  
Rust Pathogen

Characteristic of M.tuberculosis in the Central Region of the Russian Federation (2017-2019)

2021 ◽  
Author(s):  
Sofya Andreevskaya ◽  
Tatiana Smirnova ◽  
Larisa Chernousova ◽  
Elena Larionova ◽  
Atadzan Ergeshov
Keyword(s):  
Russian Federation ◽  
Central Region ◽  
The Russian Federation

scholarly journals Emergence of the Ug99 lineage of the wheat stem rust pathogen through somatic hybridisation

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Feng Li ◽  
Narayana M. Upadhyaya ◽  
Jana Sperschneider ◽  
Oadi Matny ◽  
Hoa Nguyen-Phuc ◽  
...  
Keyword(s):  
Stem Rust ◽  
Wheat Stem Rust ◽  
Haploid Nucleus ◽  
Somatic Hybridisation ◽  
Global Food Security ◽  
Proximity Analysis ◽  
Rust Pathogen ◽  
Fungal Populations ◽  
Nuclear Exchange ◽  
Global Food

Abstract Parasexuality contributes to diversity and adaptive evolution of haploid (monokaryotic) fungi. However, non-sexual genetic exchange mechanisms are not defined in dikaryotic fungi (containing two distinct haploid nuclei). Newly emerged strains of the wheat stem rust pathogen, Puccinia graminis f. sp. tritici (Pgt), such as Ug99, are a major threat to global food security. Here, we provide genomics-based evidence supporting that Ug99 arose by somatic hybridisation and nuclear exchange between dikaryons. Fully haplotype-resolved genome assembly and DNA proximity analysis reveal that Ug99 shares one haploid nucleus genotype with a much older African lineage of Pgt, with no recombination or chromosome reassortment. These findings indicate that nuclear exchange between dikaryotes can generate genetic diversity and facilitate the emergence of new lineages in asexual fungal populations.

Identification and mapping of Sr46 from Aegilops tauschii accession CIae 25 conferring resistance to race TTKSK (Ug99) of wheat stem rust pathogen

2014 ◽  
Vol 128 (3) ◽  
pp. 431-443 ◽  
Author(s):  
Guotai Yu ◽  
Qijun Zhang ◽  
Timothy L. Friesen ◽  
Matthew N. Rouse ◽  
Yue Jin ◽  
...  
Keyword(s):  
Stem Rust ◽  
Aegilops Tauschii ◽  
Wheat Stem Rust ◽  
Tauschii Accession ◽  
Rust Pathogen

scholarly journals Emergence of the Ug99 lineage of the wheat stem rust pathogen through somatic hybridisation

2019 ◽  
Author(s):  
Feng Li ◽  
Narayana M. Upadhyaya ◽  
Jana Sperschneider ◽  
Oadi Matny ◽  
Hoa Nguyen-Phuc ◽  
...  
Keyword(s):  
Stem Rust ◽  
Puccinia Graminis ◽  
Wheat Stem Rust ◽  
Haploid Nucleus ◽  
Somatic Hybridisation ◽  
Global Food Security ◽  
Proximity Analysis ◽  
Rust Pathogen ◽  
Nuclear Exchange ◽  
Global Food

AbstractParasexuality contributes to diversity and adaptive evolution of haploid (monokaryotic) fungi. However non-sexual genetic exchange mechanisms are not defined in dikaryotic fungi (containing two distinct haploid nuclei). Newly emerged strains of the wheat stem rust pathogen, Puccinia graminis f. sp. tritici (Pgt), such as Ug99, are a major threat to global food security. Here we show that Ug99 arose by somatic hybridisation and nuclear exchange between dikaryons. Fully haplotype-resolved genome assembly and DNA proximity analysis revealed that Ug99 shares one haploid nucleus genotype with a much older African lineage of Pgt, with no recombination or reassortment. Generation of genetic variation by nuclear exchange may favour the evolution of dikaryotism by providing an advantage over diploidy.

ASSESSMENT OF THE PRODUCTIVITY AND QUALITY OF VARIETIES AND PROMISING HYBRIDS OF POTATO IN THE CONTEXT OF THE CENTRAL REGION OF THE RUSSIAN FEDERATION

2019 ◽  
Vol 1 (1) ◽  
pp. 15-21
Author(s):  
Adam Shabanov ◽  
Aleksander Kiselev ◽  
Ludmila Fedotova ◽  
Nataliya Timoshina ◽  
Elena Knyazeva
Keyword(s):  
Russian Federation ◽  
Central Region ◽  
Biochemical Indicators ◽  
The Russian Federation ◽  
Intended Use

The article presents the results of the evaluation of promising varieties and hybrids 59 potatoes different ripeness on productivity, biochemical indicators and canteens qualities of tubers. Highlighted the varieties and hybrids with yield levels over 40 t/ha. Identified by their culinary type and intended use of the product.

ETIOLOGICAL STRUCTURE OF PNEUMOENTERITISES IN CALVES ON CATTLE BREEDING FARMS IN THE CENTRAL REGION OF THE RUSSIAN FEDERATION

2020 ◽  
Vol 1 (10) ◽  
pp. 96-105
Author(s):  
O. A. Manzhurina ◽  
◽  
Yu. S. Parkhomenko ◽  
I. S. Perepelkina ◽  
E. V. Semenova ◽  
...  
Keyword(s):  
Russian Federation ◽  
Central Region ◽  
Cattle Breeding ◽  
The Russian Federation ◽  
Breeding Farms

scholarly journals Resistance of Aegilops Species from Israel to Widely Virulent African and Israeli Races of the Wheat Stem Rust Pathogen

Plant Disease ◽  
2014 ◽  
Vol 98 (10) ◽  
pp. 1309-1320 ◽  
Author(s):  
Jeness C. Scott ◽  
Jacob Manisterski ◽  
Hanan Sela ◽  
Pnina Ben-Yehuda ◽  
Brian J. Steffenson
Keyword(s):  
Stem Rust ◽  
High Frequency ◽  
Infection Type ◽  
Low Frequency ◽  
Puccinia Graminis ◽  
Aegilops Species ◽  
Wheat Stem Rust ◽  
Transfer Resistance ◽  
Desert Region ◽  
Rust Pathogen

Widely virulent races of the stem rust pathogen (Puccinia graminis f. sp. tritici) such as those isolated from Africa (e.g., TTKSK, isolate synonym Ug99) threaten wheat production worldwide. To identify Aegilops accessions with effective resistance to such virulent stem rust races, up to 10 different species from Israel were evaluated against African races TTKSK, TTKST, and TTTSK and the Israeli race TTTTC as seedlings in the greenhouse. A wide diversity of stem rust reactions was observed across the Aegilops spp. and ranged from highly resistant (i.e., infection type 0) to highly susceptible (infection type 4). The frequency of resistance within a species to races TTTTC and TTKSK ranged from 7 and 14%, respectively, in Aegilops searsii to 98 and 100% in AE. speltoides. In all, 346 accessions were found resistant to the three African races and 138 accessions were resistant (or heterogeneous with a resistant component) to all four races. The species with broadly resistant accessions included Ae. longissima (59 accessions), Ae. peregrina (47 accessions), Ae. sharonensis (15 accessions), Ae. geniculata (9 accessions), Ae. kotschyi (5 accessions), and Ae. bicornis (3 accessions). Few geographical trends or correlations with climatic variables were observed with respect to stem rust resistance in the Aegilops spp. The exception was Ae. longissima infected with race TTTTC, where a high frequency of resistance was found in central and northern Israel and a very low frequency in southern Israel (Negev desert region). This geographical trend followed a pattern of annual precipitation in Israel, and a significant correlation was found between this variable and resistance in Ae. longissima. Although difficult, it is feasible to transfer resistance genes from Aegilops spp. into wheat through conventional wide-crossing schemes or, alternatively, a cloning and transformation approach. The broadly resistant accessions identified in this study will be valuable in these research programs.

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