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Russian wheat aphid (RWA) ( Kurdjumov) is a serious invasive pest of small-grain cereals and many grass species. An efficient strategy to defy aphid attacks is to identify sources of natural resistance and transfer resistance genes into susceptible crop cultivars. Revealing the genes helps understand plant defense mechanisms and engineer plants with durable resistance to the pest. To date, more than 15 RWA resistance genes have been identified in wheat ( L.) but none of them has been cloned. Previously, we genetically mapped the RWA resistance gene into an interval of 0.83 cM on the short arm of chromosome 7D and spanned it with five bacterial artificial chromosome (BAC) clones. Here, we used a targeted strategy combining traditional approaches toward gene cloning (genetic mapping and sequencing of BAC clones) with novel technologies, including optical mapping and long-read nanopore sequencing. The latter, with reads spanning the entire length of a BAC insert, enabled us to assemble the whole region, a task that was not achievable with short reads. Long-read optical mapping validated the DNA sequence in the interval and revealed a difference in the locus organization between resistant and susceptible genotypes. The complete and accurate sequence of the region facilitated the identification of new markers and precise annotation of the interval, revealing six high-confidence genes. Identification of as the most likely candidate opens an avenue for its validation through functional genomics approaches.
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http://dx.doi.org/10.3835/plantgenome2018.09.0065 | DOI Listing |
Heliyon
December 2024
Department of Technology and Safety of Food Products, Kazakh National Agrarian Research University, Almaty, Kazakhstan.
The main research objective of this study is to conduct a detailed econometric analysis of the factors affecting the competitiveness of cereal production in Northern Kazakhstan and the Volga region of Russia, focusing on climatic conditions, irrigation systems, and soil cultivation technologies. The assessment of grain production competitiveness was considered for the period 2018-2020 in the context of the following indicators: grain yield, grain sown area, and gross grain harvest. The data analysis also included indicators of annual domestic grain consumption and total grain production in Kazakhstan and Russia.
View Article and Find Full Text PDFPlants (Basel)
December 2024
N.N. Vorozhtsov Institute of Organic Chemistry SB RAS, Lavrentiev ave. 9, 630090 Novosibirsk, Russia.
The use of biological plant protection products is promising for agriculture. In particular, chitosan-based biopesticides have become widespread for stimulating growth and protecting plants from a wide range of pathogens. Novochizol is a product obtained by intramolecular cross-linking of linear chitosan molecules and has a globular shape, which provides it with a number of advantages over chitosan.
View Article and Find Full Text PDFPlants (Basel)
November 2024
All-Russia Research Institute for Agricultural Microbiology, Podbelskogo Hwy 3, Pushkin, 196608 Saint Petersburg, Russia.
The aim of this research was to study the effect of plant-growth-promoting bacteria (PGPB) isolated from the drought-tolerant plants camel thorn ( (M.Bieb.) Fisch) and white pigweed ( L.
View Article and Find Full Text PDFMikrochim Acta
November 2024
Institute of Chemistry, Saratov State University, Astrakhanskaya Street 83, Saratov, 410012, Russia.
The aim of this study is to develop molecularly imprinted protein specific to zearalenone (ZEN). The primary idea of our study was to replace the toxic template-ZEN-with a dummy-template-4-hydroxicoumarin-during the synthesis of imprinted proteins (IPs). The choice of the dummy-template was based on the results of comprehensive evaluation that included a combination of blind docking and molecular dynamics simulations.
View Article and Find Full Text PDFMicroorganisms
November 2024
Laboratory of Molecular Genetics and Microbiology Methods, Kazan Scientific Center, Russian Academy of Sciences, 420111 Kazan, Russia.
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