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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Agronomy and Animal Industries</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Agronomy and Animal Industries</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Агрономия и животноводство</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-797X</issn><issn publication-format="electronic">2312-7988</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">19700</article-id><article-id pub-id-type="doi">10.22363/2312-797X-2021-16-4-326-336</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Plant protection</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Защита растений</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Screening of blast resistance genes in rice breeding samples</article-title><trans-title-group xml:lang="ru"><trans-title>Скрининг генов устойчивости к пирикуляриозу у селекционных образцов риса</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2046-4000</contrib-id><name-alternatives><name xml:lang="en"><surname>Vozhzhova</surname><given-names>Nataliya N.</given-names></name><name xml:lang="ru"><surname>Вожжова</surname><given-names>Наталия Николаевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Agricultural Sciences, senior researcher, Laboratory of marker selection</p></bio><bio xml:lang="ru"><p>кандидат сельскохозяйственных наук, старший научный сотрудник лаборатории маркерной селекции</p></bio><email>nvozhzh@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1477-3285</contrib-id><name-alternatives><name xml:lang="en"><surname>Zhogaleva</surname><given-names>Olga S.</given-names></name><name xml:lang="ru"><surname>Жогалева</surname><given-names>Ольга Сергеевна</given-names></name></name-alternatives><bio xml:lang="en"><p>junior researcher, Laboratory of Marker Selection</p></bio><bio xml:lang="ru"><p>младший научный сотрудник лаборатории маркерной селекции</p></bio><email>os.zogaleva@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1726-4390</contrib-id><name-alternatives><name xml:lang="en"><surname>Kupreyshvili</surname><given-names>Natia T.</given-names></name><name xml:lang="ru"><surname>Купрейшвили</surname><given-names>Натия Темуриевна</given-names></name></name-alternatives><bio xml:lang="en"><p>research technician, Laboratory of Marker Selection</p></bio><bio xml:lang="ru"><p>техник-исследователь лаборатории маркерной селекции</p></bio><email>kupreyshvilin@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1432-7616</contrib-id><name-alternatives><name xml:lang="en"><surname>Dubina</surname><given-names>Angelina Y.</given-names></name><name xml:lang="ru"><surname>Дубина</surname><given-names>Ангелина Юрьевна</given-names></name></name-alternatives><bio xml:lang="en"><p>research technician, Laboratory of Marker Selection</p></bio><bio xml:lang="ru"><p>техник-исследователь лаборатории маркерной селекции</p></bio><email>angel.myshastaja@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4371-6848</contrib-id><name-alternatives><name xml:lang="en"><surname>Kostylev</surname><given-names>Pavel I.</given-names></name><name xml:lang="ru"><surname>Костылев</surname><given-names>Павел Иванович</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Agricultural Sciences, Head</p></bio><bio xml:lang="ru"><p>доктор сельскохозяйственных наук, руководитель центра фундаментальных научных исследований</p></bio><email>p-kostylev@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Agrarian Science Center ‘Donskoy’</institution></aff><aff><institution xml:lang="ru">Аграрный научный центр «Донской»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-12-30" publication-format="electronic"><day>30</day><month>12</month><year>2021</year></pub-date><volume>16</volume><issue>4</issue><issue-title xml:lang="en">VOL 16, NO4 (2021)</issue-title><issue-title xml:lang="ru">ТОМ 16, №4 (2021)</issue-title><fpage>326</fpage><lpage>336</lpage><history><date date-type="received" iso-8601-date="2021-12-30"><day>30</day><month>12</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Vozhzhova N.N., Zhogaleva O.S., Kupreyshvili N.T., Dubina A.Y., Kostylev P.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Вожжова Н.Н., Жогалева О.С., Купрейшвили Н.Т., Дубина А.Ю., Костылев П.И.</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Vozhzhova N.N., Zhogaleva O.S., Kupreyshvili N.T., Dubina A.Y., Kostylev P.I.</copyright-holder><copyright-holder xml:lang="ru">Вожжова Н.Н., Жогалева О.С., Купрейшвили Н.Т., Дубина А.Ю., Костылев П.И.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://agrojournal.rudn.ru/agronomy/article/view/19700">https://agrojournal.rudn.ru/agronomy/article/view/19700</self-uri><abstract xml:lang="en"><p style="text-align: justify;">Rice is one of the most widespread and cultivated crops in the world. It is necessary to increase the yield of crops or expand their sown areas to resolve a food security problem in Russia. Current impossibility of expanding rice cultivated areas in the Rostov region and the need to maintain and increase its yield require developing new disease-resistant varieties. Rice genotypes with multiple blast resistance genes avoid significant yield losses. Since pyramiding and selection of resistance genes in the same genotype through traditional selection methods are complicated, it is urgent to search for homozygous samples using marker-assisted selection methods. This study was aimed to identify Pi-1, Pi-2, Pi-33 and Pi-ta blast resistance genes in breeding rice samples by MAS-methods. The study used CTAB-method for DNA-isolation, PCR, electrophoresis on agarose and polyacrylamide gels. The resulting gels were stained in a solution of ethidium bromide and photographed in ultraviolet light. To control the presence of blast resistance genes the following parental cultivars were used: C104LAC for the Pi-1 and Pi-33 genes, C101-A-51 for the Pi-2 gene, IR36 for the Pi-ta gene; Novator and Boyarin as controls of non-functional alleles of all studied genes. The 446 selection samples of the seventh generation were analyzed. As a result of the research, 127 rice samples that combine 2 or 3 different blast resistance genes were identified. The Pi-2 and Pi-33 genes combination was identified in 43 samples (1128/1, 1149/3, 1171/2, 1177/3, 1177/4, 1186/4, et al.). Samples with three resistance genes are the most interesting for selection and further breeding. For developing new blast-resistant varieties, we recommend using rice samples with the following combinations of resistance genes Pi-1+Pi-2+Pi-33 (1197/1, 1226/2, 1271/1, 1272/2), Pi-1+Pi-2+Pi-ta (1197/4, 1304/2, 1304/3, 1482/3, 1482/4, 1486/1) and Pi-2+Pi-33+Pi-ta (1064/1, 1064/3, 1281/2, 1281/3, 1281/4, 1282/2, 1283/1, 1283/2, 1284/3).</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Рис - одна из наиболее распространенных сельскохозяйственных культур в мире. Для решения проблемы продовольственной безопасности России необходимо увеличивать урожайность сельскохозяйственных культур или расширять их посевные площади. В связи с невозможностью в настоящее время расширения посевных площадей риса в Ростовской области и необходимостью поддержания и увеличения его урожайности, необходимо создавать новые, устойчивые к болезням сорта. Генотипы риса, имеющие несколько генов устойчивости к пирикуляриозу, избегают значительных потерь урожая. Так как пирамидирование и отбор генов устойчивости в одном генотипе традиционными методами селекции осложнен, актуальным является поиск гомозиготных образцов методами маркер-вспомогательной селекции. Цель исследования - идентификация генов устойчивости к пирикуляриозу Pi-1, Pi-2, Pi-33 и Pi-ta у селекционных образцов риса методами MAS. В исследовании использовались CTAB-метод выделения ДНК, ПЦР, электрофорез на агарозных и полиакриламидных гелях. Полученные гели окрашивались в растворе этидиум бромида и фотографировались в ультрафиолете. В качестве контроля наличия генов устойчивости к пирикуляриозу использовали следующие родительские сорта: C104-LAC - для генов Pi-1 и Pi-33, C101-A-51 - для гена Pi-2, IR36 - для гена Pi-ta; Новатор и Боярин как контроли не функциональных аллелей всех изучаемых генов. Анализировалось 446 селекционных образцов седьмого поколения F7. Выявлено 127 образцов риса, сочетающих 2 или 3 различных гена устойчивости к пирикуляриозу. У 43 образцов (1128/1, 1149/3, 1171/2, 1177/3, 1177/4, 1186/4 и др.) идентифицировано соче- тание генов Pi-2 и Pi-33. Наиболее интересны для отбора и дальнейшей селекционной работы образцы с 3 генами устойчивости. Рекомендуем использовать образцы риса с сочетаниями генов устойчивости Pi-1+Pi-2+Pi-33 (1197/1, 1226/2, 1271/1, 1272/2), Pi-1+Pi-2+Pi-ta (1197/4, 1304/2, 1304/3, 1482/3, 1482/4, 1486/1) и Pi-2+Pi-33+Pi-ta (1064/1, 1064/3, 1281/2, 1281/3, 1281/4, 1282/2, 1283/1, 1283/2, 1284/3) для создания новых устойчивых к пирикуляриозу сортов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>rice blast</kwd><kwd>Pi-1</kwd><kwd>Pi-2</kwd><kwd>Pi-33</kwd><kwd>Pi-ta</kwd><kwd>resistance genes</kwd><kwd>rice</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>пирикуляриоз риса</kwd><kwd>Pi-1</kwd><kwd>Pi-2</kwd><kwd>Pi-33</kwd><kwd>Pi-ta</kwd><kwd>гены устойчивости</kwd><kwd>рис</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Работа выполнена в рамках Государственного задания ФГБНУ «АНЦ  «Донской» № 0706-2019-0003.</institution></institution-wrap><institution-wrap><institution xml:lang="en">The research was carried out within the framework of the State Assignment of Agrarian Science Center ‘Donskoy’ No. 0706-2019-0003.</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Wang F, Wang F, Hu J, Xie L, Yao X. 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