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2010, Phytopathology
Journal of Integrative Agriculture
Identification of eight Berberis species from the Yunnan-Guizhou plateau as aecial hosts for Puccinia striiformis f. sp. tritici, the wheat stripe rust pathogen2021 •
2018 •
Wheat (Triticum sp. L.), as one of the first domesticated food crops, is the basic staple food for a large segment of population around the world. The crop though is susceptible to many fungal pathogens. Stripe rust is an important airborne disease caused by Puccinia striiformis (Pst) and is widespread wherever wheat is cultivated throughout the world, in temperate-cool and wet environments. The causal fungus of stripe rust or yellow rust is an obligate parasite that requires another living host to complete its life cycle. Pst includes five types of spores in the life cycle on two distinct hosts. Stripe rust is distinguished from other rusts by the dusty yellow lesions that grow systemically in the form of streaks between veins and on leaf sheaths. The importance and occurrence of stripe rust disease varies in cultivated wheat, depending on environmental conditions (moisture, temperature, and wind), inoculum levels and susceptible host varieties. Transcaucasia was previously thought to be the center of origin for the pathogen. However, new findings further underlined Himalayan and near-Himalayan regions as center of diversity and a more tenable center of origin for P. striiformis. Long-distance dispersal of stripe rust pathogen in the air and occasionally by human activities enables Pst to spread to new geographical areas. This disease affects quality and yield of wheat crop. Early seeding, foliar fungicide application and cultivation of resistant varieties are the main strategies for its control. The emergence of new races of Pst with high epidemic potential which can adapt to warmer temperatures has expanded virulence profiles. Subsequently, races are more aggressive than those previously characterized. These findings emphasize the need for more breeding efforts of resistant varieties and reinforcement of other management practices to prevent and overcome stripe rust epidemic around the world.
Plant Disease
Wheat Stripe Rust Epidemics and Races of Puccinia striiformis f. sp. tritici in the United States in 20002002 •
Stripe (yellow) rust, caused by Puccinia striiformis f.sp. tritici, is one of the major factors reducing the productivity of wheat crop. The region of Central Asia is one of the most important wheat areas in the world. As there was practically no breeding work in the past on stripe rust, most varieties released for commercial production are susceptible to the disease. This problem is especially important for Kazakhstan because of changing epidemic situations and the few resistant wheat cultivars. In order to effectively combat stripe rust, it is necessary to find donors of resistance and study genetics of resistance. Seedlings of winter wheat cultivars and advanced breeding lines from Central Asia were tested for resistance to five races of P. striiformis f.sp. tritici that are currently prevalent or were prevalent in the past in the USA. More virulent US races of P. striiformis f.sp. tritici for wheat germplasm from Central Asia were represented by PST-17 and PST-100. Cultivars 'Taza', 'Krasnovodopadskaya 25', and 'Ulugbek 600' have all-stage (also called seedling) resistance. The most effective resistant sources against stripe rust in this region are those of genes Yr2+, Yr4+, Yr5, Yr10, and Yr15. Resistance genes Yr1, Yr6, Yr7, Yr8, Yr11, Yr12, and YrA became ineffective in Kazakhstan were postulated in many cultivars. The most virulent pathotypes in Kazakhstan were 7E159, 15159, 47143 and 111E158, which are virulent to 9 or 10 Yr-genes of the 16 Yr genes studied. The use of these pathotypes for evaluating wheat germplasm for resistance could help to improve breeding for stripe rust resistance. The number of genes and characters of gene interaction conferring resistance to stripe rust of the most important wheat genotypes were determined. The genetic studies identified genes conferring resistance to stripe rust in commercial varieties. Based on genes in resistance donors, we should be able to develop cultivars possessing effective gene or combination of genes regarding to known virulent races of the pathogen.
Journal of General Plant Pathology
Gene-based analysis of Puccinia species and development of PCR-based marker to detect Puccinia striiformis f. sp. tritici causing yellow rust of wheat2017 •
2013 •
Wheat stripe rust (yellow rust [Yr]), caused by Puccinia striiformis f. sp. tritici, is an economically important disease of wheat worldwide. Virulence information on P. striiformis f. sp. tritici populations is important to implement effective disease control with resistant cultivars. In total, 235 P. striiformis f. sp. tritici isolates from Algeria, Australia, Canada, Chile, China, Hungary, Kenya, Nepal, Pakistan, Russia, Spain, Turkey, and Uzbekistan were tested on 20 single Yr-gene lines and the 20 wheat genotypes that are used to differentiate P. striiformis f. sp. tritici races in the United States. The 235 isolates were identified as 129 virulence patterns on the single-gene lines and 169 virulence patterns on the U.S. differentials. Virulences to YrA, Yr2, Yr6, Yr7, Yr8, Yr9, Yr17, Yr25, YrUkn, Yr28, Yr31, YrExp2, Lemhi (Yr21), Paha (YrPa1, YrPa2, YrPa3), Druchamp (Yr3a, YrD, YrDru), Produra (YrPr1, YrPr2), Stephens (Yr3a, YrS, YrSte), Lee (Yr7, Yr22, Yr23), Fielder (Yr6, Yr...
Fungal Biology and Biotechnology
Multiple genotypes within aecial clusters in Puccinia graminis and Puccinia coronata: improved understanding of the biology of cereal rust fungi2021 •
During the periodic purity checks of pathotypes 107-1(45R35=JCGPL) and 20(5R27=SGQPL) of Puccinia triticina in national repository at Shimla, India, mixtures of infection types were observed on the differential Lr3 and Lr15 , respectively. Single pustule isolations and further pure cultures in both the cases yielded new pathotypes designated as 57(45R39= KGTPL) and 20-2(57R27= SHKPL). Pathotype 57 was one step gain in virulence on Lr3 in 107-1 whereas 20-2 on Lr15 in mother culture of pathotype 20. The difference of virulence on one gene to each mother culture and their non occurrence in the field samples is indicative of mutation for virulence in situ . To ascertain the novelty of new pathotypes, detailed study on differentials, avirulence/virulence structure, DNA polymorphism using SSR markers, and other related information is presented in this publication. The new cultures are being maintained as PrtI 57 and PrtI 20-2 in the repository.
2017 •
Stripe rust, caused by Puccinia striiformis f. sp. tritici, is one of the most important diseases of wheat in Ethiopia. In total, 97 isolates were recovered from stripe rust samples collected in Ethiopia in 2013 and 2014. These isolates were tested on a set of 18 Yr single-gene differentials for characterization of races and 7 supplementary differentials for additional information of virulence. Of 18 P. striiformis f. sp. tritici races identified, the 5 most predominant races were PSTv-105 (21.7%), PSTv-106 (17.5%), PSTv-107 (11.3%), PSTv-76 (10.3%), and PSTv-41 (6.2%). High frequencies (>40%) were detected for virulence to resistance genes Yr1, Yr2, Yr6, Yr7, Yr8, Yr9, Yr17, Yr25, Yr27, Yr28, Yr31, Yr43, Yr44, YrExp2, and YrA. Low frequencies (<40%) were detected for virulence to Yr10, Yr24, Yr32, YrTr1, Hybrid 46, and Vilmorin 23. None of the isolates were virulent to Yr5, Yr15, YrSP, and YrTye. Among the six collection regions, Arsi Robe and Tiyo had the highest virulence d...
2011 •
Nature and Science of Sleep
Short- and long-term health consequences of sleep disruptionInternational Journal of Reproduction, Contraception, Obstetrics and Gynecology
Bone mineral changes during pregnancy: a cross-sectional studyAmerican Journal of Physiology-Regulatory, Integrative and Comparative Physiology
Role of GABA within the nucleus tractus solitarii in the hypoxic ventilatory decline of awake rats2001 •
Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics
Protective spin-labeled fluorenes maintain amyloid beta peptide in small oligomers and limit transitions in secondary structure2015 •
2013 •
2021 •
2016 •
Journal of Business Research - Turk
Sivil Havacılık Sektöründe Kabin Personelinin Sosyal Kaygı Düzeyleri ile Örgütsel Bağlılık Arasındaki İlişkinin İncelenmesine Yönelik Bir Alan Araştırması - A Field Research on The Investigation of The Relationship Between The Social Anxiety Levels and Organizational Commitment of The Cabin Perso...2018 •
KAREBA : Jurnal Ilmu Komunikasi
Twitter Presiden dan Representasi Kebijakan Pemerintahan Indonesia - Analisis Isi Twitter Presiden Jokowi2019 •
2012 •
arXiv (Cornell University)
Plethysm Products, Element and Plus Constructions2022 •
2017 •
Didaktik : Jurnal Ilmiah PGSD STKIP Subang
Penerapan Model Problem Based Learning (PBL) Pada Pembelajaran Tematik Terpadu DI Kelas V Sekolah DasarJurnal Penelitian Pembelajaran Matematika Sekolah (JP2MS)
Perbedaan Hasil Belajar Matematika Menggunakan Model Pembelajaran Savi (Somatic, Auditory, Visual, Intellectuall) Dengan Pendekatan Saintifik Pada Siswa Kelas VIII SMP N 4 Kota Bengkulu2019 •
2013 •
Archivos de la Sociedad Española de Oftalmología
Estudio retrospectivo de parálisis facial periférica en un hospital de tercer nivel a lo largo de 3 años2023 •