Person: Nazari, K.
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Nazari
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K.
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Nazari, K.
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0000-0001-9348-892X 9 results
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- Exploring the genetic diversity and population structure of wheat landrace population conserved at ICARDA genebank(Frontiers Media S.A., 2022) Tehseen, M.M.; Tonk, F.A.; Tosun, M.; Istipliler, D.; Amri, A.; Sansaloni, C.; Kurtulus, E.; Mubarik, M.S.; Nazari, K.
Publication - The influence of temperature on breaking of diapause and egg hatching in cereal cyst nematode (Heterodera filipjevi)(Agricultural Research Education and Extension Organization, 2021) Majd Taheri, Z.; Tanha Maafi, Z.; Nazari, K.; Zaynali Nezhad, K.; Rakhshandehroo, F.; Dababat, A.A.
Publication - First report of Ug99 race TTKTT of wheat stem rust (Puccinia graminis f. sp. tritici) in Iraq(American Phytopathological Society, 2021) Nazari, K.; Al-Maaroof, E.M.; Kurtulus, E.; Kavaz, H.; Hodson, D.P.; Ozseven, I.
Publication - Comparison of genomic prediction methods for yellow, stem, and leaf rust resistance in wheat landraces from Afghanistan(MDPI, 2021) Tehseen, M.M.; Kehel, Z.; Sansaloni, C.; Lopes, M.; Amri, A.; Kurtulus, E.; Nazari, K.
Publication - Genetic diversity and population structure analysis of Triticum aestivum L. Landrace panel from Afghanistan(MDPI, 2021) Tehseen, M.M.; Istipliler, D.; Kehel, Z.; Sansaloni, C.; Lopes, M.; Kurtulus, E.; Muazzam, S.; Nazari, K.
Publication - First report of Puccina graminis f. sp. tritici Race TTKTT in Ethiopia(American Phytopathological Society, 2020) Hei, N.B.; Tsegaab, T.; Getaneh, W.; Girma, T.; Obsa, C.; Seyoum, A.; Zerihun, E.; Nazari, K.; Kurtulus, E.; Kavaz, H.; Ozseven, I.; Yoseph, A.
Publication - Genome‐wide association study of resistance to PstS2 and Warrior races of Puccinia striiformis f. sp. tritici (stripe rust) in bread wheat landraces(CSSA, 2021) Tehseen, M.M.; Tonk, F.A.; Tosun, M.; Amri, A.; Sansaloni, C.; Kurtulus, E.; Yazbek, M.; Al-Sham'aa, K.; Ozseven, I.; Safdar, L.B.; Shehadeh, A.; Nazari, K.
Publication - Yellow Rust epidemics worldwide were caused by Pathogen Races from divergent genetic lineages(Frontiers, 2017) Ali, S.; Rodriguez-Algaba, J.; Thach, T.; Sorensen, C.K; Hansen, J.; Lassen, P.; Nazari, K.; Hodson, D.P.; Justesen, A.F.; Hovmoller, M.S.We investigated whether the recent worldwide epidemics of wheat yellow rust were driven by races of few clonal lineage(s) or populations of divergent races. Race phenotyping of 887 genetically diverse Puccinia striiformis isolates sampled in 35 countries during 2009–2015 revealed that these epidemics were often driven by races from few but highly divergent genetic lineages. PstS1 was predominant in North America; PstS2 in West Asia and North Africa; and both PstS1 and PstS2 in East Africa. PstS4 was prevalent in Northern Europe on triticale; PstS5 and PstS9 were prevalent in Central Asia; whereas PstS6 was prevalent in epidemics in East Africa. PstS7, PstS8 and PstS10 represented three genetic lineages prevalent in Europe. Races from other lineages were in low frequencies. Virulence to Yr9 and Yr27 was common in epidemics in Africa and Asia, while virulence to Yr17 and Yr32 were prevalent in Europe, corresponding to widely deployed resistance genes. The highest diversity was observed in South Asian populations, where frequent recombination has been reported, and no particular race was predominant in this area. The results are discussed in light of the role of invasions in shaping pathogen population across geographical regions. The results emphasized the lack of predictability of emergence of new races with high epidemic potential, which stresses the need for additional investments in population biology and surveillance activities of pathogens on global food crops, and assessments of disease vulnerability of host varieties prior to their deployment at larger scales.
Publication - First Report of the Ug99 race group of Wheat Stem Rust, Puccinia graminis f. sp. tritici, in Egypt in 2014(American Phytopathological Society (APS), 2016) Patpour, M.; Hovmoller, M.S.; Shahin, A.; Newcomb, M.; Olivera Firpo, P.D.; Yue Jin; Luster, D.G.; Hodson, D.P.; Nazari, K.; Azab, M.Since the first detection of race TTKSK (Ug99) of Puccinia graminis f. sp. tritici in Uganda in 1998 (Pretorius et al. 2000), it has been a priority to track its further spread to other wheat growing areas. To date, 10 variants in the Ug99 race group have been detected in 12 countries, i.e., Uganda, Kenya, Ethiopia, Sudan, Tanzania, Eritrea, Rwanda, South Africa, Zimbabwe, Mozambique, Yemen and Iran (Patpour et al. 2015). In the 2014 crop season, the presence of virulence to Sr31 in Egypt was suspected based on preliminary field observations of high infection on sources of Sr31 planted as international stem rust trap nursery at 1) Sakha Agricultural Research Station in Kafrelsheikh (31.094059° N, 30.933899° E), 2) Al-Sharqia (30.601400° N, 31.510383° E), and 3) Nubaria (30.91464° N, 29.95543° E). At Sakha, wheat cv. PBW343 (carrying Sr31) was scored 30MS-S, and the monogenic line Benno Sr31/6*LMPG was scored 20MS-S at Al-Sharqia. Three samples from each of these lines were sent to the Global Rust Reference Center (GRRC, Denmark). At Nubaria, stem rust was observed on wheat cvs. Misr-1, Misr-2, Giza 168 and Giza 171, and infected samples were collected and sent under permit to the Foreign Disease-Weed Science Research Unit (MD, USA). Urediniospores of each sample were recovered on susceptible wheat cv. Morocco and McNair 701. Twenty-three and 11 single pustule isolates were derived and analyzed at GRRC and USDA-ARS Cereals Disease Laboratory, respectively, using 20 North American stem rust differential lines following standard race-typing procedure and infection type (IT) criteria determining virulence and avirulence (Jin et al. 2008). In addition, three supplemental tester lines of Siouxland (carrying Sr24+Sr31), Sisson (carrying Sr31+Sr36), and Triumph 64 (donor of SrTmp) were included to confirm virulence/avirulence to Sr24, Sr31, Sr36, and SrTmp. The experiments were repeated two to three times. Three races in the Ug99 race group were detected; TTKST (four isolates, IT 3+4 for Sr24, Sr31 and cv. Siouxland) from Al-Sharqia, TTKTK (13 isolates, IT 4 for Sr31, SrTmp and cv. Triumph 64) from Sakha, and TTKSK (2 isolates, IT 4 for Sr31) from Nubaria. This is the first confirmation of races in the Ug99 race group in Egypt, thereby extending the geographical distribution of Ug99-related races. Since Egypt may play a role as green-bridge for Puccinia graminis f. sp. tritici between East and North African countries and the wheat belts in the Middle East and Mediterranean region, the rust surveillance efforts should be intensified in affected countries as well as in neighboring regions.
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