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2017, Journal of Plant Pathology
During 2012-2013, yellow rust samples from barley, wild barley (Hordeum morinum) and wheat from different provinces of Iran were used to inoculate Afzal (barley cultivar) and Morocco (wheat cultivar), susceptible to all Puccinia striiformis f. sp. hordei (Psh) and Puccinia striiformis f. sp. tritici (Pst) isolates, respectively. The isolates were identified as Psh or Pst based on virulence on barley or wheat differential seedlings, respectively (Chen et al., 1995). In order to study of genetic diversity, we used 18 isolates representative of different pathotypes from different hosts. The genetic diversity was assessed using five simple sequence repeat (SSR) markers and by examining intergenic spacer 1 (IGS1) region. A total of 14 genotypes were identified within the studied isolates, of which eight genotypes related to Psh and six genotypes related to Pst. The multiplied fragments of some SSR loci, in particular RJ2N, showed that some isolates have alleles in common with isolates of...
American Journal of Plant Sciences
Molecular Genetic Diversity in Iranian Populations of <i>Puccinia triticina</i>, the Causal Agent of Wheat Leaf Rust2013 •
Wheat stem rust caused by Puccinia graminis f. sp. tritici is one of the most destructive wheat diseases worldwide. Identifying stem rust races in general, Ug99 lineage particularly, and determining resistance genes are critical goals for disease assessment. Thirty wheat varieties and monogenic lines with major stem rust resistance genes (Sr) were examined here over the course of three succeeding seasons from 2020 to 2022. Fourteen stem rust races have been identified in ten African countries, as well as Central and West Asia and North Africa (CWANA) and ten European countries. The Ug99 group (Clade I) included four races (TTKSK, TTKST, TTKTK, and TTKTT) and was reported in five African countries (Egypt, Kenya, Rwanda, Tanzania, and Uganda) and Iran, but none of the European countries. On the other hand, none of the races in Clade III-B (TTRTF) and Clade IV-B (TKTTF and TTTTF) were found in Egypt. Furthermore, Egyptian races were clustered separately from races identified from other...
2019 •
2020 •
Yellow rust is the major wheat disease in central West Asia and North Africa. Recently, severe epidemics have occurred, with major yield losses in 2010–2011 in Lebanon and Syria. We conducted an extensive field survey, with a collection of 273 samples of Puccinia striiformis f. sp. tritici, to explore the origin of these epidemics. All samples were genotyped with 20 microsatellite markers, and 54 isolates were pathotyped. The population was dominated by the PstS2 lineage, which has spread worldwide since 2000 and displays considerable pathotype diversity (10 pathotypes). The 22 multilocus genotypes (MLGs) detected corresponded to variants of the clonal lineage PstS2, but they differed from the common PstS2 genotype found in the worldwide study conducted between 1981 and 2010. No strong differentiation was observed between Lebanon and Syria. The dominant MLG in Syria was common to both countries. Nine MLGs were found exclusively in the Syrian population and four were restricted to th...
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 •
Journal of Food Science and Engineering
Study Genetic Variation Using DNA Molecular Markers and Identification Physiological Races of Wheat Stripe (yellow) Rust Puccinia striiformis f.sp tritici during 2010-2014 in Some Regions of Syria2011 •
Leaf rust of wheat, caused by Puccinia triticina, is a common and widespread disease in the Middle East. The objective of this study was to determine whether genetically differentiated groups of P. triticina are present in the Middle East region and to compare the population from the Middle East with the previously characterized population from Central Asia to determine whether genetically similar groups of isolates are found in the two regions. In total, 118 isolates of P. triticina collected from common wheat and durum wheat in Egypt, Israel, Turkey, Ethiopia, and Kenya were tested for virulence on 20 lines of wheat with single genes for leaf rust resistance and for molecular genotypes with 23 simple-sequence repeat (SSR) markers. After removal of isolates with identical virulence and SSR genotype in each country, 103 isolates were retained for further analysis. Clustering of SSR genotypes based on two-dimensional principal coordinates and virulence to wheat differential lines gro...
Journal of Wheat Research
Detection of Yr27 virulence in Puccinia striiformis f.sp. tritici populations on wheat in IraqThis study was conducted to detect any possible changes in virulence spectrum of Puccinia striiformis f. sp. tritici population in Iraq. Biological trap nurseries of yellow rust were planted at different locations representing most of wheat growing areas in Iraq. The plants were exposed to the natural population of the pathogen in the fields. Disease was scored as severity and infection type on each genotype at different stages of wheat development. Yellow rust development was calculated on the local susceptible wheat cultivars Araz, and Saberbeg. yellow rust samples collected from the commercial wheat fields at different locations were sent to the Global Rust Center for race analyses. Virulence analysis of Puccinia striiformis f. sp. tritici population, revealed detection of virulence against the known resistance genes Yr2, Yr6, Yr7, Yr9, Yr18, YrA, Yr21, Yr25, Yr27, Yr28, Yr29 and Yr31 at adult plant stage in Sulaimania, while virulence against the known resistance genes Yr1, Yr2, Yr4, Yr5, Yr7, Yr9, Yr SD, YrSu, YrND, Yr32, YrA, Yr21, Yr27, Yr28, Yr31, were detected in the natural populations of P. striiformis f. sp. tritici at adult plant stage in Nineveh. Out of 34 rust samples sent to GRRC for race analysis, 12 samples were only recovered while 22 samples were failed to recover. Breakdown of resistant genes Yr27 and Yr25 was further confirmed at seedling stage. Infection rate value of yellow rust during the epidemic on Saber Beg (r- value= 0.337) was higher than Araz (0.187).
International Journal of Molecular Sciences
Study of Inheritance and Linkage of Virulence Genes in a Selfing Population of a Pakistani Dominant Race of Puccinia striiformis f. sp. triticiWheat stripe rust is a severe threat of almost all wheat-growing regions in the world. Being an obligate biotrophic fungus, Puccinia striiformis f. sp. tritici (PST) produces new virulent races that break the resistance of wheat varieties. In this study, 115 progeny isolates were generated through sexual reproduction on susceptible Himalayan Berberis pseudumbellata using a dominant Pakistani race (574232) of PST. The parental isolate and progeny isolates were characterized using 24 wheat Yr single-gene lines and ten simple sequence repeat (SSR) markers. From the one-hundred-and-fifteen progeny isolates, 25 virulence phenotypes (VPs) and 60 multilocus genotypes were identified. The parental and all progeny isolates were avirulent to Yr5, Yr10, Yr15, Yr24, Yr32, Yr43, YrSp, YrTr1, YrExp2, Yr26, and YrTye and virulent to Yr1, Yr2, Yr6, Yr7, Yr8, Yr9, Yr17, Yr25, Yr27, Yr28, YrA, Yr44, and Yr3. Based on the avirulence/virulence phenotypes, we found that VPs virulent to Yr1, Yr2, Yr9, Yr...
2014 •
Scientific Reports
Bioprocessing of common pulses changed seed microstructures, and improved dipeptidyl peptidase-IV and α-glucosidase inhibitory activities2019 •
2012 •
The Journal of Neuroscience
Monoamine Oxidases Regulate Telencephalic Neural Progenitors in Late Embryonic and Early Postnatal Development2010 •
Sustainability
Board Gender Diversity and Corporate Social Performance in Different Industry Groups: Evidence from China2021 •
2020 •
Biomedical Research-tokyo
Evaluation of the cement/dentin thickness of the mesiobuccal root of maxillary first molars by optical microscopy in a Chilean sample2017 •
2018 •
RNA Biology
Small molecule inhibitor of Igf2bp1 represses Kras and a pro-oncogenic phenotype in cancer cells2021 •
JPBIO (Jurnal Pendidikan Biologi)
Traditional Ritual of Karue Ase: Local wisdom and cultural conservation in the Labian Ira'ang Society2022 •
2004 •
2016 •
2017 •
Revista Colombiana De Sociologia
Crisis del sistema de gobierno en las universidades públicas colombianas. Aportes a una sociología del poder en las universidades2012 •