en عمومى General پژوهشي Original article <div><strong>Background and Aims:</strong> Newcastle disease (ND) is one of the contagious viral diseases in avian species. Recently, several ND outbreaks in pigeon caused by pigeon paramyxovirus serotype-1 (PPMV-1) have been reported din limited numbers from Iran and phylogenetic studies have been conducted on partial sequence of NDV fusion (F) gene.<br> <strong>Materials and Methods:</strong> In the present study, ten PPMV-1, named Pigeon_paramyxovirus1_isolate_pigeon/Iran/UT_EGV1-10/2018, isolated from infected pigeons, and were subjected to partial sequencing. All isolates showed MDT of 74-80 hours, thus categorizing them as mesogenic.<br> <strong>Results and Conclusion: </strong>The phylogenetic analysis based on the F gene sequence revealed the isolates belong to XXI.1.1 subgenotype. According to BLAST results, the partial genome of UT-EGV1-10 had high homology with some Russian and Egyptian strains (the highest was 96.55%). The information obtained from this study can be useful in preventive measures for ND caused by PPMV-1 in pigeons.</div> Pigeon paramyxovirus serotype-1 (PPMV-1), Partial sequencing, Fusion gene, Phylogenetic Study, Epidemiology, Iran 12 20 http://journal.isv.org.ir/browse.php?a_code=A-10-228-4&slc_lang=en&sid=1 Reza Esmaeelzadeh Dizaji Rezaesmailzade@rocketmail.com 10031947532846007141 10031947532846007141 No Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Arash Ghalyanchi Langeroudi arashghalyanchi@gmail.com 10031947532846007142 10031947532846007142 No Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Medi Vasfi Marandi mvmarand@ut.ac.ir 10031947532846007143 10031947532846007143 Yes Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Hossein Hosseini hosseini.ho@gmail.com 10031947532846007144 10031947532846007144 No Department of Clinical Sciences, Faculty of Veterinary Medicine, Islamic Azad University, Karaj Branch, Karaj, Iran Vahid Karimi Vkarimi@ut.ac.ir 10031947532846007145 10031947532846007145 No Department of Poultry Diseases, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Aidin Molouki a.molouki@rvsri.ac.ir 10031947532846007146 10031947532846007146 No Department of Poultry Diseases, RAZI Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran Mohammad hossein Fallah Mehrabadi mhf2480@yahoo.com 10031947532846007147 10031947532846007147 No Department of Poultry Diseases, RAZI Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran