In this study, we analyzed distribution of species of the genus Gymnosporangium in the mountain regions of Uzbekistan, including the Western Tien Shan and Pamir-Alay. Four species of Gymnosporangium (G. confusum, G. sabinae, G. fusisporum, and G. turkestanicum) are reported for Uzbekistan. The telial hosts of these rust fungi are species of the genus Juniperus, while aecial hosts in Uzbekistan are representatives of the genera Cotoneaster, Crataegus, Sorbus, and Pyrus (all Rosaceae). It has been found that the distribution patterns of species of Gymnosporangium within mountain areas of Uzbekistan depend largely on distribution of juniper woodlands because representatives of the genus Juniperus as telial hosts play a major role in the life cycle of these fungi. In that regard, Gymnosporangium species have not yet been recorded in the Nuratau Nature Reserve despite other favorable conditions for these rust fungi in this territory.

Keywords: aecia, Juniperus, life cycle, Pucciniales, host plant, rust fungi, telia

Full text: PDF (Eng) 3.83M

1. Aime M.C. 2006. Toward resolving family-level relationships in rust fungi (Uredinales). Mycoscience, 47(3): 112–122. https://doi.org/10.1007/s10267-006-0281-0
2. Cummins G.B., HiratsukaY. 2003. Illustrated Genera of Rust Fungi. St. Paul, MN: American Phytopathological Society, 240 pp.
3. Deacon J.W. 2006. Fungal Biology. 4^th ed. Malden, MA: Wiley-Blackwell Publishing, 371 pp.
4. Dodge B.O. 1915. The effect of the host on the morphology of certain species of Gymnosporangium. Bulletin of the Torrey Botanical Club, 42: 519–544. https://www.jstor.org/stable/pdf/2479727.pdf
5. Dodds P.N., Rafiqi M., Gan P.H.P., Hardham A.R., Jones D.A., Ellis J.G. 2009. Effectors of biotrophic fungi and oomycetes: pathogenicity factors and triggers of host resistance. New Phytologist, 183: 993–1000. https://doi.org/10.1111/j.1469-8137.2009.02922.x
6. Fernández J.L., Llorens I., Alvarado P. 2016. Evidence for Gymnosporangium atlanticum in Europe. Mycotaxon, 131(2): 357–366. https://doi.org/10.5248/131.357
7. Gafforov Yu.S., Abdurazzoqov A., Yarasheva M., Ono Y. 2016. Rust fungi from the Fergana Valley, Chatkal and Kurama Mountain Ranges in Uzbekistan. Stapfia, 105: 161–175.
8. Gjaerum H.B., Gauslaa Y., Talg V. 2008.Gymnosporangium sabinae found in Norway. Plant Pathology, 57: 376. https://doi.org/10.1111/j.1365-3059.2007.01730.x
9. Guyot A.L., Malençon G. 1957. Urédinées du Maroc. Travaux de l'Institut Scientifique Chérifien: Série Botanique, 11: 1–184.
10. Helfer S. 2005. Overview of the rust fungi (Uredinales) occurring on Rosaceae in Europe. Nova Hedwigia, 81(3–4): 325–370. https://doi.org/10.1127/0029-5035/2005/0081-0325
11. Kellerhals M., Szalatnay D., Hunziker K., Duffy B., Nybom H., Ahmadi-Afzadi M., Höfer M., Richter K., Lateur M. 2012. European pome fruit genetic resources evaluated for disease resistance. Trees, 26: 179–189. https://doi.org/10.1007/s00468-011-0660-9
12. Kuprevich V.F., Ulyanishchev V.I. 1975. Opredelitel rzhavchinnykh gribov SSSR. Chast 1. Sem. Melampsoraceae i nekotorye rody sem. Pucciniaceae. Minsk: Nauka i tekhnika, 336 pp.
13. Lāce B. 2017. Gymnosporangium species – an important issue of plant protection. Proceedings of the Latvian Academy of Sciences, Section B. Natural, Exact, and Applied Sciences, 71(3): 95–102. https://doi.org/10.1515/prolas-2017-0017
14. Liu Y., Gafforov Y., Liang Y.M. 2019. Taxonomy and phylogenetic position of Phragmidium altaicum, a newly described rust fungus on Rosa species. Phytotaxa, 423 (3): 187–194. https://doi.org/10.11646/phytotaxa.423.3.7.
15. Mustafaev I.M., Iminova M.M. 2018. Puccinia rhamni Kupr. – novyi rzhavchinnyi grib mikobioty Uzbekistana. Universum: khimiya i biologiya, 11(53): 11–12.
16. Mustafaev I.M., Iminova M.M., Sherkulova J.P., Xolmurodova T.N.,Teshaboeva Sh.A. 2018. New records of rust fungi of trees and shrubs from Uzbekistan. European Science Review, 7(8): 19–21. https://doi.org/10.29013/ESR-18-7.8-19-21
17. Mustafaev I.M., Islomiddinov Z.Sh., Iminova M.M. 2019. Distribution of rust fungus Phragmidium tuberculatum Jul. in Uzbekistan. Scientific Bulletin of Namangan State University, 1(6): 160–165. https://uzjournals.edu.uz/namdu/vol1/iss6/25
18. Ramazanova S.S., Faizieva F.Kh., Sagdullaeva M.Sh., Kirgizbaeva Kh.M., Gaponenko N.I. 1986. Flora of the Fungi of Uzbekistan, vol. 3. Rzhavchinnye griby. Tashkent: Fan, 232 pp.
19. Rakhimova E.B., Nam G.A., Yermekova B.D., Abiyev S.A., Djetigenova U.K., Esengulova B.J. 2015. Key to the rust fungi of Kazakhstan. Turczaninowia, 18(3): 5–65. https://doi.org/10.14258/turczaninowia.18.3.1
20. Tojibaev K.Sh., Beshko N.Yu., Popov V.A., Jang C.G., Chang K.S. 2017. Botanical geography of Uzbekistan. Pocheon, Republic of Korea: Korea National Arboretum, 250 pp.
21. Toome M. 2010. Leaf rust (Melampsora) on willows: ecological and plant response studies. Ph.D. thesis. Tartu: Estonian University of Life Sciences, 123 pp. https://dspace.emu.ee/xmlui/handle/10492/130
22. Zaprometov N.G. 1928. Materialy po mikoflore Sredney Azii, vyp. 2. Tashkent, 71 pp.