There is a number of global problems in the agricultural sector of Ukraine, including environmental factors such as climate change, floods and droughts, which cause damage to plant tissues and significant losses of food crops. A significant obstacle to the development of agriculture and food security in Ukraine are biotic factors, in particular pathogenic bacteria, viruses and microfungi. Fusarium is the most widespread and aggressive pathogen to grain crops, especially to wheat. These obstacles can be overcome by introducing wheat varieties resistant to Fusarium into agronomic practice. However, selection of resistant wheat to fusariosis along the path of traditional centuries-old selection is a laborious and expensive road. Therefore, the search for new effective tools that will facilitate the selection of plants with desirable characteristics at the early stages of breeding programs is an urgent task. Methods. Wheat varieties of different resistance to abiotic and biotic factors in field conditions were used in laboratory studies: resistant, semiresistant and non-resistant. Ethylene and fatty acids were determined by gas chromatographic methods. The results. Patterns of ethylene and fatty acid synthesis in winter wheat varieties with different resistance to biotic and abiotic factors were revealed. Resistant varieties are characterized by a significantly higher content of these compounds compared to non-resistant varieties. A similar regularity was found in relation to the lodging of plants: the higher the content of these compounds, the greater the resistance to lodging. Conclusions and perspectives. This article describes two methods of assessing the resistance of winter wheat to abiotic and biotic stresses, which can be implemented in breeding programs
winter wheat; fusarium; ethylene; fatty acids
[1] Ajdanian, L., Babaei, M., Arouiee, H., Nemati, H., Astatkie, T., & Lajayer, B.A. (2023). Chapter 6 – Role of ethylene in regulating physiological and molecular aspects of plants under abiotic stress. In A. Sharma, et al. (Eds). The Role of Growth Regulators and Phytohormones in Overcoming Environmental Stress (pp. 113-135). Cambridge: Academic Press. doi: 10.1016/B978-0-323-98332-7.00009-3.
[2] Chen, Y., Kistler, H.C., & Ma, Z. (2019). Fusarium graminearum trichothecene mycotoxins: Biosynthesis, regulation, and management. Annual Review of Phytopathology, 57, 15-39. doi: 10.1146/annurev-phyto-082718-100318.
[3] Farber, C., Mahnke, M., Sanchez, L., & Kurouski, D. (2019). Advanced spectroscopic techniques for plant disease diagnostics. A review. Trends in Analytical Chemistry, 118, 43-49. doi: 10.1016/j. trac.2019.05.022.
[4] Hay, W.T., Anderson, J.A., McCormick, S.P., Hojilla-Evangelista, M.P., Selling, G.W., Utt, K.D., Bowman, M.J., Doll, K.M., Ascherl, K.L., Berhow, M.A., & Vaughan, M.M. (2022). Fusarium head blight resistance exacerbates nutritional loss of wheat grain at elevated CO2. Scientific Reports, 12(1), article number 15. doi: 10.1038/s41598-021-03890-9.
[5] Impacts of Europe’s changing climate – 2008 indicator-based assessment. (2008).
Retrieved from https://www.eea.europa.eu/publications/eea_report_2008_4/pp20-36CC2008l_ch1to4_IntroductoryChapters.pdf.
[6] International Climate Change Information and Research Programme. (n.d.). Retrieved from https://www.haw-hamburg.de/en/ftz-nk/programmes-and-networks/iccirp/.
[7] Kryuchkova, L.O., Makoveychuk, T.I., Yavorska, V.K., & Kurchii, B.A. (2006). Salicylic acid content in the leaves of winter wheat seedlings of different resistance to phytopathogenes. Physiology and Biochemistry of Cultivated Plants, 38(1), 45-52.Retrieved from https://irbis-nbuv.gov.ua/publ/REF-0000178318.
[8] Kurchii, V.M., & Kurchii, B.A. (2000). Decomposition of acetylcholine with ethylene formation in vitro. Possible free radical mechanism of acetylcholine action. Ukrainian Biochemical Journal, 72(3), 69-72. Retrieved from https://pubmed.ncbi.nlm.nih.gov/11200478/.
[9] Liljenberg, C., & Kates, M. (1985). Changes in lipid composition of oat root membranes as a function of water-deficit stress. Canadian Journal of Biochemistry and Cell Biology, 63(2), 77-84. doi: 10.1139/o85-011.
[10] Lim, G.H., Singhal, R., Kachroo, A., & Kachroo, P. (2017). Fatty acid- and lipid-mediated signaling in plant defense. Annual Review of Phytopathology, 55, 505-536.
doi: 10.1146/annurev-phyto-080516-035406.
[11] Miedaner, T., & Juroszek, P. (2021). Climate change will influence disease resistance breeding in wheat in Northwestern Europe. Theoretical and Applied Genetics, 134(6), 1771-1785. doi: 10.1007/s00122-021-03807-0.
[12] Stakeholders say global burden of crop loss would help direct future agricultural policy and practice. (2021). Retrieved from https://agrilinks.org/post/stakeholders-say-global-burden-crop-loss-would-help-direct-future-agricultural-policy-and.
[13] Timmusk, S., Nevo, E., Ayele, F., Noe, S., & Niinemets, Ü. (2020). Fighting Fusarium pathogens in the era of climate change: A conceptual approach. Pathogens, 28(9), article number 419. doi: 10.3390/pathogens9060419.
[14] UN’s the 2030 Agenda for sustainable development. (n.d.). Retrieved from https://sdgs.un.org/2030agenda.
[15] Wilson, W., Dahl, B., & Nganje, W. (2018). Economic costs of Fusarium head blight, scab and deoxynivalenol. World Mycotoxin Journal, 11(2), 291-302.
doi: 10.3920/WMJ2017.2204.
[16] Xiao, R., Zou, Y., Guo, X., Li, H., & Lu, H. (2022). Fatty acid desaturases (FADs) modulate multiple lipid metabolism pathways to improve plant resistance. Molecular Biology Reports, 49, 9997-10011. doi: 10.1007/s11033-022-07568-x.