Stress temperature and soil drought effects on amino acid composition in winter wheat

• Дата: 2020
• Автори: Babenko, L.M., Romanenko, K.O., Kosakivska, I.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Видавничий дім "Академперіодика" НАН України 2020
• Назва видання: Доповіді НАН України
• Теми: Екологія
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/170342
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Stress temperature and soil drought effects on amino acid composition in winter wheat / L.M. Babenko, K.O. Romanenko, I.V. Kosakivska // Доповіді Національної академії наук України. — 2020. — № 2. — С. 87-92. — Бібліогр.: 15 назв. — англ.

The effect of shortterm high (40 °C, 2 h) and positive low (4 °C, 2 h) temperatures, as well as simulated moderate soil drought, on the total free amino acid and proline contents is studied under controlled conditions on organs of 14dayold Triticum aestivum L. plants, the cultivar Podolyanka. The contents of free amino acids and proline are found to be higher in shoots of control plants and are, respectively, 18.29 mg/g and 0.85 mg/g of dry weight. Under simulated moderate soil drought conditions, the free amino acids and proline contents increase in shoots by 17 % and 71 %, respectively, while in the roots by 50 % and 61 %. During a shortterm hyperthermia, the increases in free amino acid and proline content in shoots by 12 and 47 %, respectively, and in roots by 30 % and 23 %, respectively, are also observed. The response to a shortterm hyperthermia was less pronounced. The involvement of free amino acids and proline in developing the resistance to abiotic stressors in winter wheat is discussed.