Abstract
Differential impact of the temperature stress and soil drought on lipoxygenase activity in winter rye plants
Highlights
E xtreme temperatures and soil drought are among the most common abiotic stressors that adversely affect plant growth, development, and yield
The maximum LOX activity was recorded for membrane-bound 9-LOX1 from the shoots
After short-term hypothermia the activity of 9-LOX1 and 9-LOX2 enhanced almost by 1.5 fold in the shoots, and by 1.2 fold in the roots
Summary
E xtreme temperatures and soil drought are among the most common abiotic stressors that adversely affect plant growth, development, and yield. Lipid signalling compounds include multifunctional oxylipins – products of the lipoxygenase (LOX) cascade of oxidation of polyunsaturated fatty acids (PUFA). Their occurrence is considered as a sign of damage and as a trigger mechanism of adaptive response [4]. Oxylipins have been identified in plants of different taxonomic groups They are involved in the regulation of growth, development, the formation of responses to environmental signals, and the attack of pathogens [4, 6]. Fatty acid hydroperoxides can be further utilized with the involvement of a number of enzymes resulting in the production of a significant amount of various oxylipins (jasmonates, traumatin, aldehydes, ketols, epoxyalcohols, divinyl ether, etc.) that have specific biological functions [4, 6]
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