Lyudmila P. Simova-Stoilova

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529 Drought stress is an important environmental factor constraining crop productivity. Wheat is essential nourishment for more than 1/3 of the world population and crop yield will be considerably influenced in the perspective of global climate change and limitation of water resources in the environment (Chaves and Oliveira 2004). Much of the injury on(More)
Antioxidant response to drought in red (Trifolium pratense L., cv. “Start”) and white clover (Trifolium repens L, cv. “Haifa” and cv. “Debut”) grown as soil cultures was evaluated in water-deprived and recovered plants. Drought provoked oxidative stress in leaves confirmed by the considerable changes in electrolyte leakage, malondialdehyde, hydrogen(More)
Wheat plants with a fully developed first leaf were subjected to severe but recoverable water stress. Leaves from drought tolerant (Katya and Zlatitza) and drought sensitive (Sadovo and Miziya) varieties in control, drought and recovery conditions were used for the experiments. The physiological response of drought tolerant varieties did not differ from the(More)
Intracellular proteases could be involved in stress induced protein degradation and metabolism reorganization. Data on this topic are still quite limited. Eight varieties of winter wheat (Triticum aestivum L.) with different field drought resistance were examined in this study. Plants were grown as soil cultures in a growth chamber and watered daily to(More)
Holm oak is a dominant tree in the western Mediterranean region. Despite being well adapted to dry hot climate, drought is the main cause of mortality post-transplanting in reforestation programs. An active response to drought is critical for tree establishment and survival. Applying a gel-based proteomic approach, dynamic changes in root proteins of(More)
Selection and breeding of genotypes with improved drought/heat tolerance become key issues in the course of global change with predicted increased frequency of droughts or heat waves. Several morphological and physiological plant traits must be considered. Rooting depth, root branching, nutrient acquisition, mycorrhization, nodulation in legumes and the(More)
Red (Trifolium pratense L., cv. “Start”) and white clover varieties (Trifolium repens L., cv. “Debut” and cv. “Haifa”) were waterlogged for 14 days and subsequently recovered for the period of 21 days. Physiological and biochemical responses of the clover varieties were distinctive, which suggested different sensitivity toward flooding. The comparative(More)
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