Lipoxygenase from the leaves of wheat grown under different water supply conditions |
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Authors: | M D Permyakova A V Permyakov S V Osipova T A Pshenichnikova |
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Institution: | 1. Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russia 2. Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
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Abstract: | Lipoxygenase (LOG) in protein fractions isolated from the leaves of substituted wheat lines was investigated. Three molecular forms of the
enzyme were detected. A water deficiency caused the induction of a membrane-bound form (mLOG) and resulted in a decrease in the activity of “soluble” enzymes (s1LOG) and (s2LOG) in most genotypes. A correlation analysis demonstrated the dependence between the level of enzymatic activity and indices
of resistance to drought. A genetic control of the s1LOG and s2LOG activity at an optimal water supply level was associated
with chromosomes 1A, 1D, 3A, 5A, 5B, and 5D, while under the conditions of the modeled soil drought, it was associated with
chromosomes 1B and 1D. |
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