MORPHOGENESIS AND HORMONAL BALANCE ARABIDOPSIS THALIANA BY EXPOSURE TO UV-A LIGHT LOW INTENSITY

Minich Aleksandr Sergeyevich, Minich Irina Borisovna, Shaytarova Olga Vladimirovna, Permyakova Natalya Leonidovna

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The article deals with the effect of long-wave ultraviolet (UVA) radiation in the low-intensity white light (BS) on morphogenesis, hormonal balance, the content of photosynthetic pigments (SAF) and ascorbic acid (AA) Arabidopsis thaliana (L.) Heynh. wild-type and mutant Ler hy4, having irregularities in the synthesis of cryptochrome 1 (CRY1). The plants of both lines inhibition of growth processes and reducing the real seed production in response to the additional exposure to UV-A light was associated with a change in the balance of endogenous hormones - decrease in the amount of indole acid (IAA), and increased levels of abscisic acid (ABA), change the content of FAK and AK. On the basis of differences in the dynamics of seed production plants has been suggested the possible involvement of the photoreceptor CRY1 in regulating morphogenesis of plants to UV-A light of low intensity.

Keywords: Arabidopsis thaliana Ler, hy4, UV-A radiation, endogenous hormones, photosynthetic pigments, ascorbic acid, morphogenesis, seed production

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Issue: 8, 2013

Series of issue: Issue 8

Rubric: BIOLOGY

Pages: 9 — 17

Downloads: 931