Russian Journal of Plant Physiology

, Volume 52, Issue 6, pp 724–730 | Cite as

The Role of Cryptochrome 1 and Phytochromes in the Control of Plant Photomorphogenetic Responses to Green Light

  • I. F. Golovatskaya


We studied the role of cryptochrome 1 (CRY1) and phytochromes in the photomorphogenetic responses of plants to the middle-wavelength region of photosynthetically active radiation. A comparison was performed of green light (GL) action on growth, GA activity and IAA and ABA contents during seedling deetiolation of two Arabidopsis thaliana (L.) Heynh lines of Landsnerg erecta ecotype (wild type Ler and mutant hy4) and of Phaseolus vulgaris L. It was shown that a growth responses of Ler hypocotyls to GL of 515 nm and Ler cotyledons to GL of 542 nm were weaker than those of the hy4 mutant defected in the CRY1 synthesis. Far-red light (730 nm) neutralized the effect of GL (533 nm) on the phytohormone balance in the primary kidney bean leaves. The data obtained permit a supposition that plants possess several photoregulatory systems functioning under GL of higher (515 nm) and lower emission energy (542–553 nm). A possible operation of GL receptors, other than cryptochrome 1 and phytochromes, is discussed.

Key words

Arabidopsis thaliana Phaseolus vulgaris green light cryptochrome 1 phytochromes gibberellins ABA IAA 



cryptochrome 1






far-red light


blue light


green light


photosynthetically active radiation


active phytochrome form


inactive phytochrome form


red light


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Copyright information

© MAIK "Nauka/Interperiodica" 2005

Authors and Affiliations

  • I. F. Golovatskaya
    • 1
  1. 1.Department of Plant Physiology and Biotechnology, Faculty of Biology and SoilTomsk State UniversityTomskRussia

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