Pigment apparatus in Ajuga reptans plants as affected by adaptation to light growth conditions

Pigment apparatus in Ajuga reptans plants as affected by adaptation to light growth conditions Mechanisms of adaptation of the photosynthetic apparatus at the level of pigment complex in a shade-tolerant bugle plant (Ajuga reptans L.) grown at full solar irradiation in an open plot were studied. In “sun” plants, the content of photosynthetic pigments decreased markedly as compared to “shade” plants grown under a forest canopy at 5–10% of the full solar irradiation. In leaves of sun plants, the portion of β-carotene and lutein in the carotenoid spectrum was higher than in shade plant leaves, antheraxanthin and zeaxanthin were present, and de-epoxidation of violaxanthin was by an order of magnitude higher in sun plant leaves reaching 40%. The data obtained indicate the role of the violaxanthin cycle in the protection of photosynthetic apparatus in a shade-tolerant plant against destruction under excessive irradiation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Pigment apparatus in Ajuga reptans plants as affected by adaptation to light growth conditions

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Copyright © 2007 by Pleiades Publishing, Ltd.
Life Sciences; Plant Sciences; Plant Physiology
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