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Russian Journal of Plant Physiology : Volume 52, Issue 1, January 2005

Russian Journal of Plant Physiology : Volume 51

Russian Journal of Plant Physiology : Volume 50

Russian Journal of Plant Physiology : Volume 49

Russian Journal of Plant Physiology : Volume 48

Russian Journal of Plant Physiology : Volume 47

Growth, photosynthesis, and metabolism of sugar beet at an early stage of exposure to elevated CO$_{2}$

Content Provider	Springer Nature Link
Author	Ignatova, L. K. vichkova, N. S. Mudrik, V. A. Lyubimov, V. Yu. Ivav, B. N. Romava, A. K.
Copyright Year	2005
Abstract	The effects of CO$_{2}$ concentration (C $_{a}$) on growth, photosynthesis, and the activity of enzymes associated with the translocation and assimilation of CO$_{2}$ were studied in sugar beet (Beta vulgaris L. subsp. saccharifera, cv. Ramonskaya) plants. The plants were grown in controlled-climate chamber to the stage of 3–4 leaves and then used in experiments. Experimental plants were exposed in boxes to doubled C $_{a}$ (700 µl/l, 2C plants), whereas control plants were kept in a chamber with ambient atmosphere (350 µl/l, 1C plants). As compared with 1C plants, in 3 and 8 days, the leaf area of 2C plants increased by 14 and 26%, respectively. The rate of their photosynthesis (P $_{n}$) measured in 3, 6, and 8 days increased by 85, 47, and 52%, respectively, whereas in normal air, the values of P $_{n}$ in 2C plants were by 12, 19, and 15% lower than in 1C plants. After 8-day growth, the content of soluble carbohydrates in the leaves of 2C plants attained 7.2%, being by 80% greater than in 1C plants; the content of starch did not exceed 3%. The total content of chlorophylls a and b in the leaves of 2C plants was by 14% greater than in 1C plants, but their ratio was essentially the same. The level of protein in 2C plants was by 13.4% lower than in 1C plants. The activity and content of Rubisco in 1C and 2C plants were similar. As compared with 1C plants, in 2C plants the activity of soluble carbonic anhydrase (sCA) was lower by 34% in 3 days and by 18% in 8 days; the activity of carbonic anhydrase of membrane preparations (mCA), was lower by 24 and 77%, respectively. Catalase activity in 2C plants became by 8% lower than in 1C plants only after 8 days. A reduction in the photosynthetic ability of 2C plants in ambient atmosphere, a decrease in activity of sCA and, especially, of mCA observed together with invariable activity and content of Rubisco in the leaf extracts are interpreted as early symptoms of acclimation of young plants of sugar beet to elevated CO$_{2}$.
Starting Page	158
Ending Page	164
Page Count	7
File Format	PDF
ISSN	10214437
Journal	Russian Journal of Plant Physiology
Volume Number	52
Issue Number	2
e-ISSN	16083407
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2005-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Beta vulgaris subsp. saccharifera growth photosynthesis Rubisco soluble and membrane-bound carbonic anhydrases doubled concentration of CO$_{2}$ Plant Sciences Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Plant Science

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