Shoot Growth and Changes in the Mesophyll Cell Structure in the Biennial Needles of Abies sibirica Ledeb.

Shoot Growth and Changes in the Mesophyll Cell Structure in the Biennial Needles of Abies... Structural aspects of source–sink relations in current-year and second-year shoots of Siberian fir were investigated. The period of linear growth of current-year shoots was accompanied by a decrease in the size of starch granules in chloroplasts and the number of mitochondria, as well as by the disappearance of lipid inclusions in the mesophyll cells of second-year needles. Growth processes did not affect seasonal changes in the structure of chloroplast grana in these cells. After the termination of shoot growth, large polysaccharide globules appeared in the cytoplasm of mesophyll cells in second-year needles. It is possible that the formation of these inclusions prevents the inhibition of the photosynthesis by starch, which was accumulated in chloroplasts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Shoot Growth and Changes in the Mesophyll Cell Structure in the Biennial Needles of Abies sibirica Ledeb.

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1021928216235
Publisher site
See Article on Publisher Site

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