Some aspects of underground organs of spotleaf orchis growth and phenolic compounds accumulation at the generative stage of ontogenesis

For the first time, changes of the growth and accumulation of phenolic compounds (PHCs) in different parts of underground organs of the tuberoid orchid Dactylorhiza maculata during vegetation and the winter dormancy period were studied. It was shown that the replacement of old tuberoids and adventit...

Full description

Saved in:
Bibliographic Details
Published in:Biology bulletin of the Russian Academy of Sciences 2013-05, Vol.40 (3), p.281-288
Main Authors: Marakaev, O. A, Celebrowsky, M. V, Nikolaeva, T. N, Zagoskina, N. V
Format: Article
Language:English
Subjects:
adventitious roots
Biochemistry
Biomedical and Life Sciences
Cell Biology
Dactylorhiza maculata
dormancy
Ecology
Life Sciences
metabolism
ontogeny
Orchidaceae
Orchis
phenolic compounds
Plant Physiology
spring
underground parts
vegetation
Zoology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:For the first time, changes of the growth and accumulation of phenolic compounds (PHCs) in different parts of underground organs of the tuberoid orchid Dactylorhiza maculata during vegetation and the winter dormancy period were studied. It was shown that the replacement of old tuberoids and adventitious roots by new ones is accompanied by active growth, assimilates reallocation, and PHCs accumulation. It was found that the tuberoid performing the function of a storage organ possessed a low PHCs content, which increased at the end of vegetation and was stably high during the winter dormancy period; in spring the content decreased, mosr likely as a result of PHCs catabolism and utilization for growth processes. It was proposed that the higher PHCs content in adventitious roots and tuberoid terminal parts is determined by mycotrophy of the organs.
ISSN:1062-3590
1608-3059
DOI:10.1134/S1062359013030060