Role of ethylene in activation of cell division in quiescent center of excised maize roots

In the present work, two maize cultivars in which root meristem responded differently to root tip excision were used: in Interkras-375 MW, meristem opening was observed due to the activation of cell divisions in the quiescent center (QC); in Krasnodar-194 MW, the meristem remained closed. Excised ro...

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Bibliographic Details
Published in:Russian journal of developmental biology 2015-03, Vol.46 (2), p.60-64
Main Authors: Bystrova, E. I., Zhukovskaya, N. V., Rakitin, V. J., Ivanov, V. B.
Format: Article
Language:English
Subjects:
Animal Anatomy
Biomedical and Life Sciences
Developmental Biology
Developmental Biology of Plants
Histology
Life Sciences
Morphology
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Summary:In the present work, two maize cultivars in which root meristem responded differently to root tip excision were used: in Interkras-375 MW, meristem opening was observed due to the activation of cell divisions in the quiescent center (QC); in Krasnodar-194 MW, the meristem remained closed. Excised root tips of Interkras MB-375 were shown to produce much more ethylene than excised root tips of Krasnodar-194 MW. The inhibitor of ethylene biosynthesis L-α-(2-amino-ethoxyvinyl)glycine-HCl (AVG) and inhibitors of ethylene action AgNO 3 and 1-methyl-cyclopropene (MCP) prevented meristem opening in excised root tips of Intekras-375 MW. The obtained results allow us to conclude that ethylene plays an important role in the activation of cell divisions in the QC of excised root tips.
ISSN:1062-3604
1608-3326
DOI:10.1134/S1062360415020034