期刊
PLANT CELL REPORTS
卷 23, 期 1-2, 页码 17-25出版社
SPRINGER
DOI: 10.1007/s00299-004-0801-3
关键词
adventitious root histogenesis; Arabidopsis thaliana; exogenous Ca(2+); in vitro organogenesis; thin cell layers
This paper describes, for the first time, de novo adventitious root formation from thin cell layers (TCLs) of Arabidopsis thaliana. The objective of the study was to determine the optimal hormonal and light conditions and the optimal exogenous Ca(2+) concentration for obtaining adventitious rooting (AR) from A. thaliana TCLs and to identify the tissue(s) involved in the process. The results show that maximum AR was obtained with a single-phase method in the presence of 10 muM indole-3-butyric acid and 0.1 muM kinetin under continuous darkness for 30 days and with 0.6 mM exogenous CaCl(2). The endodermis was the only tissue involved in root meristemoid formation. The role of Ca(2+) in AR and the importance of using Arabidopsis TCLs in studies on the genetic/biochemical control of AR are discussed.
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