Effect of NtDCN1 gene activated during embyogenesis on organogenesis in tobacco tissue culture

Effect of NtDCN1 gene activated during embyogenesis on organogenesis in tobacco tissue culture The role of NtDCN1 gene in organogenesis in the culture of tobacco (Nicotiana tabacum L.) somatic tissues was studied. This gene is specifically expressed in tobacco microspores induced for somatic embryogenesis. This gene knockout resulted in a disturbance of formation and development of embyoids from microspores. In leaf disks and calli derived from tobacco lines with active and inactivated NtDCN1 gene, we studied induction of shoots and roots. A comparative analysis of tobacco line morphogenetic responses in vitro showed that NtDCN1 gene inactivation enhanced shoot formation and suppressed rhizogenesis, whereas this gene reactivation returned organogenesis processes to control level. Difference between lines was manifested only at a definite ratio between exogenous hormones supplied. The involvement of NtDCN1 gene in line responses to exogenous auxin is discussed. The results obtained permit a supposition that the NtDCN1 gene is critical for regulation not only somatic embryogenesis but also organogenesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Effect of NtDCN1 gene activated during embyogenesis on organogenesis in tobacco tissue culture

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443710010164
Publisher site
See Article on Publisher Site

Abstract

The role of NtDCN1 gene in organogenesis in the culture of tobacco (Nicotiana tabacum L.) somatic tissues was studied. This gene is specifically expressed in tobacco microspores induced for somatic embryogenesis. This gene knockout resulted in a disturbance of formation and development of embyoids from microspores. In leaf disks and calli derived from tobacco lines with active and inactivated NtDCN1 gene, we studied induction of shoots and roots. A comparative analysis of tobacco line morphogenetic responses in vitro showed that NtDCN1 gene inactivation enhanced shoot formation and suppressed rhizogenesis, whereas this gene reactivation returned organogenesis processes to control level. Difference between lines was manifested only at a definite ratio between exogenous hormones supplied. The involvement of NtDCN1 gene in line responses to exogenous auxin is discussed. The results obtained permit a supposition that the NtDCN1 gene is critical for regulation not only somatic embryogenesis but also organogenesis.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Jan 12, 2010

References

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