Cell cycle progression in the pericycle is not sufficient for SOLITARY ROOT/IAA14-mediated lateral root initiation in Arabidopsis thaliana. Vanneste, S., De Rybel, B., Beemster, G. T. S., Ljung, K., De Smet, I., Van Isterdael, G., Naudts, M., Iida, R., Gruissem, W., Tasaka, M., Inze, D., Fukaki, H., & Beeckman, T. Plant Cell, 17(11):3035–3050, November, 2005. Place: Rockville Publisher: Amer Soc Plant Biologists WOS:000232991700017doi abstract bibtex To study the mechanisms behind auxin-induced cell division, lateral root initiation was used as a model system. By means of microarray analysis, genome-wide transcriptional changes were monitored during the early steps of lateral root initiation. Inclusion of the dominant auxin signaling mutant solitary root1 (slr1) identified genes involved in lateral root initiation that act downstream of the auxin/indole-3-acetic acid (AUX/IAA) signaling pathway. Interestingly, key components of the cell cycle machinery were strongly defective in slr1, suggesting a direct link between AUX/IAA signaling and core cell cycle regulation. However, induction of the cell cycle in the mutant background by overexpression of the D-type cyclin (CYCD3;1) was able to trigger complete rounds of cell division in the pericycle that did not result in lateral root formation. Therefore, lateral root initiation can only take place when cell cycle activation is accompanied by cell fate respecification of pericycle cells. The microarray data also yielded evidence for the existence of both negative and positive feedback mechanisms that regulate auxin homeostasis and signal transduction in the pericycle, thereby fine-tuning the process of lateral root initiation.
@article{vanneste_cell_2005,
title = {Cell cycle progression in the pericycle is not sufficient for {SOLITARY} {ROOT}/{IAA14}-mediated lateral root initiation in {Arabidopsis} thaliana},
volume = {17},
issn = {1040-4651},
doi = {10/dwzcgw},
abstract = {To study the mechanisms behind auxin-induced cell division, lateral root initiation was used as a model system. By means of microarray analysis, genome-wide transcriptional changes were monitored during the early steps of lateral root initiation. Inclusion of the dominant auxin signaling mutant solitary root1 (slr1) identified genes involved in lateral root initiation that act downstream of the auxin/indole-3-acetic acid (AUX/IAA) signaling pathway. Interestingly, key components of the cell cycle machinery were strongly defective in slr1, suggesting a direct link between AUX/IAA signaling and core cell cycle regulation. However, induction of the cell cycle in the mutant background by overexpression of the D-type cyclin (CYCD3;1) was able to trigger complete rounds of cell division in the pericycle that did not result in lateral root formation. Therefore, lateral root initiation can only take place when cell cycle activation is accompanied by cell fate respecification of pericycle cells. The microarray data also yielded evidence for the existence of both negative and positive feedback mechanisms that regulate auxin homeostasis and signal transduction in the pericycle, thereby fine-tuning the process of lateral root initiation.},
language = {English},
number = {11},
journal = {Plant Cell},
author = {Vanneste, S. and De Rybel, B. and Beemster, G. T. S. and Ljung, K. and De Smet, I. and Van Isterdael, G. and Naudts, M. and Iida, R. and Gruissem, W. and Tasaka, M. and Inze, D. and Fukaki, H. and Beeckman, T.},
month = nov,
year = {2005},
note = {Place: Rockville
Publisher: Amer Soc Plant Biologists
WOS:000232991700017},
keywords = {amino-acids, aux/iaa proteins, box protein tir1, dependent kinase, domain-ii, family, gene-expression, microarray, plant development, polar auxin transport},
pages = {3035--3050},
}
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Inclusion of the dominant auxin signaling mutant solitary root1 (slr1) identified genes involved in lateral root initiation that act downstream of the auxin/indole-3-acetic acid (AUX/IAA) signaling pathway. Interestingly, key components of the cell cycle machinery were strongly defective in slr1, suggesting a direct link between AUX/IAA signaling and core cell cycle regulation. However, induction of the cell cycle in the mutant background by overexpression of the D-type cyclin (CYCD3;1) was able to trigger complete rounds of cell division in the pericycle that did not result in lateral root formation. Therefore, lateral root initiation can only take place when cell cycle activation is accompanied by cell fate respecification of pericycle cells. 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By means of microarray analysis, genome-wide transcriptional changes were monitored during the early steps of lateral root initiation. Inclusion of the dominant auxin signaling mutant solitary root1 (slr1) identified genes involved in lateral root initiation that act downstream of the auxin/indole-3-acetic acid (AUX/IAA) signaling pathway. Interestingly, key components of the cell cycle machinery were strongly defective in slr1, suggesting a direct link between AUX/IAA signaling and core cell cycle regulation. However, induction of the cell cycle in the mutant background by overexpression of the D-type cyclin (CYCD3;1) was able to trigger complete rounds of cell division in the pericycle that did not result in lateral root formation. Therefore, lateral root initiation can only take place when cell cycle activation is accompanied by cell fate respecification of pericycle cells. The microarray data also yielded evidence for the existence of both negative and positive feedback mechanisms that regulate auxin homeostasis and signal transduction in the pericycle, thereby fine-tuning the process of lateral root initiation.},\n\tlanguage = {English},\n\tnumber = {11},\n\tjournal = {Plant Cell},\n\tauthor = {Vanneste, S. and De Rybel, B. and Beemster, G. T. S. and Ljung, K. and De Smet, I. and Van Isterdael, G. and Naudts, M. and Iida, R. and Gruissem, W. and Tasaka, M. and Inze, D. and Fukaki, H. and Beeckman, T.},\n\tmonth = nov,\n\tyear = {2005},\n\tnote = {Place: Rockville\nPublisher: Amer Soc Plant Biologists\nWOS:000232991700017},\n\tkeywords = {amino-acids, aux/iaa proteins, box protein tir1, dependent kinase, domain-ii, family, gene-expression, microarray, plant development, polar auxin transport},\n\tpages = {3035--3050},\n}\n\n","author_short":["Vanneste, S.","De Rybel, B.","Beemster, G. T. 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