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Trans-acting siRNA-mediated repression of ETTIN and ARF4 regulates heteroblasty in Arabidopsis
Open accessAbstract
Mutations in the ARGONAUTE gene ZIPPY(ZIP)/AGO7 in Arabidopsis accelerate the juvenile-to-adult transition. A screen for mutations that suppress this precocious phenotype yielded alleles of two auxin-related transcription factors known to be upregulated in zip: ETTIN (ETT)/ARF3 and ARF4. Mutations in ETT/ARF3and ARF4 delay the expression of adult traits, demonstrating that these genes have non-redundant roles in shoot maturation. ZIP is not generally required for the production of trans-acting (ta) siRNAs, but is required for the production and/or stability of tasiR-ARF, a ta-siRNA that targets both ETT/ARF3 and ARF4. tasiR-ARF is absent in zip-2, and overexpression of a tasiR-ARF-insensitive form of ETT mimics the zip phenotype. We conclude that the precocious phenotype of zip is attributable to the absence of tasiR-ARF-mediated repression of ETT and ARF4. The abundance of tasiR-ARF, ETT/ARF3 and ARF4 RNA does not change during vegetative development. This result suggests that tasiR-ARF regulation establishes the threshold at which leaves respond to a temporal signal, rather than being a component of this signal.
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Cited by
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Mockaitis, K., & Estelle, M. (2008) · Annual Review of Cell and Developmental Biology · doi:10.1146/annurev.cellbio.23.090506.123214 · Cited by 651
A Review of Auxin Response Factors (ARFs) in Plants
Li, S.-B., Xie, Z.-Z., Hu, C.-G., & Zhang, J.-Z. (2016) · Frontiers in Plant Science · doi:10.3389/fpls.2016.00047 · Cited by 470
Common Functions for Diverse Small RNAs of Land Plants
Axtell, M. J., Snyder, J. A., & Bartel, D. P. (2007) · The Plant Cell · doi:10.1105/tpc.107.051706 · Cited by 420
Pattern formation via small RNA mobility
Chitwood, D. H., Nogueira, F. T. S., Howell, M. D., Montgomery, T. A., Carrington, J. C., & Timmermans, M. C. P. (2009) · Genes & Development · doi:10.1101/gad.1770009 · Cited by 398
Howell, M. D., Fahlgren, N., Chapman, E. J., Cumbie, J. S., Sullivan, C. M., Givan, S. A., Kasschau, K. D., & Carrington, J. C. (2007) · The Plant Cell · doi:10.1105/tpc.107.050062 · Cited by 396
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Fang, X., & Qi, Y. (2016) · The Plant Cell · doi:10.1105/tpc.15.00920 · Cited by 357
Alvarez-Buylla, E. R., Benítez, M., Corvera-Poiré, A., Chaos Cador, Á., de Folter, S., Gamboa de Buen, A., Garay-Arroyo, A., García-Ponce, B., Jaimes-Miranda, F., Pérez-Ruiz, R. V., et al. (2010) · The Arabidopsis Book · doi:10.1199/tab.0127 · Cited by 298
Ikezaki, M., Kojima, M., Sakakibara, H., Kojima, S., Ueno, Y., Machida, C., & Machida, Y. (2010) · The Plant Journal · doi:10.1111/j.1365-313x.2009.04033.x · Cited by 97
The ATP-Binding Cassette Transporter ABCB19 Regulates Postembryonic Organ Separation in Arabidopsis
Zhao, H., Liu, L., Mo, H., Qian, L., Cao, Y., Cui, S., Li, X., & Ma, L. (2013) · PLoS ONE · doi:10.1371/journal.pone.0060809 · Cited by 26
Metadata
- Authors
- Hunter, C., Willmann, M. R., Wu, G., Yoshikawa, M., de la Luz Gutiérrez-Nava, M., & Poethig, S. R.
- Venue
- Development
- Publisher
- The Company of Biologists
- Published
- 2006-08-01
- Volume
- 133
- Issue
- 15
- Pages
- 2973-2981
- ISSN
- 0950-1991 (ISSN-L)
- 1477-9129
- OpenAlex
- W1978125499
- Cited by
- 367
- References
- 0
- FWCI
- 29.82
- Type
- journal article
- Language
- en
- Open access
- green
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