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The axr6 mutants of Arabidopsis thaliana define a gene involved in auxin response and early development
Abstract
The indolic compound auxin regulates virtually every aspect of plant growth and development, but its role in embryogenesis and its molecular mechanism of action are not understood. We describe two mutants of Arabidopsis that define a novel gene called AUXIN-RESISTANT6 (AXR6) which maps to chromosome 4. Embryonic development of the homozygous axr6 mutants is disrupted by aberrant patterns of cell division, leading to defects in the cells of the suspensor, root and hypocotyl precursors, and provasculature. The homozygous axr6 mutants arrest growth soon after germination lacking a root and hypocotyl and with severe vascular pattern defects in their cotyledons. Whereas previously described mutants with similar developmental defects are completely recessive, axr6 heterozygotes display a variety of morphological and physiological alterations that are most consistent with a defect in auxin physiology or response. The AXR6 gene is likely to be important for auxin response throughout the plant, including early development.
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Cited by
Arabidopsis lateral root development: an emerging story
Péret, B., De Rybel, B., Casimiro, I., Benková, E., Swarup, R., Laplaze, L., Beeckman, T., & Bennett, M. J. (2009) · Trends in Plant Science · doi:10.1016/j.tplants.2009.05.002 · Cited by 818
FT Protein Acts as a Long-Range Signal in Arabidopsis
Jaeger, K. E., & Wigge, P. A. (2007) · Current Biology · doi:10.1016/j.cub.2007.05.008 · Cited by 731
Dissecting Arabidopsis lateral root development
Casimiro, I., Beeckman, T., Graham, N., Bhalerao, R., Zhang, H., Casero, P., Sandberg, G., & Bennett, M. J. (2003) · Trends in Plant Science · doi:10.1016/s1360-1385(03)00051-7 · Cited by 683
Auxin Receptors and Plant Development: A New Signaling Paradigm
Mockaitis, K., & Estelle, M. (2008) · Annual Review of Cell and Developmental Biology · doi:10.1146/annurev.cellbio.23.090506.123214 · Cited by 651
Self-citationThe Tomato Aux/IAA Transcription Factor IAA9 Is Involved in Fruit Development and Leaf Morphogenesis
Wang, H., Jones, B., Li, Z., Frasse, P., Delalande, C., Regad, F., Chaabouni, S., Latché, A., Pech, J.-C., & Bouzayen, M. (2005) · The Plant Cell · doi:10.1105/tpc.105.033415 · Cited by 601
Metadata
- Authors
- Hobbie, L., McGovern, M., Hurwitz, L. R., Pierro, A., Liu, N. Y., Bandyopadhyay, A., & Estelle, M.
- Venue
- Development
- Publisher
- The Company of Biologists
- Published
- 2000-01-01
- Volume
- 127
- Issue
- 1
- Pages
- 23-32
- ISSN
- 0950-1991 (ISSN-L)
- 1477-9129
- OpenAlex
- W2170030199
- Cited by
- 240
- References
- 0
- FWCI
- 35.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hobbie, L., McGovern, M., Hurwitz, L. R., Pierro, A., Liu, N. Y., Bandyopadhyay, A., & Estelle, M. (2000). The axr6 mutants of Arabidopsis thaliana define a gene involved in auxin response and early development. Development. https://doi.org/10.1242/dev.127.1.23
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