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Regulation of Expansin Gene Expression Affects Growth and Development in Transgenic Rice Plants
Open accessAbstract
To investigate the in vivo functions of expansins, we generated transgenic rice plants that express sense and antisense constructs of the expansin gene OsEXP4. In adult plants with constitutive OsEXP4 expression, 12% of overexpressors were taller and 88% were shorter than the average control plants, and most overexpressors developed at least two additional leaves. Antisense plants were shorter and flowered earlier than the average control plants. In transgenic plants with inducible OsEXP4 expression, we observed a close correlation between OsEXP4 protein levels and seedling growth. Coleoptile and mesocotyl length increased by up to 31 and 97%, respectively, in overexpressors, whereas in antisense seedlings, they decreased by up to 28 and 43%, respectively. The change in seedling growth resulted from corresponding changes in cell size, which in turn appeared to be a function of altered cell wall extensibility. Our results support the hypothesis that expansins are involved in enhancing growth by mediating cell wall loosening.
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Cited by
Cosgrove, D. J. (2005) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm1746 · Cited by 3,308
Harb, A., Krishnan, A., Ambavaram, M. M. R., & Pereira, A. (2010) · Plant Physiology · doi:10.1104/pp.110.161752 · Cited by 747
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Shoseyov, O., Shani, Z., & Levy, I. (2006) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.00028-05 · Cited by 561
Expansins: roles in plant growth and potential applications in crop improvement
Marowa, P., Ding, A., & Kong, Y. (2016) · Plant Cell Reports · doi:10.1007/s00299-016-1948-4 · Cited by 448
Ethylene-Mediated Acclimations to Flooding Stress
Sasidharan, R., & Voesenek, L. A. C. J. (2015) · Plant Physiology · doi:10.1104/pp.15.00387 · Cited by 300
Metadata
- Authors
- Choi, D., Lee, Y., Cho, H.-T., & Kende, H.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 2003-05-08
- Volume
- 15
- Issue
- 6
- Pages
- 1386-1398
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2096192175
- Cited by
- 318
- References
- 0
- FWCI
- 11.85
- Type
- journal article
- Language
- en
- Open access
- green
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- Choi, D., Lee, Y., Cho, H.-T., & Kende, H. (2003). Regulation of Expansin Gene Expression Affects Growth and Development in Transgenic Rice Plants. The Plant Cell. https://doi.org/10.1105/tpc.011965
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