Abstract
Cotton fiber is an ideal model for studying plant cell elongation and cell wall biogenesis, but the genes that are critical for the regulation of fiber development are largely unknown. We report here the cloning and characterization of a receptor-like kinase gene (designated GhRLK1), expression of which is induced during the period of active secondary wall synthesis in the cotton fiber cells. We demonstrate that GhRLK1 is located in the plasma membrane and shows dual specificity as both a serine/threonine kinase and a tyrosine kinase. Our results suggest a possible role of GhRLK1 in the signal transduction pathway that is involved in the induction and maintenance of active secondary wall formation during fiber development.
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Acknowledgments
This work was supported by the “863” High Technology Development Program (Grant No. 2004AA222090) and the National Special Program for Research and Industrialization of Transgenic Plants (Grant No. JY03-A-04-02). We thank Mr. Guang-Jun Dong for help with confocal microscopic analysis, and Prof. Lucien Caro for reading and polishing the manuscript.
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Communicated by G. Jürgens
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Li, YL., Sun, J. & Xia, GX. Cloning and characterization of a gene for an LRR receptor-like protein kinase associated with cotton fiber development. Mol Genet Genomics 273, 217–224 (2005). https://doi.org/10.1007/s00438-005-1115-z
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DOI: https://doi.org/10.1007/s00438-005-1115-z