| 摘要 |
The present invention provides LEC1 variants. The LEC1 variants comprise a LEC1 A domain, a LEC1 B domain and a LEC1 C domain, where the LEC1 B domain has at least one mutation and/or is chimeric with respect to the LEC1 A or C domain. The invention also includes methods of preparing such LEC1 variants, and methods of using such LEC1 variants to modulate the level or activity of LEC1 variants in a plant cell. Modulation of LEC1 activity or levels can be used for different purposes such as increasing transformation efficiency, stimulating growth of somatic embryos, improving the growth and recovery of transformants, inducing apomixes, increasing transformation frequency, enhancing tissue culture response and the like.
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