Sci. Signal., 17 March 2009
Plant Biology Paternal Influences on Zygote Development
Pamela J. Hines
Science, AAAS, Washington, DC 20005, USA
The signals that get embryonic development going in plants reveal a finely timed interaction between paternal and maternal gametes. Bayer et al. (see the Perspective by Grossniklaus) have discovered the messenger RNA (mRNA) encoding a kinase SSP in the paternal pollen grains. After fertilization and fusion of male and female gametes, the mRNA is translated into the SSP protein. SSP then triggers activity of YODA, a kinase supplied from the maternal gamete. YODA in turn regulates early phases of zygotic development. In this way, embryonic development begins only after fusion of male and female gametes.
Citation: P. J. Hines, Paternal Influences on Zygote Development. Sci. Signal. 2, ec100 (2009).
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