Plant and Cell Physiology Supplement
Supplement to Plant and Cell Physiology Vol. 46
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Arabidopsis Sec31 is essential
*Tomoko NarisawaHiroo FukudaKen Matsuoka
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Pages 518

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Abstract
The COPII vesicle, which is involved in the ER-to-Golgi transport, is generated by the assembly of Sar1p, Sec23/24p and Sec13/31p. Genes for these proteins are known to be essential in yeast. In plants, several genes for each COPII protein are present in the genome. To understand the role of this gene amplification, we chose Sec31 as a model because only two genes, At3g63460 (A) and At1g18830 (B) are found in the Arabidopsis genome. We made AaBb genotype plant and the progenies of this plant were analyzed. In the sheath of selfed AaBb plants, no dead or undeveloped seeds were observed. No aabb and aaBb plants were found in 110 progenines analyzed. In addition, no decrease in germination rate was observed. Therefore, the function of Sec31 in Arabidopsis essential from the early development, possibly formation of pollen or egg cells or germination of pollen
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© 2005 by The Japanese Society of Plant Physiologists
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