| 摘要 |
A method to reduce the content of unsaturated fatty acids in latex or a resin component, wherein the amount of unsaturated fatty acids in a plant body of Parthenium argentatum or Taraxacum kok-saghyz is reduced by lowering the expression level of fatty-acid desaturase in Parthenium argentatum or Taraxacum kok-saghyz by an antisense method or an RNAi method; a transgenic plant of Parthenium argentatum or Taraxacum kok-saghyz introduced with an expression vector in which a gene sequence encoding an antisense RNA or an siRNA having a nucleotide sequence complementary to an mRNA of a fatty-acid desaturase gene has been integrated into a site downstream of a promoter; and a method to reduce the content of unsaturated fatty acids in latex or a resin component, wherein the latex or the resin component is recovered from the above-mentioned transgenic plant.
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