Methods and genetic compositions to limit outcrossing and undesired gene flow in crop plants

   
   

The present invention relates to methods to control the spread of recombinant DNA molecules between sexually compatible plants of differing genetic composition. The invention describes the production of transgenic plants that comprise recombinant traits of interest or concern linked to repressible lethal genes. The lethal genes are blocked by the action of repressor molecules produced by the expression of repressor genes located at a different genetic locus. The lethal phenotype is only expressed after the segregation of the repressible lethal gene construct and the repressor gene following meiosis. The present invention may be employed for both open-pollinated and hybrid seed production systems and may be used to maintain genetic purity by blocking unintended introgression of genes from plants devoid of the specific repressor gene. The invention includes methods that impart traits that are desirable for environmentally responsible heterologous protein production, to genetic material used to impart said traits and to new plants and products derived by said methods.

A invenção atual relaciona-se aos métodos para controlar a propagação de moléculas recombinant do DNA entre plantas sexually compatíveis da composição genetic diferindo. A invenção descreve a produção das plantas transgenic que compreendem traços recombinant do interesse ou do interesse ligado aos genes letais repressible. Os genes letais são obstruídos pela ação das moléculas do repressor produzidas pela expressão dos genes do repressor situados em um locus genetic diferente. O phenotype letal é expressado somente após o segregation da construção letal repressible do gene e do gene do repressor depois do meiosis. A invenção atual pode ser empregada para sistemas de produção abr-open-pollinated e hybrid da semente e pode ser usada manter o purity genetic obstruindo o introgression unintended dos genes das plantas devoid do gene específico do repressor. A invenção inclui os métodos que dão os traços que são desejáveis para a produção heterologous ambiental responsável da proteína, ao material genetic usado dar traços ditos e às plantas novas e aos produtos derivados por métodos ditos.

 
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