Rapeseed MS1, RF2 und MS1 x RF2

Function: Male sterility; the barnase gene encodes for a ribonuclease enzyme (RNAse). The RNAse interferes RNA production in specific cells of the pollen sac, thus disrupting their normal cell functioning and preventing the development of pollen.

Function: The bar gene codes for the enzyme Phosphinothricin-Acetyltransferase (PAT) and leads to increased tolerance to glufosinate-containing herbicides.

Function: Restoring fertility; transgenic RF2 plants contain the barstar gene to restore fertility in the hybrid line. The gene codes for a ribonuclease inhibitor (barstar), which specifically inhibits the barnase expressed by the MS1 line.

As a result, when pollen from the restorer line RF2 is crossed to the male sterile line MS1, the resultant progeny are able to develop normal anthers and pollen.

Function: The bar gene codes for the enzyme Phosphinothricin-Acetyltransferase (PAT) and leads to increased tolerance to glufosinate-containing herbicides.