How to increase the stearate content of vegetable seed oils and plant stearoyl -ACP thioesterase array

摘要

(57) plant thioesterase, [summary] The present invention relates to plant acyl -ACP thioesterase having significant activity against stearoyl -ACP especially. I describe DNA constructs useful for the expression in plant seed cells in the plant stearoyl -ACP thioesterase. Such constructs, control of regulatory elements capable of directing the expression of plant stearoyl -ACP thioesterase preferentially in seed tissues as compared to other plant tissues when expressed in transgenic plants of this I containing a DNA sequence encoding a plant stearoyl -ACP thioesterase for the purpose under. The present invention also relates to a method for modifying the stearic acid produced in plant seed cells using a DNA sequence encoding a plant thioesterase stearoyl -ACP. Plant thioesterase with significant activity against stearoyl -ACP exemplified herein is derived from the mangosteen. Stearic acid concentration as modified, may be obtained by combination with an antisense construct reduces the stearoyl -ACP desaturase or natural, alone mangosteen thioesterase, and expressed in plant seeds.