High amylose starch from transgenic potato plants

摘要

PCT No. PCT/GB95/00634 Sec. 371 Date Sep. 24, 1996 Sec. 102(e) Date Sep. 24, 1996 PCT Filed Mar. 22, 1995 PCT Pub. No. WO95/26407 PCT Pub. Date Oct. 5, 1995Disclosed is a method of producing altered starch from transformed potato plants or their progeny, comprising extracting starch from a potato plant, at least the tubers of which comprise at least an effective portion of a starch branching enzyme (SBE) cDNA sequence operably linked in the antisense orientation to a suitable promoter, such that the level of SBE activity is limited to less than 0.8 units per gram tuber. Also disclosed are potato plants comprising altered starch in accordance with the invention.