| 摘要 |
PCT No. PCT/US95/05545 Sec. 371 Date Nov. 8, 1996 Sec. 102(e) Date Nov. 8, 1996 PCT Filed May 12, 1995 PCT Pub. No. WO95/31554 PCT Pub. Date Nov. 23, 1995Four chimeric genes are disclosed. A first chimeric gene encoding a plant cystathionine gamma -synthase (CS), a second chimeric gene encoding feedback-insensitive aspartokinase, which is operably linked to a plant chloroplast transit sequence, a third chimeric gene encoding bifunctional feedback-insensitive aspartokinase-homoserine dehydrogenase (AK-HDH), which is operably linked to a plant chloroplast transit sequence, and a fourth chimeric gene encoding a methionine-rich protein, all operably linked to plant seed-specific regulatory sequences are discussed. Methods for their use to produce increased levels of methionine in the seeds of transformed plants are provided. |
