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United States Patent | 5,792,925 |
de Framond | August 11, 1998 |
DNA sequences are able to function as promoters of tissue-preferential transcription of associated DNA sequences in plants, particularly in the roots. These DNA sequences can be used in transformation vectors to produce transgenic plants which will express the heterologous genes preferentially in tissue, particularly in the roots of maize plants.
Inventors: | de Framond; Annick J. (Durham, NC) |
Assignee: | Novartis Finance Corporation (New York, NY) |
Appl. No.: | 450653 |
Filed: | May 25, 1995 |
Intern'l Class: | A01H 005/00; C12N 015/05; C12N 015/32 |
Field of Search: | 800/205,200,250,DIG. 56 435/172.3,172.1 47/58 536/23.1,23.6,24.1,23.71 935/6,22,23,67,30 |
4940661 | Jul., 1990 | Etcheverry et al. | 435/69. |
5023179 | Jun., 1991 | Lam et al. | 435/172. |
5550318 | Aug., 1996 | Adams et al. | 800/205. |
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TABLE 1 ______________________________________ Number of Plants that test GUS positive (18 Plants Total) 12/89- Date Assayed 1/90 2/90 3/90 ______________________________________ Root 7 1 0 Stem 4 4 2 Leaf 2 0 0 ______________________________________