Multicellular living organisms and unmodified parts thereof and – Plant – seedling – plant seed – or plant part – per se – Higher plant – seedling – plant seed – or plant part
Reexamination Certificate
1999-04-30
2003-05-27
Fox, David T. (Department: 1638)
Multicellular living organisms and unmodified parts thereof and
Plant, seedling, plant seed, or plant part, per se
Higher plant, seedling, plant seed, or plant part
C800S278000, C800S288000, C800S294000
Reexamination Certificate
active
06570070
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method for giving resistance to weed control compounds to plants.
2. Disclosure of the Related Art
Weed control is very important work for improving yields and quality of cultivated plants. For this purpose, weed control compounds such as herbicides are mainly used. However, for using weed control compounds, it is not always easy to distinguish cultivated plants from weeds of allied species to selectively control only weeds. Then, production of plants having resistance to weed control compounds (hereinafter referred to as weed control compound-resistance) has been attempted and some resistant plants have been put to practical use.
Recently, gene engineering techniques have been utilized for producing plants having weed control compound-resistance. As such a technique, for example, Hinchee, M. A. W. et al. disclose a method for producing a plant having resistance to a herbicide, glyphosate, wherein 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene which is a target enzyme of glyphosate is mutagenized so that an affinity for glyphosate is reduced, and the gene is introduced into a plant [Hinchee, M. A. W. et al., BIO/TECHNOLOGY, 6: p 915 (1988)].
OBJECTS OF THE INVENTION
Varieties of known methods for giving weed control compound-resistance to plants are not necessarily sufficient and it has been desired to develop further various kinds of methods for giving weed control compound-resistance to plants.
The main object of the present invention is to provide a new kind of a method for giving weed control compound-resistance to plants.
This object as well as other objects and advantages of the present invention will become apparent to those skilled in the art from the following description with reference to the accompanying drawings.
REFERENCES:
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Yuan et al. Modification of plant components. Current Opinions in Biotechnology 1997, 8:227-233. see p. 231.*
Papenbrock et al. Decreased and increased expression of the subunit CHL 1 diminishes Mg chelatase activity and reduces chlorophyll synthesis in transgenic tobacco plants. The Plant Journal 2000, 22(2): 155-164.*
Kruse, E. et al; Coproporphyrinogen III oxidase from barley and tobacco—sequence analysis and initial expression studies, PLANTA (Heidelberg) 1995, vol. 196, No. 4, 1995, pp. 796-803.
Kruse, E. et al; Isolation and characterization of tobacco (Nicotiana tabacum) cDNA clones encoding proteins involved in magnesium chelation into protoporphyrin IX, Plant Molecular Biology Dec., 1997, vol. 35, No. 6, pp. 1053-1056.
Madsen, O. et al; A soybean coproporphyrinogen oxidase gene is highly expressed in root nodules, Plant Molecular Biology 1993, vol. 23, No. 1, 1993, pp. 35-43.
G. della-Cioppa et al., Targeting a Herbicide-Resistant Enzyme fromEscherichia Colito Chloroplasts of Higher Plants,Bio/Technology, vol. 5, pp. 579-584 (Jun. 1987).
M. A. W. Hinchee et al., Production of Transgenic Soybean Plants Using Agrobacterium-Mediated DNA Transfer,Bio/Technology, vol. 6, pp. 915-922 (Aug. 1998).
M. De Block et al., Engineering herbicide resistance in plants by expression of a detoxifying enzyme,The EMBO Journal, vol. 6, No. 9, pp. 2513-2518 (1987).
L. C. D. Gibson et al., Magnesium-protoporphyrin chelatase ofRhodobacter sphaeroides: Reconstitution of activity by combining the products of the bchH, -I, and -D genes expressed inEscherichia coli,Proc. Natl. Acad. Sci. USA, vol. 92, pp. 1941-1944 (Mar. 1995).
Nagasawa Akitsu
Nakajima Hiroki
Fox David T.
Kruse David H
Sumitomo Chemical Company Limited
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