Transgenic corn plants having seeds with modified cornstarch...

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

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C800S284000, C800S290000, C800S278000, C435S468000, C435S101000, C435S412000

Reexamination Certificate

active

07009092

ABSTRACT:
Cornstarch characteristics can be changed by expressing a non-corn plant starch branching enzyme in a corn plant. In a preferred embodiment, transgenic corn plants containing the barley starch branching enzyme IIa transgene was generated. Some transgenic corn plants produced seeds containing cornstarch with lowered gelatinization temperature and retrogradation rate while others produced seeds containing cornstarch with higher retrogradation rate when compared to non-transgenic corn plants.

REFERENCES:
patent: 5912413 (1999-06-01), Myers et al.
patent: WO 97/22703 (1997-06-01), None
Slattery et al (2000, Trends in Plant Science 5(7):291-298).
Sun et al (1998, Plant Physiol. 118:37-49).
Umemoto T, Yano M, Satoh H, Shomura A, and Nakamura Y., “Mapping of a gene responsible for the difference in amylopectin structure between japonica-type and indica-type rice varieties”, Theor Appl Genet 104(1):1-8 (Jan. 2002).
Rahman S. Regina A, Li Z, Mukai Y, Yamamoto M, Kosar-Hashemi B, Abrahams S, Morell MK., “Comparison of starch-branching enzyme genes reveals evolutionary relationships among isoforms. Characterization of a gene for starch-branching enzyme IIa from the wheat genome donorAegilops tauschii”, Plant Physiol 125(3):1314-24 (Mar. 2001).
Edwards A, Fulton DC, Hylton CM, Jobling SA, Gidley M, Rossner U, Martin C, Smith AM. (1999) A combined reduction in activity of starch synthases II and III of potato has novel effects on the starch of tubers. Plant J 17(3):251-261.
Flipse E, Huisman JG, Vries BJD, Bergervoet JEM, Jacobsen E, Visser RGF. (1994) Expression of a wild-type GBSS gene introduced into an amylose-free potato mutant byAgrobacterium tumefaciensand the inheritance of the inserts at the microsporic level. Theor Appl Genet. 88:369-375.
Jane J, Chen Y, Lee L, McPherson A, Wong K, Radosavljevic, Kasemsuwan T. (1999) Effects of amylopectin branch chain length and amylose content on the gelatinization and pasting properties of starch. Cereal Chem. 76(5): 629-637.
Jobling SA, Schwall GP, Westcott RJ, Sidebottom CM, Debet M, Gidley MJ, Jeffcoat R, Safford R. (1999) A minor form of starch branching enzyme in potato (Solanum tuberosumL.) tubers has a major effect on starch structure: cloning and characterization of multiple forms of SBE A. Plant J 18(2):163-171.
Kortstee AJ, Vermeesch AMS, Vries BJD, Jacobsen E, Visser RGF (1996) Expression ofEscherichia colibranching enzyme in tubers of amylose-free transgenic potato leads to an increased branching degree of the amylopectin. Plant J 10(1):83-90.
Lloyd JR, Landschutze V, Kossmann J. (1999) Simultaneous antisense inhibition of two starch-synthase isoforms in potato tubers leads to accumulation of grossly modified amylopectin. Biochem J. 338:515-521.
Martin C, Smith AM. (1995) Starch biosynthesis. Plant Cell. 7:971-985.
Myers AM, Morell MK, James MG, Ball SG. (2000) Recent progress toward understanding biosynthesis of the amylopectin crystal. Plant Physiol. 122: 989-997.
Safford R, Jobling SA, Sidebottom CM, Westcott RJ, Cooke D, Tober KJ, Strongitharm BH, Russell A, Gidley MJ. (1998) Consequences of antisense RNA inhibition of starch branching enzyme activity on properties of potato starch. Carbohydrate Polymers 35: 155-168.
Schwall GP, Safford R, Westcott RJ, Jeffcoat R, Tayal A, Shi YC, Gidley MJ, Jobling SA. (2000) Production of very-high-amylose potato starch by inhibition of SBE A and B. Nat Biotechnol. 18(5):551-554.
SEO B, Kim S, Scott MP, Singletary GW, Wong K, James MG, Myers AM. (2002) Functional interactions between heterologously expressed starch-branching enzymes of maize and the glycogen synthases of brewer's yeast. Plant Physiology 128:1189-1199.
Shi YC, Seib PA. (1992) The structure of four waxy starches related to gelatinization and retrogradation. Carbohydr Res. 227:131-145.
Shi YC, Seib PA. (1995) Fine structure of maize starches from four wx-containing genotypes of the W64A inbred line in relation to gelatinization and retrogradation. Carbohydrate Polymers. 26:141-47.
Smith AM. (2001) The Biosynthesis of Starch Granules. Biomacromolecules 2:335-341.
Song Y, Jane J (2000) Characterization of barley starches of waxy, normal, and high amylose varieties. Carbohydrate Polymers. 41:365-377.
Stark DM, Timmerman KP, Barry GF, Preiss J, Kishore GM. (1992) Regulation of the amount of starch in plant tissues by ADP glucose pyrophosphorylase. Science. 258:287-292.
Sun C, Sathish P, Ahlandsberg S, Jansson C. (1998) The two genes encoding starch-branching enzymes IIa and IIb are differentially expressed in barley. Plant Physiol. 118:37-49.
Terada R, Nakajima M, Isshiki M, Okagaki RJ, Wessler SR, Shimamoto K. (2000) Antisense Waxy genes with highly active promoters effectively suppress Waxy gene expression in transgenic rice. Plant Cell Physiol. 41(7):881-888.
Wolters AA, Visser RG. (2000) Gene silencing in potato: allelic differences and effect of ploidy. Plant Mol Biol. 43:377-386.
Yoo S, Spalding MH, Jane J. (2002) Charterization of cyanobacterial glycogen isolated from the wild type and from a mutant lacking of branching enzyme. Carbohydrate Research 337:2195-2203.
Yuan RC, Thompson DB, Boyer CD. (1993) Fine structure of amylopectin in relation to gelatinization and retrogradation behavior of maize starches from three wx-containing genotypes in two inbred lines. Cereal Chem. 70:81-89.

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