Title:
STARCH SYNTHASES
Document Type and Number:
WIPO Patent Application WO/2003/023024
Kind Code:
A1
Abstract:
A process for producing novel starch having different starch properties using an enzyme system obtained by genetically modifying an enzyme system synthesizing plant starch&semi a method wherein a gene encoding a branching enzyme of a starch−producing organism is transferred into a variant lacking this enzyme so as to overexpress the enzyme compared with the original wild type&semi a method of constructing a variant showing a different expression dose of the enzyme from the original wild type&semi the thus obtained variant showing a different expression dose of the branching enzyme from the original wild type&semi and a method of producing starch while controlling the expression of isoamylase during the starch production as in rice, which comprises transferring a gene having rice isoamylase promoter and a promoter located in the upstream of isomaylase gene into a plant.
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Inventors:
NAKAMURA YASUNORI (JP)
FUJITA NAOKO (JP)
SATOH HIKARU (JP)
FUJITA NAOKO (JP)
SATOH HIKARU (JP)
Application Number:
PCT/JP2002/009221
Publication Date:
March 20, 2003
Filing Date:
September 10, 2002
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
NAKAMURA YASUNORI (JP)
FUJITA NAOKO (JP)
SATOH HIKARU (JP)
NAKAMURA YASUNORI (JP)
FUJITA NAOKO (JP)
SATOH HIKARU (JP)
International Classes:
C08B30/00; C12N9/10; C12N15/54; C12N15/82; (IPC1-7): C12N5/10; A01H5/00; C08B30/00; C12N9/10; C12N9/26; C12N15/09; C12N15/54; C12N15/63; C12P19/04; C12P19/16; C12Q1/68
Domestic Patent References:
| WO1999014314A1 | 1999-03-25 | |||
| WO2001062934A1 | 2001-08-30 |
Other References:
CHEE HARN ET AL.: "Isolation and characterization of the zSSIIa and zSSIIb starch synthase cDNA clones from maize endsperm", PLANT MOL. BIOL., vol. 37, no. 4, 1998, pages 639 - 649, XP002202701
MING GAO ET AL.: "Isolation, characterization and expression analysis of starch synthase 11a cDNA from wheat (Triticum aestivum L.)", NATIONAL RESEARCH COUNCIL CANADA, vol. 43, no. 5, October 2000 (2000-10-01), pages 768 - 775, XP001035027
UMEMOTO T. ET AL.: "Mapping of a gene responsible for the difference in amylopectin structure between japonica-type and indica type rice varieties", THEOR. APPL. GENET., vol. 104, no. 1, 2002, pages 1 - 8, XP002961028
AIKO NISHI ET AL.: "Biochemical and genetic analysis of the effects of amylose-extender mutation in rice endosperm", PLANT PHYSIOLOGY, vol. 127, October 2001 (2001-10-01), pages 459 - 472, XP002961029
IMPARL-RADOSEVICH JENNIFER M. ET AL.: "Analysis of purified maize starch synthase IIa and IIb: SS isoforms can be distinguished based on their kinetic properties", ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS, vol. 362, no. 1, February 1999 (1999-02-01), pages 131 - 138, XP002961030
RAHMAN SADEQUR ET AL.: "Comparison of starch-branching enzyme genes reveals evolutionary relationships among isoforms. Characterization of a gene for starch-branching enzyme IIa from the wheat D genome donor aegilops tauschii", PLANT PHYSIOLOGY, vol. 125, March 2001 (2001-03-01), pages 1314 - 1324, XP002961031
MING GAO ET AL.: "Isolation, characterization and expression analysis of starch synthase 11a cDNA from wheat (Triticum aestivum L.)", NATIONAL RESEARCH COUNCIL CANADA, vol. 43, no. 5, October 2000 (2000-10-01), pages 768 - 775, XP001035027
UMEMOTO T. ET AL.: "Mapping of a gene responsible for the difference in amylopectin structure between japonica-type and indica type rice varieties", THEOR. APPL. GENET., vol. 104, no. 1, 2002, pages 1 - 8, XP002961028
AIKO NISHI ET AL.: "Biochemical and genetic analysis of the effects of amylose-extender mutation in rice endosperm", PLANT PHYSIOLOGY, vol. 127, October 2001 (2001-10-01), pages 459 - 472, XP002961029
IMPARL-RADOSEVICH JENNIFER M. ET AL.: "Analysis of purified maize starch synthase IIa and IIb: SS isoforms can be distinguished based on their kinetic properties", ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS, vol. 362, no. 1, February 1999 (1999-02-01), pages 131 - 138, XP002961030
RAHMAN SADEQUR ET AL.: "Comparison of starch-branching enzyme genes reveals evolutionary relationships among isoforms. Characterization of a gene for starch-branching enzyme IIa from the wheat D genome donor aegilops tauschii", PLANT PHYSIOLOGY, vol. 125, March 2001 (2001-03-01), pages 1314 - 1324, XP002961031
Attorney, Agent or Firm:
Saeki, Norio (Taka-ai Building 15-2, Nihonbashi 3-chom, Chuo-ku Tokyo, JP)
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