GM Crop Database

Database Product Description

Huahui No. 1
Host Organism
Oryza sativa (Rice)

Insect resistant, Lepidoptera.

Trait Introduction
Microparticle bombardment of plant cells or tissue
Proposed Use

Production for human food, livestock feed and industrial uses.

Product Developer
Huazhong Agricultural University

Summary of Regulatory Approvals

Country Food Feed Environment Notes
China 2009 2009 2009 View

Introduction Expand

Huahui 1 is an elite transgenic male sterile restorer line of wild rice abortive-type that expresses a Bacillus thuringiensis (Bt) δ-endotoxin and provides effective and economic control of lepidopteran insects.

Summary of Introduced Genetic Elements Expand

Code Name Type Promoter, other Terminator Copies Form
cry1Ab-Ac fusion gene of Cry1Ab delta-endotoxin (Btk HD-1) (Bacillus thuringiensis subsp. kurstaki (Btk)) and Cry1Ac delta-endotoxin (Bacillus thuringiensis subsp. kurstaki (Btk)) IR

Characteristics of Oryza sativa (Rice) Expand

Center of Origin Reproduction Toxins Allergenicity
Northern India and Southeast Asia, and southern China are believed to be the centre of origin of Asian rice (O. sativa). Wild progenitors of African cultivated rice (O. glaberrima) are grasses endemic to West Africa. Basically an autogamous plant propagating through seeds produced by self-pollination. Cross pollination between wild species and O. sativa cultivars has been reported to occur in natural habitats. Antinutrients including phytic acid, trypsin inhibitor, hemagglutinins (lectins) are present in the bran fraction. Allergenic proteins, 14-15 kDa range, present in the albumin plus globulin protein fraction from rice endosperm. Major 16 kDa allergenic protein is a member of the alpha-amylase/trypsin inhibitor family of proteins.

Donor Organism Characteristics Expand

Latin Name Gene Pathogenicity
Bacillus thuringiensis subsp. kurstaki EC2.4.2.19

While target insects are susceptible to oral doses of Bt proteins, no evidence of toxic effects in laboratory mammals or birds given up to 10 µg protein/g body weight.

This record was last modified on Tuesday, April 15, 2014