What is the difference between Golden Rice and Golden Rice 2?

Golden Rice 1 contains about 1.6 g of total carotenoids per gram of dry weight of grain. Golden Rice 2 contains as much as 37 g total carotenoids per gram of dry weight of grain, of which 31 g/g is -carotene. Biofortified rice with high levels of -carotene is in an early stage of development.

What do the two genes in Golden Rice do?

A japonica variety of rice was engineered with three genes necessary for the rice grain to produce and store beta-carotene. These included two genes from the daffodil plant and a third from a bacterium.

Is Golden Rice being used?

Heralded as a genetically modified crop with the potential to save millions of lives, Golden Rice has just been approved as safe for human and animal consumption by regulators in the Philippines. But even after nearly three decades of development, Golden Rice is still beset by problems, according to Stone.

What was the purpose of golden rice 1 and 2?

ABSTRACT: Golden Rice 1 was developed to help control vitamin A deficiency (VAD).To construct Golden Rice 2, the phytoene synthetase gene (psy) from maize and the carotene desaturase gene (crtl) from Erwinia uredovorawere inserted into rice.

Are there any carotenoids in Golden Rice 2?

Golden Rice 2 (Paine and others 2005), reported in this case study, was constructed using the same genetic strategy applied in the construction of Golden Rice 1, with the exception that the phytoene synthase gene from Zea maysreplaced the gene isolated from Narcissus pseudonarcissus. Golden Rice 2 contains approximately 20-fold more carotenoids

What are the steps in the Golden Rice Project?

Golden Rice. The creation of much plant biotechnology involves at least three steps: 1) researchers transfer related genes into the plant embryos; 2) the embryos incorporate the new genes into their DNA, produce the desired proteins, and grow and produce seeds; and 3) the successful heritability of the new genes,…

What are the enzymes in golden rice 1?

Phytoene desaturase and ‐carotene desat‐urase are involved in catalyzing the introduction of 2 double bonds, while lycopene ‐cyclase is encoded by the lcy gene. In Golden Rice 1, the former 2 enzymes were replaced by a bacterial carotene desaturase capable of introducing all 4 double bonds.