Biofortification Flashcards
How many people does hidden hunger affect?
Estimated 2 billion
Main limiting nutrients in peoples diets?
Iodine, Vit A, Iron
why do we need iodine and where can we find it, both naturally and unnaturaly
For thyroid hormone synthesis. In seaweed naturally. Can get through salt or indirectly through animal food.
Three enzymes involved in golden rice?
- Phytoene synthase
- Phytoene Desaturase
- Carotene desaturase
Agrobacterium based vectors require what?
Right and left borders, promotor, gene, nos terminator, selective marker
What is bioremediation and how is it useful?
Can concentrate toxic chemicals in high concentrations to clean polluted land
How many plants are hyperaccumulators?
721 (can be used in mining)
Two ways to take up iron in plants
Reduce Fe3+ to Fe2+ (more soluble)
Chelators (siderophores) bind with iron and take up into roots.
Biggest consumers of rice?
China and India
Two ways to increase iron uptake in biotech
Increase NAS enzyme level that is involved in creating DMA (a chelator)
ferretin protein to increase iron storage with pr2 promotor.
Approach of the yeast model
To change metal composition, we can introduce mutant that can take up ions.
What does Brussin blue stain shoe in ths experiment?
Visualise iron concentration
What is the specific aim of this biotechnology
To increase iron concentration in the seed only.
Define an alkaloid
Chemical containing N stimulants or narcotics
What is a terpenoid?
Organic compound from isoprene subunits
