Figure 38.1

-Iron shortage is the most common human nutritional deficiency in the world.Plants are the major source of iron in most diets,so researchers are interested in understanding their mechanism of iron intake and in developing iron-rich crops.Recently researchers showed (Vert et al. ,IRT1,an Arabidopsis transporter essential for iron uptake from the soil and for plant growth.Plant Cell 14 [2002]:
1223-33)that under iron-deficient conditions,the IRT1 gene is responsible for most of the iron uptake activity in roots.To demonstrate the importance of IRT1 for iron accumulation,researchers measured leaf iron content in irt1-1 mutants containing deactivated IRT1.Mutant plants were grown in iron-poor soil (irt1-1 in graph)and soil rich with iron (irt1-1 +Fe in graph).Wild-type (WT)plants grown in iron-poor soil were used as a control.Which of the graphs represent the data researchers might have received in their experiment?

Question

Figure 38.1
 
-Iron shortage is the most common human nutritional deficiency in the world.Plants are the major source of iron in most diets,so researchers are interested in understanding their mechanism of iron intake and in developing iron-rich crops.Recently researchers showed (Vert et al. ,IRT1,an Arabidopsis transporter essential for iron uptake from the soil and for plant growth.Plant Cell 14 [2002]:
1223-33)that under iron-deficient conditions,the IRT1 gene is responsible for most of the iron uptake activity in roots.To demonstrate the importance of IRT1 for iron accumulation,researchers measured leaf iron content in irt1-1 mutants containing deactivated IRT1.Mutant plants were grown in iron-poor soil (irt1-1 in graph)and soil rich with iron (irt1-1 +Fe in graph).Wild-type (WT)plants grown in iron-poor soil were used as a control.Which of the graphs represent the data researchers might have received in their experiment?

Quizplus · Accepted Answer

The Answer of Figure 38.1
 
-Iron shortage is the most common human nutritional deficiency in the world.Plants are the major source of iron in most diets,so researchers are interested in understanding their mechanism of iron intake and in developing iron-rich crops.Recently researchers showed (Vert et al. ,IRT1,an Arabidopsis transporter essential for iron uptake from the soil and for plant growth.Plant Cell 14 [2002]:
1223-33)that under iron-deficient conditions,the IRT1 gene is responsible for most of the iron uptake activity in roots.To demonstrate the importance of IRT1 for iron accumulation,researchers measured leaf iron content in irt1-1 mutants containing deactivated IRT1.Mutant plants were grown in iron-poor soil (irt1-1 in graph)and soil rich with iron (irt1-1 +Fe in graph).Wild-type (WT)plants grown in iron-poor soil were used as a control.Which of the graphs represent the data researchers might have received in their experiment?

Figure 38.1 -Iron Shortage Is the Most Common Human Nutritional Deficiency in Human