Concept explainers
To determine: The number of transgenic plants that the researchers used for the test.
Introduction: Transgenic plants are the plants whose genomes are altered or modified by inserting a desired foreign gene using certain genetic engineering techniques. Production of transgenic plant was intended for the expression of desired trait in the plants that does not occur naturally in them. Transgene (foreign gene) can be from unrelated origin. Nowadays, transgenic plants play a significant role in phytoremediation (using plants to clean up the environment). The transgenic plants have the transgene, which makes the plant efficient to remove, utilize, and detoxify the pollutants. It can be used to clean up an important soil and air contaminant.
Answer to Problem 1DAA
Correct answer: Six transgenic plants were used for the given test.
Explanation of Solution
The given experiment was started with a plan to produce genetically-engineered plants that are able to remediate (phytoremediation) the soil and air contaminated with organic solvents. A mammalian gene that encodes for the cytochrome P450 (break downs organic solvents) was delivered into poplar plants using the vector Agrobacterium tumefaciens. The transgenic poplar plants were tested for their capability to uptake trichloroethylene (TCE) from air. Refer Figure 28.1, “TCE uptake from air by transgenic poplar plants” in the textbook. The graphical representation showed that six poplar plants were selected for the experiment. Out of these, four were planted transgenic plants, one was bare-rooted transgenic plant, and one was control planted transgenic plant with no gene.
Want to see more full solutions like this?
Chapter 28 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
- In what ways does plant tissue culture help in the development of GM crops?arrow_forwardTrace the genetic steps in the development of a peanut plant that isresistant to insect larvae (table given). (Hint: You need to useAgrobacterium.)arrow_forwardA crude extract sample was obtained from a plant and was found effective as an anti-diabetic agent in-vitro. The researcher wants to determine the appropriate lethal dose of the sample because it was intended to be administered orally. Literature studies show that plants under the same genus with the source of the crude extract has a lethal dose of 300 mg/Kg BW. Your group performed the test following the OECD Guideline 423 and used the recommended starting dose. The derived approximate LD50 was 25 mg/Kg BW. 1.With the approximate LD50 of the plant sample tested in the case, determine and interpret the TI of the sample if the ED50 is: A. 40 mg/Kg BW B. 18 mg/Kg BW C. 3 mg/Kg Bwarrow_forward
- A crude extract sample was obtained from a plant and was found effective as an anti-diabetic agent in-vitro. The researcher wants to determine the appropriate lethal dose of the sample because it was intended to be administered orally. Literature studies show that plants under the same genus with the source of the crude extract has a lethal dose of 300 mg/Kg BW. Your group performed the test following the OECD Guideline 423 and used the recommended starting dose. The derived approximate LD50 was 25 mg/Kg BW. Why would a drug with a TI of less than 1 be considered as the primary treatment of a certain disease?arrow_forwardAn important goal of molecular botanists is to insert the genes for nitrogen fixation into crop plants such as corn or wheat. Why would the insertion of such genes be useful? What changes in farming practices would this technique allow?arrow_forwardWhat makes the species of Agrobacterium ideal for genetic engineering? Describe its characteristics and its role in producing transgenic plants.arrow_forward
- Elaborate the advantage and disadvantages of Nano-Plant Growth Regulatorarrow_forwardList five main groups of natural plant growth regulators. Write a note ondiscovery, physiological functions and agricultural/horticultural applicationsof any one of them.arrow_forwardWhy is “Agrobacterium-mediated genetic transformation” in plants described as natural genetic engineer of plants?arrow_forward
- You have been chosen as the lead student gardener for the CSUMB Future Farmers of America Club (FFAC). Your club is looking to you and your Bio211 plant experience to guide them. You arrive at the new FFAC garden plots where your club mates show you their cherry tree that they've been having trouble with. Originally, its leave would change color and fall off the tree, as expected, in the autumn. However, more recently the leaves started changing color and falling off in the spring time. Which hormone does the tree likely have in excess and why?arrow_forwardDescribe how herbicide resistance has been bioengineered in crop plantsarrow_forwardA nine-year research and experimentations have successfully developed rice plants with golden hue kernels instead of the usual white kernels. What is the advantage of this modified rice plant? Select one: To make the plant become resistant to herbivores. To provide sufficient rice produce due to its shorter cycle. To add nutritional value to the rice kernels. To allow easy harvesting and processing.arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning