Restoration of the American Chestnut

The American chestnut was a vital tree in the eastern US, providing food and habitat for wildlife and humans. However, a fungal blight in the late 1800s devastated the population, killing over 3 billion trees. After many failed attempts to combat the blight, researchers found a solution using biotechnology. By transferring an oxalate oxidase gene from wheat into the chestnut genome, they created blight-tolerant trees. These trees can potentially restore the American chestnut population and improve forest health. The video encourages viewers to support restoration efforts through the American Chestnut Foundation.

What was one of the primary uses of the American chestnut tree before the blight?

• As an annual nut crop

• For its medicinal properties

• For its colorful flowers

• As a source of rubber

How did the chestnut blight fungus enter the United States?

• Via contaminated soil

• By air currents

• Through bird migration

• Through imported Asian chestnut trees

What toxic substance does the chestnut blight fungus produce?

• Sulfuric acid

• Oxalic acid

• Hydrochloric acid

• Acetic acid

Which enzyme is responsible for neutralizing the oxalic acid in the biotechnological solution?

• Amylase

• Lipase

• Oxalate oxidase

• Protease

From which plant was the oxalate oxidase gene transferred to the American chestnut?

• Banana

• Strawberry

• Wheat

• Corn

What is the main goal of outcrossing blight-tolerant American chestnut trees with surviving trees?

• To increase nut production

• To eliminate all fungi

• To produce a diverse and resilient population

• To create a new species

What is the main reason the American chestnut tree is still adapted to its habitat after genetic modification?

• It retains all its original genes

• It has a thicker bark

• It has a new root system

• It grows faster

What is the potential benefit of restoring the American chestnut tree population?

• Increased tourism

• Higher timber prices

• Improved forest health

• More recreational areas

Which organization is collaborating to extend the restoration efforts of the American chestnut?

• The National Park Service

• The American Chestnut Foundation

• The World Wildlife Fund

• The Environmental Protection Agency

How can individuals help with the restoration of the American chestnut?

• By planting more trees in their backyard

• By joining their local State Chapter of the American Chestnut Foundation

• By donating to wildlife charities

• By reducing carbon emissions