Potatoes are a very important vegetable crop in the US and many farmers and consumers rely on them. Because of the increase in temperature caused by climate change, many crops, including potatoes, are suffering because they can't tolerate the high temperatures.
What biological trait(s) are needed to solve this problem and in what organism(s) would you find a gene for this trait?
Resistance against high temperature is needed. Genes for this trait can be obtained from microorganisms inhabiting hot springs.