When temperatures rise, plants mysteriously lose their ability to defend against invading pathogens—but there may be a fix.
,” as He puts it. There are a few things that make it the perfect test subject. One is that the humble weed’s genome is fairly short, part of the reason it was the first plant to be fully sequenced. Another is the unique way its code can be modified. For most plants, the process is painstaking. New genetic material is introduced in a petri dish, borne by bacteria that slip into the plant’s cells. Once that happens, those modified cells must be cultured and coaxed into new roots and stems.
of heat-responsive genes that affect flowering and growth, ended in crushing disappointment. Generations of grad students kept the project going. “My job is mainly to be their cheerleader,” he says., and it seemed to act as a “master switch” for a number of the steps involved in making SA. The process of taking those genetic instructions and producing a protein was being stifled by an intermediate molecular step. The key was to bypass it.
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