Mutated plant sheds light on DNA repair. (mouse-eared cress DNA repair gene identified) From: Science News | Date: September 25, 1993| Author: | COPYRIGHT 1993 Science Service, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information) Copyright information

If DNA mutations caused by excessive sunbathing can promote skin cancer in humans, how do plants manage to get away without harm? Rooted in place, many plant species take in much higher doses of ultraviolet (UV) radiation than human sun-lovers do during a tanning marathon.

Though plant cells are adept at amending the damage caused by UV-B, the most dangerous portion of sunlight, scientists have been in the dark about how they do it. Now, geneticists have created a mutant strain of cress that is unable to repair UV-induced DNA damage.

Ann B. Britt, a geneticist at the ...

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