Some damage caused in tobacco necrosis virus by u.v. radiation could be repaired in darkness in (dark reactivation) but not in French bean or in tobacco. By contrast, photoreactivation of the irradiated virus was observed in French bean and in tobacco but not in . The kind of damage in u.v.-irradiated virus that is susceptible to repair by photoreactivation appears to be repaired by dark reactivation in . In conditions without evidence of any repair, the quantum yield for inactivation of the nucleic acid inside the virus is about 6.5 × 10, and the amount of radiation energy that must be absorbed by the nucleic acid to reduce infectivity to 50% is about 0.3 /mg.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error