Figure 6.

Alteration of the senescence mechanism induced by neutrons. Phenotypical effect of neutrons (at 50 mGy of absorbed dose) on plant senescence 4 weeks after the treatment. Each image represents a comparison between control (NT = untreated plants) and treated (50 mGy) 15-d-old seedlings of the wild-type Col, the auxin transport mutant eir1, and two senescence mutants arf1-3 and arf2-6. The lower pictures represent an enlarged detail of rosettes show immediately above. Note: all pictures are representative of a cultivar of at least 30 plants coming from three independent experiments.