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Fig. 4. GUS::ARF2 protein levels during dark-induced senescence.
PARF2::GUS::ARF2 plants
(Li et al., 2004) were grown
under short day conditions for 6 weeks. Mature, fully expanded leaves (A-D) or
young, expanding leaves (E,F) were detached and stained immediately (A,E) or
were placed in darkness for 2 days (B), 4 days (C,F) or 6 days (D) prior to
staining.