Immunoblot showing the differential intracellular
localization of SS in sh1 and sus1 mutants. A,
Membrane distribution of SS in the root tissue of non-mutant and mutant
maize seedlings. B, The distribution of SS in the root soluble
fractions of mutant genotypes. Air, Aerobic; S, 48-h submerged; NM,
non-mutant; sh and sus, mutants lacking SH1 and
SUS1, respectively (though sus1 is known to be a leaky
mutant with aberrant transcripts, no signals were detected with the
monoclonal antisera used).