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Fig. 3. In situ expression pattern of INCO in longitudinal sections of
wild-type (A-E) and mutant (F,G) plants. (A,C) INCO accumulates in
vegetative P0 and P1 primordia and in axillary meristems (AM) in wild-type
seedlings. (B) INCO messenger in initiating bracts (P0) and in young
floral meristems (FM) of a wild-type inflorescence. Signal is absent from the
apical dome of vegetative (SAM) and inflorescence (IM) meristems. (D) Stage 2
floral meristem with emerging sepal primordia (sep). (E) Floral meristem at
late stage 3. (F) INCO expression is not affected by the
flo-662 mutation. (G) Reduced INCO expression in
squa mutant inflorescences. Serial sections probed with FLO
revealed signals as in wild type, proving that decreased INCO
expression is not an artefact (not shown). IM* is an axillary
inflorescence meristem. (H,I) In inco inflorescences, expression of
the floral meristem identity controlling genes FLO and SQUA
is comparable with wild type (not shown). Scale bars: 200 µm in A,B,F-I;
100 µm in C-E.
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