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Fig. 3. Short internodes in CUC2g-m4 result from a post-meristematic
reduction of growth due to a combination of fewer and smaller cells.
(A) Developmental series of flowers along the stem. Flowers are ordered
from the top (left) to the bottom (right) of the inflorescence stem. Not all
of the flowers of a CUC2g-m4 cluster (underlined) are at the same
stage. (B) SEM views of the early phases of inflorescence development.
Inflorescences were partially dissected to reveal the internodes. (C)
Epidermal cell length and number of wild-type (10 mm long), short
CUC2g-m4 (less than 1 mm long, yellow bars) or long CUC2g-m4
(30 mm long, red bars) internodes. Cell numbers per internode were calculated
based on cell and internode lengths. Number of individuals measured
(n) and standard deviations (bars) are indicated. (D)
Epidermal cell size was measured on either the inside or the outside of
twisted CUC2g-m4 stems. Scale bar: 0.5 mm in B.
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