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Fig. 1. Inflorescence and flower phenotypes of ult1 mutants and
complementation test. (A-D) Inflorescence meristems of (A) wild-type
Ler, (B) ult1-1, (C) ult1-2 and (D) ult1-3
plants. (E-G) In situ expression analysis of STM in (E) Ler,
(F) ult1-1 and (G) ult1-2 inflorescences. (H) Inflorescence
and (inset) flower of ult1-1 plants transformed with the ULT1-214
construct containing a 2.7 kb ULT1 genomic fragment. (I-L) In situ
expression analysis of WUS in (I) Ler, (J) ult1-1,
(K) ult1-2 and (L) ult1-3 inflorescences. (M-O) Analysis of
pSTM::uidA expression in (M) Ler, (N) ult1-1 and
(O) ult1-2 inflorescences. (P) Quantification of
WUS-expressing cells in Ler (WT) and all three ult1
alleles. The mean number of cells was calculated from the most central section
of eight individual inflorescences for each genotype. For each section, the
maximum number of cells found in one horizontal (width) and one vertical
(height) cell file, as well as the total number of cells expressing
WUS, was scored. The standard deviation is indicated. Scale bars: 50
µm.
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