Table 1. Selected protein spots identified from the DIGE two-dimensional gels shown in Figure 3.

The mab1/wild type column shows the ratios of mab1-1 protein abundance to wild type (Col), with significant changes shown in the t test column; the experiment was performed with three replicates. Proteins whose spot numbers are indicated in Figure 3, C to E, were identified by matrix-assisted laser-desorption ionization time of flight tandem mass spectrometry. The predicted molecular mass and pI of the match are shown along with the molecular weight search score (P < 0.05, when the score is >37), number of peptides matched to tandem mass spectra, and percentage coverage of the matched sequence.

Spot No.	Accession	Description	mab1/Wild Type	t Test	Score	Matched Peptides	Coverage (%)	Mass	pI
1	At5g50850	MAB1	7.28	0.0021	188	5	14.3	39436	5.67
2	At5g50850	MAB1	35.41	0.0003	290	5	14.3	39436	5.67
3	At5g50850	MAB1	−15.30	0.0017	138	3	11.3	39436	5.67
4	At5g50850	MAB1	−25.15	0.0015	298	6	14.3	39436	5.67
5	At1g59900	IAR4L	−1.63	0.0011	183	3	8.5	43488	7.16
6	At1g24180	IAR4	−1.98	0.0034	175	4	12.2	43787	8.03
7	At1g03090	MCCA	2.33	0.0051	64	1	2.9	78776	6.31