Over-expression of Arabidopsis AtCHR23 chromatin remodeling ATPase results in increased variability of growth and gene expression

Table 1 Root length reduction and AtCHR23 mRNA up-regulation in transgenic Arabidopsis lines with modified AtCHR23 expression

Plant line	Root length (mm)^a	CV^b	VAR^c	P(VAR)^d	Reduction in root length (%)^e	Fold up-regulation AtCHR23^f
Columbia – WT	40.53	0.052	4.76	na	na	na
AtCHR23-4ov	31.89	0.164	27.63	^***	21.6	30
AtCHR23-5ov	34.65	0.161	31.32	^***	14.9	40
atchr23	41.81	0.080	12.26	^*	nd	na
G_AtCHR23-1ov	35.04	0.161	31.46	^***	14.0	15
G_AtCHR23-3ov	31.46	0.163	26.49	^***	22.7	13
CHR23:G_AtCHR23ov	36.26	0.164	35.47	^**	11.0	2

^aMean root length; ^bcoefficient of variation calculated as ratio of the standard deviation to the mean; ^cvariance in root length; ^dsignificance of variance relative to WT as determined by Levene’s test, ^*, P < 0.05; ^**, P < 0.01; ^***; P < 0.001; ^ereduction in root length relative to WT; ^ffold up-regulation of AtCHR23 relative to WT. WT, wild-type; na, not applicable; nd, not detected.