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Table 3 Loss of SPT function confers increased sensitivity to NPA

From: The bHLH transcription factor SPATULA regulates root growth by controlling the size of the root meristem

Genotype

Concentration of NPA (μM)

Root length (mm)

% of mock

Col-0

   
 

0

17.5 ± 3.3

NAa

 

0.1

9.5 ± 1.5

55%

 

0.5

4.3 ± 1.0

25%

 

1

3.6 ± 0.7

21%

 

2μM

2.2 ± 0.6

13%

spt-11

   
 

0

23.4 ± 2.9b

NA

 

0.1

8.0 ± 1.0b

34%

 

0.5

4.6 ± 1.0b

20%

 

1

3.8 ± 0.4b

16%

 

2

2.7 ± 0.5

12%

  1. Values are means ± standard deviation. aNA, not applicable. bValues significantly different from wild type at P < 0.05.