Table II.

Configuration of CMTs related to the density of CMTs and number of shortening events in three different mature root hairs

Root Hair	CMT Density	No. Shortening Events	Length	Angle
			μm	°
1	3.29 ± 1.81 (n = 20)	7.43 ± 2.73 (n = 15)	29.22 ± 2.94 (n = 15)	9 ± 1.81 (n = 15)
2	3.90 ± 1.97 (n = 31)	7.71 ± 2.78 (n = 15)	16.65 ± 0.60 (n = 23)	14 ± 1.46 (n = 23)
3	5.38 ± 2.32 (n = 40)	23.0 ± 4.80 (n = 15)	6.77 ± 0.22 (n = 40)	25 ± 3.00 (n = 40)

CMT density is the mean number of CMTs measured on different cross sections (indicated by n) through the root hair regularly spaced along root hair axis; no. shortening events is the mean number of shortening MTs (labeled red) in the root hair tube measured every 2 min in a movie over a period of 30 min (measuring no. of shortening events as count of shortening MTs only in alternate frames ensures that they are not double counted as the events don't persist long enough); length is the mean length of all CMTs in μm; angle is the angle measured between the axis of CMT (plus/minus end) and the root hair axis in degrees. Length and angle were measured in one typical frame. For every parameter the SEM was calculated, the number of repeats being indicated between brackets.