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Table 3 The effect of two brassinosteroids – castasterone (CS) and homocastasterone (HCS) – present separately and in a mixture (xCS – molar fractions of castasterone in the mixed solution) on the limiting area per molecule (Alim2]), collapse pressure (πcoll [mN/m]), pressure of the plateau (πplateau [mN/m]) and maximal compression module (Cs−1max [mN/m]) the monolayers that had been prepared from phosphocholine (PC 16:0) at 20 °C, 10 °C and 30 °C. Mean values (± SE) marked with the same letters of measurement were not different according to Duncan’s test (P ≤ .05)

From: Brassinosteroid-lipid membrane interaction under low and high temperature stress in model systems

Lipid

Applied hormones

Alim2]

πcoll[mN/m]

πplateau [mN/m]

Cs−1max [mN/m]

  

10 ℃

PC 16:0

0

40.8 ± 0.2a

69.8 ± 0.5c

-

221.5 ± 0.4a

 

CS

40.5 ± 0.2b

59.7 ± 0.4f

19.5 ± 0.4e

213.4 ± 0.7c

 

xCS = 0.75

41.0 ± 0.3a

65.1 ± 0.6e

23.2 ± 0.3d

215.4 ± 1.2b

 

xCS = 0.5

39.6 ± 0.3c

66.7 ± 0.5d

24.4 ± 0.4c

201.2 ± 0.6d

 

xCS = 0.25

39.5 ± 0.4c

70.7 ± 0.4b

25.6 ± 0.5b

184.2 ± 0.5f

 

HCS

41.2 ± 0.2a

71.4 ± 0.3a

26.1 ± 0.4a

199.8 ± 0.5e

  

20 ℃

 

0

40.1 ± 0.3c

62.3 ± 0.3a

14.1 ± 0.4c

187.8 ± 0.5a

 

CS

41.3 ± 0.3a

55.0 ± 0.4e

23.7 ± 0.4a

152.6 ± 0.4e

 

xCS = 0.75

41.3 ± 0.3a

56.0 ± 0.5d

23.9 ± 0.3a

158.4 ± 0.6c

 

xCS = 0.5

41.5 ± 0.4a

55.0 ± 0.6e

23.0 ± 0.2b

166.0 ± 0.5b

 

xCS = 0.25

40.6 ± 0.3b

59.9 ± 0.5b

23.2 ± 0.4b

148.5 ± 0.4f

 

HCS

40.0 ± 0.4c

59.0 ± 0.4c

23.2 ± 0.4b

151.9 ± 0.6d

  

30 ℃

 

0

41.1 ± 0.4c

47.1 ± 0.4b

34.2 ± 0.3c

110.7 ± 0.5a

 

CS

44.6 ± 0.2b

48.5 ± 0.6a

37.4 ± 0.4b

95.9 ± 0.6b

 

xCS = 0.75

44.4 ± 0.4b

48.3 ± 0.5a

38.3 ± 0.5a

110.4 ± 0.4a

 

xCS = 0.5

44.9 ± 0.4a

48.1 ± 0.4a

38.4 ± 0.6a

83.9 ± 0.7d

 

xCS = 0.25

44.9 ± 0.3a

48.5 ± 0.3a

38.1 ± 0.5a

83.6 ± 0.6d

 

HCS

45.0 ± 0.2a

48.4 ± 0.5a

38.6 ± 0.4a

84.6 ± 0.5c