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. Author manuscript; available in PMC: 2014 Apr 9.
Published in final edited form as: Plant Cell Environ. 2011 Jun 20;34(9):1431–1442. doi: 10.1111/j.1365-3040.2011.02341.x

Table 4.

Double bond index (DBI) of membrane lipids in A. thaliana and C. himalaica during high and low temperature alteration in the growth chamber. ‘R’ and ‘F’ indicate that the temperature was rising and falling, respectively. DBI = (Σ[N × mol% lipid])/100, N is the total number of double bonds in the two fatty acid chains of each glycerolipid molecule. The relative change (RC) in DBI from −7 to 45°C is the percentage value for the difference between the DBI at −7 and 45°C over the DBI at −7°C; the largest relative change (LRC) in DBI is the percentage value for the difference between the maximum and minimum DBI over the minimum DBI. Values in the same row with different letters are significantly different (P < 0.05). Values are means ± SD (n = 5).

Lipid
class		 Plant
species		 Double bond index RC
(%)		 LRC
(%)
−7°C 22°C R 45°C 22°C F −7 to
45°C
DGDG A. thaliana 4.56 ± 0.04a 4.55 ± 0.07a 4.56 ± 0.05a 4.57 ± 0.07a 0.0 0.4
C. himalaica 4.54 ± 0.06a 4.45 ± 0.06a 4.47 ± 0.06a 4.47 ± 0.10a −1.5 2.0
MGDG A. thaliana 5.29 ± 0.03b 5.28 ± 0.01b 5.35 ± 0.02a 5.27 ± 0.01b 1.1 1.5
C. himalaica 5.26 ± 0.03a 5.21 ± 0.04ab 5.25 ± 0.03bc 5.18 ± 0.05c −0.2 1.5
PA A. thaliana 3.04 ± 0.07a 3.07 ± 0.06a 2.83 ± 0.15b 2.98 ± 0.12a −6.9 8.5
C. himalaica 3.00 ± 0.09b 3.18 ± 0.02a 2.89 ± 0.10b 2.98 ± 0.11b −3.7 10.0
PC A. thaliana 3.50 ± 0.03a 3.41 ± 0.04b 3.20 ± 0.07c 3.32 ± 0.03d −8.6 9.4
C. himalaica 3.38 ± 0.03a 3.34 ± 0.04a 3.09 ± 0.03c 3.22 ± 0.04b −8.6 9.4
PE A. thaliana 3.35 ± 0.01a 3.33 ± 0.03a 3.11 ± 0.04c 3.18 ± 0.02b −7.2 7.7
C. himalaica 3.30 ± 0.01a 3.28 ± 0.01a 3.09 ± 0.01c 3.17 ± 0.03b −6.4 6.8
PS A. thaliana 2.61 ± 0.03b 2.66 ± 0.04a 2.60 ± 0.05bc 2.55 ± 0.02c −0.4 4.3
C. himalaica 2.56 ± 0.01ab 2.59 ± 0.01a 2.53 ± 0.01bc 2.52 ± 0.05c −1.2 2.8
PI A. thaliana 2.59 ± 0.03a 2.53 ± 0.03b 2.50 ± 0.03c 2.51 ± 0.02bc −3.5 3.6
C. himalaica 2.53 ± 0.02a 2.48 ± 0.01b 2.41 ± 0.02c 2.48 ± 0.02b −4.7 5.0
PG A. thaliana 2.14 ± 0.14a 2.09 ± 0.07ab 1.99 ± 0.06bc 1.96 ± 0.04c −7.0 9.2
C. himalaica 1.77 ± 0.06a 1.76 ± 0.03a 1.57 ± 0.02b 1.58 ± 0.06b −11.3 12.7
Total double bond index
Total lipids A. thaliana 4.14 ± 0.05a 4.21 ± 0.01a 4.16 ± 0.10a 4.03 ± 0.10b 0.5 4.5
C. himalaica 4.05 ± 0.02a 4.01 ± 0.04ac 3.95 ± 0.07bc 3.85 ± 0.06d −2.5 5.2