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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 1.

Amount of lipid in each head group class and total lipids in S. medusa and S.-L. linearifolia during high and low temperature alteration in alpine screes. The relative change (RC) in lipids from −3 to 32°C is the percentage value for the difference between the values at −3 and 32°C over the value at −3°C; the largest relative change (LRC) in lipids is the percentage value for the difference between the maximum and minimum values over the minimum values. Values in the same row with different letters are significantly different (P < 0.05). Values are means ± SD (n = 3, 4, or 5).

Lipid
class		 Plant species Lipids/dry weight (nmol/mg) RC
(%)		 LRC
(%)
−1°C −3°C 32°C 6°C −3 to
32°C
DGDG S. medusa 7.7 ± 3.0a 8.2 ± 2.0a 8.2 ± 4.2a 6.5 ± 2.5a 0.0 26.2
S.-L. linearifolia 16.6 ± 5.1bc 11.6 ± 2.7c 26.2 ± 4.1a 18.5 ± 2.3b 126 126
MGDG S. medusa 9.9 ± 4.2a 12.1 ± 1.8a 10.4 ± 6.3a 7.3 ± 4.0a −14.0 65.8
S.-L. linearifolia 36.9 ± 10.1bc 27.4 ± 4.8c 66.2 ± 13.3a 41.7 ± 6.5b 142 142
PA S. medusa 1.2 ± 0.3a 1.0 ± 0.1a 0.3 ± 0.0b 0.2 ± 0.0b −70.0 500
S.-L. linearifolia 0.7 ± 0.3a 0.4 ± 0.3a 0.8 ± 0.5a 0.8 ± 0.7a 100 100
PC S. medusa 3.6 ± 0.8a 3.1 ± 1.9a 4.7 ± 2.8a 3.0 ± 1.7a 51.6 56.7
S.-L. linearifolia 7.9 ± 0.7b 6.1 ± 0.4b 12.7 ± 2.7a 7.6 ± 1.1b 109 109
PE S. medusa 0.5 ± 0.3bc 1.1 ± 0.7ab 1.3 ± 0.8a 0.1 ± 0.1c 18.2 1200
S.-L. linearifolia 4.7 ± 1.1ab 3.7 ± 1.5b 6.3 ± 2.1a 4.5 ± 0.5ab 69.8 69.8
PS S. medusa 0.02 ± 0.02bc 0.04 ± 0.03a 0.04 ± 0.01ab 0.01 ± 0.00c 0.0 300
S.-L. linearifolia 0.15 ± 0.04ab 0.06 ± 0.02c 0.19 ± 0.08a 0.11 ± 0.02ab 217 217
PI S. medusa 0.7 ± 0.0a 1.0 ± 0.5a 1.0 ± 0.4a 0.6 ± 0.2a 0.0 66.7
S.-L. linearifolia 1.8 ± 0.6b 1.5 ± 0.0b 2.9 ± 0.7a 1.7 ± 0.2b 93.3 93.3
PG S. medusa 1.7 ± 0.6ab 1.6 ± 0.6ab 2.1 ± 0.97a 1.1 ± 0.5b 31.3 90.9
S.-L. linearifolia 4.2 ± 0.3bc 3.2 ± 0.9bc 6.4 ± 0.8a 4.8 ± 0.9b 99.9 99.9
Total lipids/dry weight (nmol/mg)
Total lipids S. medusa 25.4 ± 8.22a 26.8 ± 9.7a 28.1 ± 13.1a 18.8 ± 8.64a 4.9 49.5
S.-L. linearifolia 72.4 ± 18.5bc 53.5 ± 10.7c 122 ± 22.5a 80.1 ± 9.3b 128 128