TABLE 3.

Fatty acid levels for each putative ecotype

Putative ecotypeMean (SD) level of fatty acidaHeat adaptation indexb
High-temp adaptingLow-temp adapting
14:016:0Iso 14:0Iso 15:0Iso 16:0Iso 17:0SumAnteiso 15:0Anteiso 17:016:1 ω11c16:1 ω7c alcoholIso 17:1 ω10cSum
PE 120.51 (0.39)3.33 (0.62)1.32 (0.31)28.77 (4.66)3.18 (1.07)9.13 (2.01)42.40 (4.07)39.06 (4.01)9.43 (1.78)1.93 (3.08)0.51 (0.19)1.24 (0.73)52.16 (3.13)0.82 (0.12) C
PE 190.29 (0.04)2.93 (0.45)0.95 (0.22)23.39 (1.72)3.31 (0.65)11.71 (1.04)39.35 (1.66)39.17 (1.80)12.96 (0.96)1.16 (0.13)0.55 (0.11)2.10 (0.28)55.92 (1.78)0.71 (0.05) BD
PE 20 to 230.36 (0.07)3.48 (0.89)1.13 (0.15)24.13 (3.18)3.21 (0.44)8.86 (1.02)37.33 (3.43)42.00 (2.11)12.16 (1.72)1.49 (0.26)0.49 (0.12)1.31 (0.51)57.45 (3.09)0.65 (0.10) BD
PE 140.30 (0.04)3.38 (0.35)1.32 (0.11)23.86 (2.09)4.10 (0.35)11.67 (1.31)40.95 (2.89)39.31 (1.75)11.63 (0.92)1.07 (0.20)0.67 (0.10)1.52 (0.28)54.20 (2.75)0.76 (0.09) BC
PE 150.24 (0.03)2.68 (0.53)0.97 (0.19)19.15 (2.56)3.47 (0.73)9.21 (1.01)32.81 (2.10)44.74 (1.44)15.10 (1.40)1.01 (0.17)0.57 (0.10)1.44 (0.38)62.87 (1.99)0.52 (0.05) A
PE 9A and 9B0.28 (0.11)2.72 (0.51)0.88 (0.16)20.71 (6.67)3.00 (0.51)8.54 (0.54)33.14 (6.85)41.81 (4.23)14.95 (2.51)1.60 (0.57)0.71 (0.08)2.31 (0.56)61.38 (6.69)0.56 (0.19) AB
  • a Expressed as a fraction of the total fatty acid content. In the case of ecotypes for which few isolates were sampled, clades of closely related putative ecotypes were pooled. The sums of high-temperature-adapting and low-temperature-adapting fatty acids are reported.

  • b Ratio of high- to low-temperature-adapting fatty acids, given as mean (standard deviation). Capital letters A to D indicate the ecotypes and ecotype pools that are significantly different according to multcomp analysis (23); two ecotypes are significantly different if they do not share a capital letter.