Table 1.

Sphingolipid Long-Chain Base Composition of Leaves from Wild-Type (Col-0) and LCB1i-4 RNAi Suppression Plants

Plantt18:1(Z)t18:1(E)t18:0d18:1(Z)d18:1(E)d18:0
Wild type19.6 ± 1.064.2 ± 3.26.0 ± 0.8a1.2 ± 0.37.6 ± 1.81.0 ± 0.3a
LCB1i-414.1 ± 1.248.2 ± 3.327.5 ± 4.5a0.9 ± 0.25.0 ± 1.44.5 ± 0.7a
  • Values shown are mol %. Each value is the mean of 10 independent measurements ± sd. t18:1(E or Z), 4-hydroxy-8-(trans or cis)-sphingenine; t18:0, 4-hydroxysphinganine or phytosphingosine; d18:1(E or Z), 8-(trans or cis)-sphingenine; d18:0, sphinganine or dihydrosphingosine.

  • a Student's t test indicated that both t18:0 and d18:0 are significantly increased in LCB1i-4 plants compared with wild-type plants (P < 0.001).