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. 2006 Jul 7;2(7):e106. doi: 10.1371/journal.pgen.0020106

Figure 3. Effect of FLM on Thermal Sensitivity in Short Days.

Figure 3

(A) QTL maps of NdC RILs for TLN in 27 °C short days (red lines) and 23 °C short days (black lines) and for thermal sensitivity, as expressed by the slope of the regression line mean over the environmental mean in arbitrary units (blue lines). The phenotype data for the 23 °C map are from [24]. The prominent QTL corresponding to FLM on Chromosome 1 disappears at 27 °C, while the QTL on Chromosome 2 becomes more significant. The QTL for thermal sensitivity colocalize with FLM. A likelihood of odds threshold determined after 1,000 permutations is given. The same threshold was obtained for each of the phenotypes.

(B) Thermal sensitivity of various genotypes as above. Col_F and Nd_F refers to the mean sensitivity of NdC recombinant inbred lines that are homozygous for the Col wild-type allele (Col_F) and homozygous for the Nd-1 FLM deletion (Nd_F). For comparison the sensitivity of flc-3 is shown. flm-3 is a T-DNA insertion allele at FLM locus in Col background. The last genotype is the accession Ei-6, which has the same FLM deletion as Nd-1. The effect of loss of FLM in different backgrounds varies considerably between backgrounds, indicating natural variation in this pathway.