### Figure 4 caption

**Figure 4** Whole cell spectra of selected strains. Spectra were measured after three days incubation with 5 mM rhamnose in 1 cm cuvettes after equalizing the OD750 across all strains and subtracting the OD750 as a baseline correction. WT represents the *Synechocystis* sp. PCC 6803 wild type, while the control strain is *Synechocystis* sp. PCC 6803 Δshc pSHDY rhaS, from which the overexpression strains were constructed. The visually blue phenotype of the sqs overexpression strain in the cuvette is pictured in the bottom left.

### Figure 4 source

https://www.frontiersin.org/files/Articles/1024981/fpls-14-1024981-HTML/image_m/fpls-14-1024981-g004.jpg

### Supplementary Figure 5 caption

**Supplementary Figure 5.** Effect of overexpressions on growth of the different strains after 3 days of
growth with the indicated rhamnose concentration. Control denotes the Δshc strain in which the
overexpression strains were constructed, WT denotes the *Synechocystis* sp. PCC 6803 wild type.
Average values from three biological replicates, error bars represent the standard deviation.

### Supplementary Figure 5 source

https://www.frontiersin.org/articles/10.3389/fpls.2023.1024981/full#supplementary-material

### Supplementary Figure 6 caption

**Supplementary Figure 6:** Spectra of *Synechocystis* cells after 3 days incubation with 5 mM
rhamnose, measured in 1 cm cuvettes. OD750 values were equalized across all measurements in the
cuvettes, then the spectra were baseline corrected by subtracting the OD750 value.

### Supplementary Figure 6 source

https://www.frontiersin.org/articles/10.3389/fpls.2023.1024981/full#supplementary-material