add Supplementary Figure 5 caption

assays/AbsorptionSpectraAndODMeasurements/README.md

-### Figure caption
+### 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 source
+### Figure 4 source
 
-https://www.frontiersin.org/files/Articles/1024981/fpls-14-1024981-HTML/image_m/fpls-14-1024981-g004.jpg
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+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
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