(A) Stability of Gfp variants in E. coli following a downshift. •, MV1190(λ-pir)(pJBA28) expressing Gfpmut3*; ×, MV1190(λ-pir)(pJBA120) expressing Gfp(ASV); ▪, MV1190(λ-pir)(pJBA118) expressing Gfp(AAV); ▴, MV1190(λ-pir)(pJBA116) expressing Gfp(LVA); and ⧫, MV1190(λ-pir)(pJBA114) expressing Gfp(LAA). (B) Stability of Gfp variants in P. putida following a downshift. •, KT2442 (lacIq) expressing Gfpmut3*; ×, KT2442 (lacIq) expressing Gfp(ASV); ▪, KT2442 (lacIq) expressing Gfp(AAV); ▴, KT2442 (lacIq) expressing Gfp(LVA); and ⧫, KT2442 (lacIq) expressing Gfp(LAA).