WiscDsLox485 ATG < > //----- E1 E2 E3 E4 E bp. Col-0 arr7 ARR7 ACTIN7. s of mrna/ng total RNA (x10 3 ) ARR7.

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1 A WiscDsLox8 ATG < > > //----- E E E E E UTR +9 UTR +0 > 00bp B S D ol-0 arr7 ol-0 arr7 ARR7 ATIN7 D s of mrna/ng total RNA opie 0. ol-0 (x0 ) arr7 ARR7 Supplemental Fig.. Genotyping and RT-PR analysis of arr7 Arabidopsis mutants compared with the wild-type. A, Location of Ds transposon insertion of ARR7 in Arabidopsis. Ds insertion is indicated by triangle. ARR7 is composed of five exons (E) and four introns indicated by a grey line. Untranslated region (UTR) is indicated by thick solid line. Thin solid arrows and thick solid arrows indicate the locations of the primers for the PR of genomic ARR7 DNA. Dotted arrows indicate the locations of the primers for RT-PR of the ARR7 mrna. Numbers indicate the position of the first nucleotide of the primer relative to the AUG initiation codon. arr7: WiscDsLox8-88B ( B, PR analysis of Ds transposon insertion mutants. Genomic DNA isolated was subjected to PR with primers indicated in thick or thin arrows. S or D, PR products amplified by specific primers (S, thin arrows) or Ds transposon primers (D, thick arrows). WT, wild-type ol-0., RT-PR analysis of Ds transposon insertion mutants. Total RNA isolated from 7-day-old light-grown seedlings was subjected to RT-PR with the primers indicated in dotted arrows. The ATIN7 mrna was utilized as a loading control. D, Real-time RT-PR analysis of the ARR7 mrna levels in Ds transposon insertion mutants compared with the wild-type. opies of the transcripts from 7-day-old light-grown seedlings were plotted per ng total RNA after normalization to ATIN7 RNA. Multiplication of the number in the brackets inside the graph by the number in the y-axis generates copy numbers of the corresponding transcripts. Mean values and standard errors from biological i l triplicate experiments were plotted. Numbers on top of the bars idi indicate relative expression levels.

2 7 (x0 ) ARR7 0 / / / 8 (h) opies of mrna/ng tota al RNA RD9A (x0 ) 0 / / / 8 (h) RD9B (x0 ) 0 / / / 8 (h) Supplemental Fig.. Quantitative analysis of ARR7 expression in response to high salinity. Eleven-day-old seedlings were incubated with 00 mm Nal in darkness for varying periods of time (h),analyzed, and shown as described inthe Fig. legend.

3 B A D E F G Supplemental Fig.. Tissue expression pattern of Pro ARR7 :GUS transgenics. A-G, Tissue expression pattern of Pro ARR7 :GUS in flower (A), shoot meristem (B), root meristem (), rosette leaf (D and E), silique (F), and root (G).

4 /ng total RNA opies of mrna/ 0 8 (x0 ) BF (-BA) BF (+BA) ARR7 (-BA) ARR7 (+BA) 0 / / / 8 (h) Supplemental Fig.. Quantitative analysis of BF expression in response to cytokinin. Elevenday-old seedlings were incubated with cytokinin BA for varying periods of time (h), analyzed, and shown as described in the Fig. legend. ARR7 expression was monitored to verify the cytokinin response.

5 A opie es of mrna/ng total RNA AHK (x0 ) 0 / / / 8 (h) B opies of mrna/n ng total RNA 8 AHK (x0 ) 0 / / / 8 (h) opie es of mrna/ng total RNA AHK (x0 ) 0 / / / 8 (h) Supplemental Fig.. Analysis of AHK, AHK, andahk expression in response to cold. Elevenday-old wild-type (ol-0) seedlings were incubated at ºfor varying periods of time (h). Total RNA isolated from each treatment was subjected to quantitative real-time RT-PR with the primers for AHK (A), AHK (B), and AHK (). ATIN7 was utilized as a loading control. opies of the transcripts from cold-treated plants treated with cold were plotted per ng of total RNA after normalization to ATIN7 RNA. The transcripts levels were determined as described in the Fig. legend.

6 A ol-0 B LhGR-N(c-S) DEX pv-ipt/lhgr-n(ipt-) p (p D pv-ipt/lhgr-n(ipt-) p (p DEX d -d Supplemental Fig.. Phenotype and GUS expression of pv-ipt/lhgr-n transgenic plants. A, ol-0 wild-type plants treated with or without DEX. Plants were grown for days without or with 0 µm DEX. B, LhGR-N transgenic plants treated with or without DEX. Transgenic plants that contain activator construct expressing LhGR from the amv S promoter (9) were grown for days without or with 0 µm DEX. c-s idi indicates the line number of transgenic plants. GR idi indicates ligand binding domain of a rat glucocorticoid receptor at the amino terminus. Details on the constructs have been described previously (9)., pv-ipt/lhgr-n transgenic plants treated with or without DEX. Transgenic plants that contain activator construct expressing LhGR and construct harboring IPT encoding isopentenyl transferase enzyme and GUS under six copies of ideal lac operator (9) were grown for days without or with 0 µm DEX. The treatment of DEX can lead to activation of IPT for cytokinin biosynthesis and GUS. ipt- indicates the line number of transgenic plants. D, GUS staining of pv-ipt/lhgr-n transgenic plants treated with or without DEX. pv-ipt/lhgr-n transgenic plants were grown for 0 days and then treated without or with DEX for days or days, followed by GUS staining.

7 pv-ipt/lhgr-n(ipt-) DEX - + -d -d -d Supplemental Fig. 7. The pv-ipt/lhgr-n transgenic plants treated with DEX. The transgenic plants were grown in the light on sterile filter paper in MS plate for 0 days and transferred to MS plate with or without 0 μm DEX. Plants were then incubated for additional,, or days in the light. Pictures were taken before cold treatment at º.

8 A opies of mrna A/ng total RNA 0 AHK (x0 ) B Pro S :ARR7 mrna/ng total RNA opies of 7 0 AHK (x0 ) Pro S :ARR7 Supplemental Fig. 8. Analysis of AHK and AHK expression in arr,, or 7 mutants and Pro S :ARR7. Total RNA isolated from eleven-day-old wild-type (ol-0) seedlings were subjected to quantitative real-time RT-PR with the primers for AHK (A) andahk (B). ATIN7 was utilized as a loading control. opies of the transcripts from cold-treated plants treated with cold were plotted per ng of total RNA after normalization to ATIN7 RNA. The transcripts levels were determined as described in the Fig. legend.

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