| S Preparation
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Arabidopsis thaliana (ecotype Columbia-0) … Arabidopsis thaliana (ecotype Columbia-0) was used in this study. Non-labeled and 34S-labeled Arabidopsis plants were prepared by SI Science CO., LTD (Saitama, Japan). The plants were individually grown in pots filled with vermiculite, which were set in a plant growth room at 25 °C under a 16 h light/8 h dark cycle for 8 weeks. A non-labeled and an 34S-labeled liquid fertilizer (Table S1) was added to the plants daily. Different parts of the flower, including the silique, leaf, stem, and root, in 8-week-old Arabidopsis plants were harvested and immediately lyophilized at −55 °C. The lyophilized materials were stored at room temperature with silica gel. tored at room temperature with silica gel.
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