Movie S1.

Cotton swab touch treatment and harvesting of tissues grown on agar for proteomic analysis. Touch treatment was applied to 3-week-old adult plants grown on agar. Touch was applied for 40 times (1 time/s) with a cotton swab (touch strength, 84 ± 80 mg). The aerial rosette leaves were touched randomly. Liquid nitrogen was poured onto the plants within one second of the touch stopping. Tissues were then stored at –80 ° C for proteomics analysis. One set of tissues (one glass jar of touch and one glass jar of control) was poured with liquid nitrogen and harvested simultaneously.

Quantitative and functional posttranslational modification proteomics reveals that TREPH1 plays a role in plant touch-delayed bolting

Kai Wang, Zhu Yang, Dongjin Qing, Feng Ren, Shichang Liu, Qingsong Zheng, Jun Liu, Weiping Zhang, Chen Dai, Madeline Wu, E. Wassim Chehab, Janet Braam, and Ning Li

PNAS. 2018. 115:E10265-E10274 DOI: 10.1073/pnas.1814006115