Purified recombinant proteins GST‐SRL10, His‐CATB and total proteins from 20‐d‐old seedlings of WYJ7 were used for cell‐free degradation assay, and was carried out as previously described (Bello et al., 2019 (link); Lv et al., 2014 (link)). The dilution for the mouse anti‐GST antibody (TransGen Biotech) and the mouse anti‐His antibody (TransGen Biotech) was 1:5000. Reactions were terminated at indicated time points, and the protein abundance was visualized via immune detection against anti‐His and anti‐GST. Total proteins from NIL‐SRL10Hap1 and NIL‐SRL10Hap3 were used for thermal stability analysis of protein and incubated under 28 °C and 42 °C for 0, 30, 60 and 90 min respectively. The dilution for the rabbit anti‐SRL10 antibody was 1:10000.