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We demonstrate that STOP1 is mono-SUMOylated at K40, K212, or K395 sites, and blocking STOP1 SUMOylation reduces STOP1 stability and the expression of STOP1-regulated genes, leading to the reduced Al resistance. Our results thus reveal the involvement of SUMOylation in the regulation of STOP1 and Al resistance in Arabidopsis.
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Qiu et al. (2020) studied this question.
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