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. 2020 Sep 1;7:139. doi: 10.1038/s41438-020-00360-7

Fig. 7. A proposed model for the regulation of lignin biosynthesis and granulation in citrus juice sacs by CgMYB58.

Fig. 7

In this model, CgMYB58 binds to AC elements in the promoter regions of four lignin biosynthetic genes (CgPAL1, CgPAL2, Cg4CL1, and CgC3H) and promotes their expression. ABA treatment increases the content of lignin by promoting the expression of CgMYB58 and its direct target genes, while IAA treatment inhibits this process by repressing the expression of CgMYB58 and its downstream genes