Here we address whether monolignol transporters are involved in the process of C-lignin production in the seed coat of Cleome. By interrogating expression data from transcriptome and proteome analyses of seed coat material during development, coupled with uptake and efflux assays using a yeast expression system, we identified two major facilitators of caffeyl alcohol transport, annotated as a polyol and a sucrose transporter respectively. Gain of function studies support the ability of these transporters to facilitate caffeyl alcohol transport in planta. These results are discussed in relation to the balance between G and C-lignin accumulation in the Cleome seed coat, and the evolution of C-lignin formation across the plant kingdom.
[doi:10.25345/C5WP9TJ1G]
[dataset license: CC0 1.0 Universal (CC0 1.0)]
Keywords: C-lignin ; caffeyl alcohol ; monolignol ; proteome
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Paul Abraham, ORNL, United States |
| Submitting User: | pabraham_ornl |
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