SCL14 Inhibits the Functions of the NAC043-MYB61 Signaling Cascade to Reduce the Lignin Content in Autotetraploid Populus hopeiensis.

ABSTRACT: Whole-genome duplication often results in a reduction in the lignin content in autopolyploid plants compared with their diploid counterparts. However, the regulatory mechanism underlying variation in the lignin content in autopolyploid plants remains unclear. Here, we characterize the molecular regulatory mechanism underlying variation in the lignin content after the doubling of homologous chromosomes in Populus hopeiensis. The results showed that the lignin content of autotetraploid stems was significantly lower than that of its isogenic diploid progenitor throughout development. Thirty-six differentially expressed genes involved in lignin biosynthesis were identified and characterized by RNA sequencing analysis. The expression of lignin monomer synthase genes, such as PAL,

SUBMITTER: Wu J 

PROVIDER: S-EPMC10051758 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature