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Genetic research

Genome-Wide Identification and Transcriptional Profiling of the LBD Gene Family in the Camphor Tree

Strategic Insights

— 1 min read

Researchers at Nanjing Forestry University have made a groundbreaking discovery in the field of plant science. By examining the genome of the camphor tree (Cinnamomum camphora), a team of scientists has identified 40 Lateral Organ Boundaries Domain (LBD) transcription factors that play a crucial role in the development and secondary metabolism of this plant. These findings have significant implications for understanding the ecological and economic importance of the camphor tree, as well as its potential applications in various industries.

Key Takeaways:

  • The camphor tree's genome contains 40 LBD genes, which are involved in lateral organogenesis and secondary metabolism.
  • Of the 40 LBD genes, 5 are intron-free, while 7 genes have 2 or more introns each.
  • Detailed annotation of CcLBD promoter regions identified 33 cis-regulatory elements linked to hormone signaling and stress adaptation.
  • Transcriptional dynamics of the 40 CcLBD genes were profiled across seven tissues of the camphor tree, revealing that 22 genes were highly expressed in flowers and 12 were predominantly expressed in roots.
  • Phylogenetic analysis classified all CcLBD proteins into two clades, each harboring a conserved lateral organ boundaries (LOB) domain.
  • Integrative omics analyses implicated miR408 and miR2950c in post-transcriptional regulation of CcLBD5 via mRNA cleavage.

Statistics:

  • The camphor tree's genome contains 40 LBD genes.
  • 22 of the 40 LBD genes are highly expressed in flowers.
  • 12 of the 40 LBD genes are predominantly expressed in roots.
  • 33 cis-regulatory elements were identified in the CcLBD promoter region.
  • 5 of the 40 LBD genes are intron-free.
  • 7 of the 40 LBD genes have 2 or more introns each.

Sources:

  • Genome-wide identification, transcriptional profiling, and miRNA-binding site analysis of the LBD gene family in the camphor tree. Frontiers in Plant Science, 2025,16.
  • Jiaqi Zhang, State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, People's Republic of China.
  • Luyang Shan, Haoran Qi, Caihui Chen, Yongda Zhong, Meng Xu.
  • Nanjing Forestry University.
  • Frontiers Media S.A.
  • http://journal.frontiersin.org/journal/plant-science.

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