ArticleBMC plant biology2007
Conifer R2R3-MYB transcription factors: sequence analyses and gene expression in wood-forming tissues of white spruce (Picea glauca).
Article in BMC plant biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.
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61 citing papers in PubMed, 147 citations in OpenAlex.
- A near-gapless genome assembly of Pseudocydonia sinensis uncovers unique phenylpropanoid pathways.Plant biotechnology journal · 2025Article
- Abscisic acid-induced transcription factor PsMYB306 negatively regulates tree peony bud dormancy release.Plant physiology · 2024Article
- Lignin biosynthesis pathway repressors in gymnosperms: differential repressor domains as compared to angiosperms.Forestry research · 2024Review
- Assembly and annotation of the black spruce genome provide insights on spruce phylogeny and evolution of stress response.G3 (Bethesda, Md.) · 2023Article
- Identification of Vitis vinifera MYB transcription factors and their response against grapevine berry inner necrosis virus.BMC plant biology · 2023Article
- Review
- Characterization and Interaction Analysis of the Secondary Cell Wall Synthesis-Related Transcription FactorInternational journal of molecular sciences · 2022Article
- Full-length transcriptomic identification of R2R3-MYB family genes related to secondary cell wall development in Cunninghamia lanceolata (Chinese fir).BMC plant biology · 2021Article
- Localised laccase activity modulates distribution of lignin polymers in gymnosperm compression wood.The New phytologist · 2021Article
- NAC and MYB Families and Lignin Biosynthesis-Related Members Identification and Expression Analysis inPlants (Basel, Switzerland) · 2021Article
- Systematic Analysis of the R2R3-MYB Family inFrontiers in plant science · 2021Article
- Genetic control of tracheid properties in Norway spruce wood.Scientific reports · 2020Article
- Functional and morphological evolution in gymnosperms: A portrait of implicated gene families.Evolutionary applications · 2020Article
- Functional Analysis of theFrontiers in plant science · 2019Article
- PpNAC1, a main regulator of phenylalanine biosynthesis and utilization in maritime pine.Plant biotechnology journal · 2018Article
- Is the G-Layer a Tertiary Cell Wall?Frontiers in plant science · 2018Article
- Recent Advances in the Transcriptional Regulation of Secondary Cell Wall Biosynthesis in the Woody Plants.Frontiers in plant science · 2018Review
- SPL13 regulates shoot branching and flowering time in Medicago sativa.Plant molecular biology · 2018Article
- NorWood: a gene expression resource for evo-devo studies of conifer wood development.The New phytologist · 2017Article
- A Key Role for Apoplastic HPlant physiology · 2017Article
1 more citing papers are in PubMed but not listed here.
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral members of the R2R3-MYB family of transcription factors act as regulators of lignin and phenylpropanoid metabolism during wood formation in angiosperm and gymnosperm plants. The angiosperm Arabidopsis has over one hundred R2R3-MYBs genes; however, only a few members of this family have been discovered in gymnosperms.
resultsWe isolated and characterised full-length cDNAs encoding R2R3-MYB genes from the gymnosperms white spruce, Picea glauca (13 sequences), and loblolly pine, Pinus taeda L. (five sequences). Sequence similarities and phylogenetic analyses placed the spruce and pine sequences in diverse subgroups of the large R2R3-MYB family, although several of the sequences clustered closely together. We searched the highly variable C-terminal region of diverse plant MYBs for conserved amino acid sequences and identified 20 motifs in the spruce MYBs, nine of which have not previously been reported and three of which are specific to conifers. The number and length of the introns in spruce MYB genes varied significantly, but their positions were well conserved relative to angiosperm MYB genes. Quantitative RTPCR of MYB genes transcript abundance in root and stem tissues revealed diverse expression patterns; three MYB genes were preferentially expressed in secondary xylem, whereas others were preferentially expressed in phloem or were ubiquitous. The MYB genes expressed in xylem, and three others, were up-regulated in the compression wood of leaning trees within 76 hours of induction.
conclusionOur survey of 18 conifer R2R3-MYB genes clearly showed a gene family structure similar to that of Arabidopsis. Three of the sequences are likely to play a role in lignin metabolism and/or wood formation in gymnosperm trees, including a close homolog of the loblolly pine PtMYB4, shown to regulate lignin biosynthesis in transgenic tobacco.
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