ArticleBMC genomics2025
Comprehensive analysis of the INDETERMINATE DOMAIN (IDD) gene family in Marchantia polymorpha brings new insight into evolutionary developmental biology.
Article in BMC genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Comprehensive analysis of IDD family genes and their expression patterns in barley.BMC plant biology · 2026Article
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7 authors.
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Abstract
backgroundSHORTROOT (SHR) and SCARECROW (SCR) are key regulators of plant cell fate. An increasing number of studies have illustrated that the SHR-SCR pathway depends on some INDETERMINATE DOMAIN (IDD) family transcription factors in regulating genes involved in tissue and organ morphogenesis, nutrients transport and metabolism, photoperiodic flowering and stress response. Recent genome sequencing and analysis revealed that only seven IDDs exist in the liverwort Marchantia polymorpha, one of the early diverging extant land plant lineages. However, little is known concerning how the IDDs and the SHR/SCR-IDD pathway work in the ancestral land plants.
resultsIn this study, IDD gene family members of this liverwort and other classic model plants were classified into seven branches on the basis of phylogenetic analysis. Gene structure and protein motif analyses suggested that most of the MpIDDs are comparatively evolutionary conserved. Protein structure prediction showed that MpIDDs display similar core domain organization with the IDD proteins from the same branches. Cis-regulatory element prediction demonstrated that MpIDDs might be hormone and stress responsive. The expression levels of most MpIDDs display tissue specificities and could be changed by hormone treatment. All the MpIDDs are located in the nucleus, and most of them have autoactivation activity. Yeast two-hybrid assays confirmed the interactions between MpGRAS8/MpSHR and MpIDD3, MpIDD4 or MpIDD5, as well as MpGRAS3/MpSCR and MpIDD1 or MpIDD2. Taken together, our results provide comprehensive information on IDD gene family in M. polymorpha for further exploring their function in depth, and highlight the importance of the SHR/SCR-IDD pathway in plant development and evolution.
conclusionsThrough bioinformatics analysis and experimental determination of expression patterns, subcellular localization, autoactivation, and protein interaction, this study provided crucial information for a deeper understanding of the functions of MpIDDs in evolutionary developmental studies.
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