2022
DOI: 10.1093/pcp/pcac161
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Molecular Mechanisms Underlying the Establishment and Maintenance of Vascular Stem Cells inArabidopsis thaliana

Abstract: The vascular system plays pivotal roles in transporting water and nutrients throughout the plant body. Primary vasculature is established as a continuous strand, which subsequently initiates secondary growth through cell division. Key factors regulating primary and secondary vascular development have been identified in numerous studies, and the regulatory networks including these factors have been elucidated through omics-based approaches. However, the vascular system is composed of a variety of cells such as … Show more

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Cited by 12 publications
(7 citation statements)
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“…d , Deviations of ten motifs displaying enrichment consistent with the gene body chromatin accessibility of their associated TFs. The left heatmap panel illustrates ten TF motif enrichments, consistent with the known TF dynamics among cell types [ CIRCADIAN CLOCK ASSOCIATED 1 ( CCA1 ), LATE ELONGATED HYPOCOTYL ( LHY ) and JUNGBRUNNEN1 ( JUB1 ) 87 : mesophyll; CYCLING DOF FACTOR 3 ( CDF3 ) and CDF5 88 : companion cells; DOF1.8 89 and KANADI2 ( KAN2 ) 90 : vascular-related cells; ANTHOCYANINLESS2 ( ANL2 ) 91 , HOMEODOMAIN GLABROUS ( HDG1 ) 92 , and HDG11 93 ]. The right panels highlight one motif ( HDG1 ) enriched with ACRs in epidermis, where their cognate TFs are known to accumulate.…”
Section: Extended Data Figmentioning
confidence: 77%
See 1 more Smart Citation
“…d , Deviations of ten motifs displaying enrichment consistent with the gene body chromatin accessibility of their associated TFs. The left heatmap panel illustrates ten TF motif enrichments, consistent with the known TF dynamics among cell types [ CIRCADIAN CLOCK ASSOCIATED 1 ( CCA1 ), LATE ELONGATED HYPOCOTYL ( LHY ) and JUNGBRUNNEN1 ( JUB1 ) 87 : mesophyll; CYCLING DOF FACTOR 3 ( CDF3 ) and CDF5 88 : companion cells; DOF1.8 89 and KANADI2 ( KAN2 ) 90 : vascular-related cells; ANTHOCYANINLESS2 ( ANL2 ) 91 , HOMEODOMAIN GLABROUS ( HDG1 ) 92 , and HDG11 93 ]. The right panels highlight one motif ( HDG1 ) enriched with ACRs in epidermis, where their cognate TFs are known to accumulate.…”
Section: Extended Data Figmentioning
confidence: 77%
“…O. sativa , P. miliaceum , and U. fusca showed a higher percentage of proximal ACRs, but a lower percentage of distal ACRs compared to Z. mays and S. bicolor , likely reflecting differences in intergenic space and overall genome sizes. d , A heatmap illustrates nine TF motif enrichments, consistent with the known TF dynamics among cell types [CIRCADIAN CLOCK ASSOCIATED 1 (CCA1), LATE ELONGATED HYPOCOTYL (LHY) and JUNGBRUNNEN1 (JUB1): mesophyll 33 ; CYCLING DOF FACTOR 3 (CDF3) and CDF5: companion cells 34 ; DOF1.8: vascular-related cells 35 ; ANTHOCYANINLESS2 (ANL2), HOMEODOMAIN GLABROUS 1 (HDG1), and HDG11: epidermis 27,36,37 ]. e, A heatmap illustrates collapsed TF motif enrichment patterns into super motif families across various species for each cell type.…”
Section: Mainmentioning
confidence: 78%
“…Building on this working hypothesis, we also note that auxin, as AUXIN RESPONSE FACTOR ( ARF ), has been shown to have the capacity to generate ectopic expression of WOX4, PXY , and AtHB8 (Smetana et al, 2019). Auxin is further implicated because it plays a role in wound‐induced cambium formation by inducing Arabidopsis NAC DOMAIN CONTAINING PROTEIN ( ANAC ) in incised Arabidopsis shoots (reviewed in Shimadzu et al, 2023). Therefore, localized auxin signaling may define the site of an ectopic cambium through misexpression of conserved vascular genes.…”
Section: How Transgenic Phenotypes Can Inform Our Understanding Of Na...mentioning
confidence: 99%
“…Vascular development in plants occurs in two phases. During the primary phase, vascular cells formed in the root meristem undergo periclinal divisions to form a xylem axis flanked by two opposite phloem poles (Shimadzu et al, 2022). In the secondary phase, the cells surrounding the vasculature divide to form multiple ringshaped cell layers called the vascular cambium.…”
Section: De Novo Vascularizationmentioning
confidence: 99%
“…However, de novo vascularization is also a process that plants initiate when vascular connectivity is lost due to an injury. During wound healing and grafting, parenchyma cells first form a proliferating cambium and then differentiate into de novo phloem and xylem elements (Melnyk et al, 2015;Shimadzu et al, 2022). Since the xylem elements found at nematode infection sites are asymmetric and form irregular networks like wound-induced xylem, it is thought that they are induced as a plant response to nematode infection (Bartlem et al, 2014, Melnyk, 2017.…”
Section: De Novo Vascularizationmentioning
confidence: 99%