<i><scp>WOX</scp>14</i> promotes bioactive gibberellin synthesis and vascular cell differentiation in Arabidopsis

Denis, Erwan; Kbiri, Nadia; Mary, Viviane; Claisse, Gaëlle; Silva, Natalia Conde e; Kreis, Martin E.; Deveaux, Yves

doi:10.1111/tpj.13513

Cited by 74 publications

(47 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In our assay, wox7‐1 mutants did not show noticeable phenotypes during rosette development but displayed slightly shorter primary root length compared to WT (Appendix Fig S7D and E). WOX14 has been known to act in various aspects of plant development including GA biosynthesis, the lignification of inflorescence stems, and the promotion of procambial cell proliferation and differentiation (Etchells et al , ; Denis et al , ). wox14‐1 mutants showed shorter primary root length compared to WT as reported (Appendix Fig S7D and E) (Deveaux et al , ).…”

Section: Resultsmentioning

confidence: 99%

Epigenetic reprogramming by histone acetyltransferase HAG1/AtGCN5 is required for pluripotency acquisition in Arabidopsis

et al. 2018

View full text Add to dashboard Cite

Shoot regeneration can be achieved through a two-step process involving the acquisition of pluripotency on callus-induction media (CIM) and the formation of shoots on shoot-induction media. Although the induction of root-meristem genes in callus has been noted recently, the mechanisms underlying their induction and their roles in shoot regeneration remain unanswered. Here, we show that the histone acetyltransferase HAG1/AtGCN5 is essential for shoot regeneration. In developing callus, it catalyzes histone acetylation at several root-meristem gene loci including, ,, , and, providing an epigenetic platform for their transcriptional activation. In turn, we demonstrate that the transcription factors encoded by these loci act as key potency factors conferring regeneration potential to callus and establishing competence for shoot regeneration. Thus, our study uncovers key epigenetic and potency factors regulating plant-cell pluripotency. These factors might be useful in reprogramming lineage-specified plant cells to pluripotency.

show abstract

Section: Resultsmentioning

confidence: 99%

Epigenetic reprogramming by histone acetyltransferase HAG1/AtGCN5 is required for pluripotency acquisition in Arabidopsis

et al. 2018

View full text Add to dashboard Cite

show abstract

“…WUSCHEL-related homeobox 13 like (WOX13L) genes are involved in zygote development and stem cell formation in the moss P. patens 30 . A. thaliana WOX13 promotes replum formation in the fruit 31 and WOX14 promotes vascular cell differentiation 32 . The Anthoceros genomes have four WOX13L members ( Supplementary Fig.…”

Section: Genes Related To Sporophyte Developmentmentioning

confidence: 99%

Anthoceros genomes illuminate the origin of land plants and the unique biology of hornworts

et al. 2020

View full text Add to dashboard Cite

Hornworts comprise a bryophyte lineage that diverged from other extant land plants >400 million years ago and bears unique biological features, including a distinct sporophyte architecture, cyanobacterial symbiosis and a pyrenoid-based carbonconcentrating mechanism (CCM). Here, we provide three high-quality genomes of Anthoceros hornworts. Phylogenomic analyses place hornworts as a sister clade to liverworts plus mosses with high support. The Anthoceros genomes lack repeat-dense centromeres as well as whole-genome duplication, and contain a limited transcription factor repertoire. Several genes involved in angiosperm meristem and stomatal function are conserved in Anthoceros and upregulated during sporophyte development, suggesting possible homologies at the genetic level. We identified candidate genes involved in cyanobacterial symbiosis and found that LCIB, a Chlamydomonas CCM gene, is present in hornworts but absent in other plant lineages, implying a possible conserved role in CCM function. We anticipate that these hornwort genomes will serve as essential references for future hornwort research and comparative studies across land plants.

show abstract

“…In Arabidopsis inflorescence stems, the WUSCHEL HOMEOBOX RELATED 4 (WOX4) and WOX14 genes have been shown to promote the rate of cell division in the vascular cambium (Denis et al, 2017;Etchells et al, 2013;Campbell et al, 2016). Inflorescence stems from the wox4 wox14 double mutant develop significantly less secondary xylem in the interfascicular regions (Etchells et al, 2013).…”

Section: Ahl15 Promotes Secondary Growth Independent Of the Pxy-wox Pmentioning

confidence: 99%

A novel pathway controlling cambium initiation and - activity via cytokinin biosynthesis in Arabidopsis

Rahimi

Karami

Lestari

et al. 2020

Preprint

View full text Add to dashboard Cite

Plant secondary growth, also referred to as wood formation, includes the production of secondary xylem, which is derived from meristematic cambium cells embedded in vascular tissues. Despite the importance of secondary xylem in plant growth and wood formation, the molecular mechanism of secondary growth is not yet well understood. Here we identified an important role for the Arabidopsis thaliana (Arabidopsis) AT-HOOK MOTIF CONTAINING NUCLEAR LOCALIZED 15 (AHL15) gene, encoding for a putative transcriptional regulator, in controlling vascular cambium activity and secondary xylem formation. Secondary xylem development was significantly reduced in inflorescence stems of the Arabidopsis ahl15 lossof-function mutant, whereas AHL15 overexpression led to extensive secondary xylem formation. AHL15 expression under a vascular meristem-specific promoter also enhanced the amount of interfascicular secondary xylem. Moreover, AHL15 appeared to be required for the enhanced secondary xylem formation in the Arabidopsis double loss-of-function mutant of the SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1) and FRUITFULL (FUL) genes. A well-known central regulator of cambial activity is the plant hormone cytokinin. We showed that the expression of two cytokinin biosynthesis genes (ISOPENTENYL TRANSERASE (IPT) 3 and 7) is decreased in ahl15 loss-of-function mutant stems, whereas the secondary xylem deficiency in these mutant stems can be resorted by cambium-specific expression of the Agrobacterium tumefaciens IPT gene, indicating that AHL15 acts through the cytokinin pathway. These findings support a model whereby AHL15 acts as a central factor inducing vascular cambium activity downstream of SOC1 and FUL and upstream of IPT3 , IPT7 and LOG4, LOG5 governing the rate of secondary xylem formation in Arabidopsis inflorescence stems.

show abstract

WOX14 promotes bioactive gibberellin synthesis and vascular cell differentiation in Arabidopsis

Cited by 74 publications

References 64 publications

Epigenetic reprogramming by histone acetyltransferase HAG1/AtGCN5 is required for pluripotency acquisition in Arabidopsis

Epigenetic reprogramming by histone acetyltransferase HAG1/AtGCN5 is required for pluripotency acquisition in Arabidopsis

Anthoceros genomes illuminate the origin of land plants and the unique biology of hornworts

A novel pathway controlling cambium initiation and - activity via cytokinin biosynthesis in Arabidopsis

Contact Info

Product

Resources

About