From thin to thick: major transitions during stem development

Sánchez, Pablo; Nehlin, Lilian; Greb, Thomas

doi:10.1016/j.tplants.2011.11.004

Cited by 84 publications

(73 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Class III HOMEODOMAIN LEUCINE-ZIPPER (HD-ZIP III) transcription factors have emerged as important regulators of vasculature organization and polarity in the shoot, as in the root and hypocotyl (reviewed by Sanchez et al, 2012). As mentioned above, Arabidopsis has five HD-ZIP III genes: REVOLUTA (REV/ IFL), PHABULOSA (PHB/ATHB14), PHAVOLUTA (PHV/ATHB9), CORONA (CNA/ATHB15) and ATHB8.…”

Section: Transcription Factor Mediated Regulation Of Cambial Developmmentioning

confidence: 99%

Vascular Cambium Development

Nieminen

Blomster

Helariutta

et al. 2015

The Arabidopsis Book

116

110

View full text Add to dashboard Cite

Secondary phloem and xylem tissues are produced through the activity of vascular cambium, the cylindrical secondary meristem which arises among the primary plant tissues. Most dicotyledonous species undergo secondary development, among them Arabidopsis. Despite its small size and herbaceous nature, Arabidopsis displays prominent secondary growth in several organs, including the root, hypocotyl and shoot. Together with the vast genetic resources and molecular research methods available for it, this has made Arabidopsis a versatile and accessible model organism for studying cambial development and wood formation. In this review, we discuss and compare the development and function of the vascular cambium in the Arabidopsis root, hypocotyl, and shoot. We describe the current understanding of the molecular regulation of vascular cambium and compare it to the function of primary meristems. We conclude with a look at the future prospects of cambium research, including opportunities provided by phenotyping and modelling approaches, complemented by studies of natural variation and comparative genetic studies in perennial and woody plant species.

show abstract

Section: Transcription Factor Mediated Regulation Of Cambial Developmmentioning

confidence: 99%

Vascular Cambium Development

Nieminen

Blomster

Helariutta

et al. 2015

The Arabidopsis Book

116

110

View full text Add to dashboard Cite

show abstract

“…The vascular cambium, from which all secondary xylem and phloem tissues arise during secondary growth, develops from the procambium and interfascicular parenchyma (Plomion et al, 2001; Baucher et al, 2007). As per the convention of Dettmer et al (2009), we generally refer to procambiums and (secondary) vascular cambiums as vascular meristems, which are thought to be regulated in a similar, but not identical, fashion to shoot and root apical meristems (Sanchez et al, 2012; Milhinhos and Miguel, 2013) (Figure 1). …”

Section: Vascular Patterning and Differentiationmentioning

confidence: 99%

“…BP, ATHB18, a C2H2-type zinc finger protein At3g46080, MYB20, MYB69, MYB79, MYB85, and the functionally redundant pair MYB58/MYB63 are known only to directly or indirectly regulate lignin biosynthetic genes (Mele et al, 2003; Zhou et al, 2009; Mitsuda et al, 2010), whereas BES1 is the only TF currently shown to bind to cellulose synthase ( CesA ) genes in both primary and SCWs (Xie et al, 2011) (Figures 1, 2). BP is a KNOX gene family member that maintains shoot apical meristems (Sanchez et al, 2012) and strongly represses lignification in inflorescence stems (Mele et al, 2003). MYB85 appears to specifically regulate the lignin pathway (Zhong et al, 2008a) and appears to be regulated by MYB46/MYB83 (Figure 1, Additional file 1).…”

Section: The Scw Transcriptional Network: Structure Evolution and Dmentioning

confidence: 99%

Navigating the transcriptional roadmap regulating plant secondary cell wall deposition

Hussey¹,

Mizrachi²,

Creux³

et al. 2013

Front. Plant Sci.

135

133

View full text Add to dashboard Cite

The current status of lignocellulosic biomass as an invaluable resource in industry, agriculture, and health has spurred increased interest in understanding the transcriptional regulation of secondary cell wall (SCW) biosynthesis. The last decade of research has revealed an extensive network of NAC, MYB and other families of transcription factors regulating Arabidopsis SCW biosynthesis, and numerous studies have explored SCW-related transcription factors in other dicots and monocots. Whilst the general structure of the Arabidopsis network has been a topic of several reviews, they have not comprehensively represented the detailed protein-DNA and protein-protein interactions described in the literature, and an understanding of network dynamics and functionality has not yet been achieved for SCW formation. Furthermore the methodologies employed in studies of SCW transcriptional regulation have not received much attention, especially in the case of non-model organisms. In this review, we have reconstructed the most exhaustive literature-based network representations to date of SCW transcriptional regulation in Arabidopsis. We include a manipulable Cytoscape representation of the Arabidopsis SCW transcriptional network to aid in future studies, along with a list of supporting literature for each documented interaction. Amongst other topics, we discuss the various components of the network, its evolutionary conservation in plants, putative modules and dynamic mechanisms that may influence network function, and the approaches that have been employed in network inference. Future research should aim to better understand network function and its response to dynamic perturbations, whilst the development and application of genome-wide approaches such as ChIP-seq and systems genetics are in progress for the study of SCW transcriptional regulation in non-model organisms.

show abstract

“…Dicotyledonous plants have the vascular cambium and produce a ring of vasculature, known as a eustele, with the xylem on the inside and phloem on the outside. Monocots lack the vascular cambium and instead have what is referred to as a scattered venation pattern (or atactostele) (Sanchez et al, 2012). Monocots and dicots also differ in how veins enter from leaves into stems.…”

Section: Introductionmentioning

confidence: 99%

KNOTTED1 Cofactors, BLH12 and BLH14, Regulate Internode Patterning and Vein Anastomosis in Maize

et al. 2017

View full text Add to dashboard Cite

Monocot stems lack the vascular cambium and instead have characteristic structures in which intercalary meristems generate internodes and veins remain separate and scattered. However, developmental processes of these unique structures have been poorly described. BELL1-like homeobox (BLH) transcription factors (TFs) are known to heterodimerize with KNOTTED1-like homeobox TFs to play crucial roles in shoot meristem maintenance, but their functions are elusive in monocots. We found that maize (Zea mays) BLH12 and BLH14 have redundant but important roles in stem development. BLH12/14 interact with KNOTTED1 (KN1) in vivo and accumulate in overlapping domains in shoot meristems, young stems, and provascular bundles. Similar to kn1 loss-of-function mutants, blh12 blh14 (blh12/14) double mutants fail to maintain axillary meristems. Unique to blh12/14 is an abnormal tassel branching and precocious internode differentiation that results in dwarfism and reduced veins in stems. Micro-computed tomography observation of vascular networks revealed that blh12/14 double mutants had reduced vein number due to fewer intermediate veins in leaves and precocious anastomosis in young stems. Based on these results, we propose two functions of BLH12/14 during stem development: (1) maintaining intercalary meristems that accumulate KN1 and prevent precocious internode differentiation and (2) preventing precocious anastomosis of provascular bundles in young stems to ensure the production of sufficient independent veins.

show abstract

From thin to thick: major transitions during stem development

Cited by 84 publications

References 98 publications

Vascular Cambium Development

Vascular Cambium Development

Navigating the transcriptional roadmap regulating plant secondary cell wall deposition

KNOTTED1 Cofactors, BLH12 and BLH14, Regulate Internode Patterning and Vein Anastomosis in Maize

Contact Info

Product

Resources

About