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Transcriptome profiling data for secondary vascular tissue regeneration in Populus tomentosa

ABSTRACT: Regeneration is a common strategy for plants to repair their damaged body plans after attack from other organisms or physical assaults. Trees with bark girdling on a large scale will grow new bark within one month and this bark regeneration after girdling system has been proven to be an efficient method to study secondary vascular development as well as plant tissue regeneration in vivo. We herein show the molecular features of differentiating xylem cell fate switch process during secondary vascular tissue (SVT) regeneration in Populus. Based on our data, we propose a working model to illustrate the molecular dynamics underlying xylem cell fate switch process during SVT regeneration, which is significant to understand the pattern formation during the SVTs regeneration and also would shed light on the mechanisms of tissue regeneration in plants.

ORGANISM(S): Populus tomentosa Populus sp.

PROVIDER: GSE25309 | GEO | 2012/07/26

SECONDARY ACCESSION(S): PRJNA134801

REPOSITORIES: GEO

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Transcriptome profiling data for secondary vascular tissue regeneration in Populus tomentosa

Project description:Regeneration is a common strategy for plants to repair their damaged body plans after attack from other organisms or physical assaults. Trees with bark girdling on a large scale will grow new bark within one month and this bark regeneration after girdling system has been proven to be an efficient method to study secondary vascular development as well as plant tissue regeneration in vivo. We herein show the molecular features of differentiating xylem cell fate switch process during secondary vascular tissue (SVT) regeneration in Populus. Based on our data, we propose a working model to illustrate the molecular dynamics underlying xylem cell fate switch process during SVT regeneration, which is significant to understand the pattern formation during the SVTs regeneration and also would shed light on the mechanisms of tissue regeneration in plants. Specific regenerated tissues of Populus at different stages were isolated by tangential cryo-sectioning. Total RNA from cryo-sections representing different regenerating tissues was extracted for Affymetrix Poplar Whole Genome Array hybridization. Five samples (two replicates for each sample) were used for gene expression analysis: differentiating xylem (diX, Stage 0), dedifferentiating xylem cells (deX, Stage I), regenerated phloem (rPh, Stage II), differentiating regenerated cambium (diC, Stage II) and regenerated cambium (rC, Stage III). In addition, one pooled genomic DNA sample from cryo-sections of differentiating xylem from two trees was isolated for DNA hybridization to produce a new CDF file that was used to mask out some potentially cross-hybridizing probesets from the standard Affymetrix Poplar Genome Array. Supplementary file: poplar.cdf

2012-07-25 | E-GEOD-25309 | biostudies-arrayexpress

Populus tomentosa

Project description:Transcriptome profiling data for secondary vascular tissue regeneration in Populus tomentosa

| PRJNA134801 | ENA

Populus tomentosa

Project description:Expression values from 6 time points during the regeneration of secondary vascular System (SVS)

| PRJNA290339 | ENA

The Populus Homeobox Gene ARBORKNOX2 Regulates Secondary Growth in trees

Project description:Currently little is known about the genetic mechanisms regulating the vascular cambium or the secondary growth of stems. We show here that the Populus Class I KNOX homeobox gene ARBORKNOX2 (ARK2) regulates both cell division in the cambium region and the differentiation of daughter cells in secondary xylem and phloem. ARK2 is expressed in the shoot apical meristem, and the vascular cambium region, reflecting some overlap in the regulation of these meristems. ARK2 is expressed broadly in the cambium region and in differentiating lignified cells types before becoming progressively restricted to the cambium. Populus overexpressing ARK2 present stem phenotypes with precocious cambium formation, delayed differentiation of cambium daughter cells, a wider cambium region, and ultimately less phloem fibers and secondary xylem. In contrast, Populus expressing RNAi or amicroRNA that target ARK2 transcripts present precocious differentiation of secondary phloem fibers and xylem, and ultimately more secondary xylem tissue and thicker secondary cell walls in phloem fibers and secondary xylem cells. These phenotypes in turn correlate with changes in the expression of genes affecting cell division, auxin, and cell wall synthesis and lignification that indicate that ARK2 primarily affects woody tissue development by regulation of cell differentiation. Notably, wood properties associated with secondary cell wall synthesis are negatively associated with ARK2 expression, including lignin and cellulose content. Together, our results suggest that ARK2 functions primarily by negatively regulating cell differentiation during secondary growth. We propose that ARK2 may identify a co-evolved regulatory module that influences complex wood properties relevant to ecological, industrial, and biofuels applications.

2009-10-01 | GSE15595 | GEO

Evaluation of differential expression in the vascular transcriptome among Picea species

Project description:The goal of this experiment is to assess tissue preferential transcript accumulation and fold difference between two tissues that support secondary vascular growth in three spruces: Picea glauca, Picea sitchensis and Picea mariana. Tissues compared are secondary xylem (wood forming tissue located on the internal side of the cambial meristem) and phelloderm (composite sample of the phloem and phelloderm tissues located on the outer side of the cambial meristem). One-color comparison of 3 spruce species in 2 tissue types: xylem and phelloderm. 20 biological repetitions per tissue for Picea glauca and 15 for Picea sitchensis and Picea mariana, for a total of 100 slides.

2012-02-18 | E-GEOD-35922 | biostudies-arrayexpress

Expression values from 6 time points during the regeneration of secondary vascular System (SVS)

Project description:Secondary vascular system (SVS) development resulted from cambial growth is a currently not well understood process. Therefore, more studies are needed to shed more lights on the molecular mechanisms underpinning the cambial activity. The regeneration of SVS from debarked trunk that can mimic the vascular cambium-driven wood formation has developed and could be used to revealed a larger number of differentially expressed genes during the stages of cambium formation and xylem differentiation in Populus tomentosa. We used microarrays to detail the global programme of gene expression in 6 time points during the regeneration of SVS.

2015-07-21 | GSE71094 | GEO

Evaluation of differential expression in the vascular transcriptome among Picea species

2012-02-18 | GSE35922 | GEO

Global transcriptome profiling of poplar bark during stored N remobilization

Project description:Seasonal nitrogen (N) storage and reuse is important to the N-use efficiency of temperate deciduous trees. In poplar, bark storage proteins (BSPs) accumulate in protein storage vacuoles of the bark parenchyma and xylem ray cells in the fall. During spring growth, N from stored BSPs is remobilized and utilized by growing shoots. The goal of this study is to investigate global gene expression changes in the bark during BSP remobilization and shoot regrowth under long-day conditions.

2014-03-01 | GSE49982 | GEO

proteomic analysis of the xylem development stage in Populus tomentosa

Project description:In order to further determine whether genes related to xylem development have changed at the protein level, we conducted proteomic analysis of stem xylem at different stages.

2022-02-17 | PXD025418 | Pride

Expression data from two year old newly formed developing xylem and lignified xylem of Populus tomentosa

Project description:We take the two year old plant for sampling. Use the Affymetrix poplar gene chip to elucidate the gene functions and mechanisms in Populus tomentosa newly formed developing xylem and lignified xylem. We used microarrays to detail the global programme of gene expression in newly formed developing xylem and lignified xylem.

2013-05-16 | GSE46946 | GEO

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