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Populus 717 wildtype versus 35S::EVE1

ABSTRACT: RNA was extracted from xylem tissue of the first 5cm of the lower stem of four replicates of three overexpression lines and wild-type. Samples were collected from 3-month-old Populus from growth-chamber experiments at 25oC and 35oC.

ORGANISM(S): Populus tremula x Populus alba Populus trichocarpa

PROVIDER: GSE58681 | GEO | 2014/06/24

SECONDARY ACCESSION(S): PRJNA253338

REPOSITORIES: GEO

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Populus 717 wildtype versus 35S::EVE1

Project description:RNA was extracted from xylem tissue of the first 5cm of the lower stem of four replicates of three overexpression lines and wild-type. Samples were collected from 3-month-old Populus from growth-chamber experiments at 25oC and 35oC. 2 treatments (growth at 25C and 35C temperature), 4 genotypes (wildtype and 3 35S::EVE1 independent lines) and 4 biological reps per genotype

2014-06-24 | E-GEOD-58681 | biostudies-arrayexpress

Populus balsamifera developmental tissue series

Project description:This study examined the transcriptome level attributes of a variety of Populus balsmifera tissues and organs. The tissues include seedlings grown under three light regimes, young leaves, mature leaves, roots, differentiating xylem, female catkins, and male catkins.

2009-01-15 | GSE13990 | GEO

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

2013-05-16 | GSE46946 | GEO

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. Populus tomentosa newly formed developing xylem and lignified xylem were taken for RNA extraction and hybridization on Affymetrix microarrays. CB2009304-A and CB2009304-B from newly formed developing xylem, CB2009304-G and CB2009304-H from lignified xylem.

2013-05-16 | E-GEOD-46946 | biostudies-arrayexpress

Populus metacaspases - The function of two type II metacaspases in woody tissues of Populus trees

Project description:Metacaspases (MCs) are cysteine proteases that are implicated in programmed cell death of plants. AtMC9 (Arabidopsis thaliana Metacaspase9) is a member of the Arabidopsis MC family that controls the rapid autolysis of the xylem vessel elements, but its downstream targets in the xylem remain uncharacterized. PttMC13 and PttMC14 were identified as AtMC9 homologs of hybrid aspen (Populus tremula x tremuloides). A proteomic analysis was conducted in xylem tissues of transgenic hybrid aspen trees which carried either an overexpression or an RNAi construct for PttMC13 and PttMC14. The proteomic analysis revealed modulation of levels of both previously known targets of metacaspases, such as Tudor staphylococcal nuclease, heat shock proteins and 14-3-3 proteins as well as novel targets, such as homologs of the PUTATIVE ASPARTIC PROTEASE 3 (PASPA3) (PASPA) and the cysteine protease RD21 by PttMC13 and PttMC14. We identified here the pathways and processes that are modulated by PttMC13 and PttMC14 in xylem tissues. In particular, the results indicate involvement of PttMC13 and/or PttMC14 in controlling not only xylem cell autolysis but also cell death. This work provides a valuable reference dataset on xylem specific metacaspase functions for future functional and biochemical analyses.

2018-01-02 | PXD007958 | Pride

Expression data from two year old shoot apex and mature 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 shoot apex and mature xylem. We used microarrays to detail the global programme of gene expression in shoot apex and mature xylem. Populus tomentosa shoot apex and mature xylem were taken for RNA extraction and hybridization on Affymetrix microarrays.CB2009304-C and CB2009304-D from shoot apex, CB2009304-G and CB2009304-H from mature xylem.

2013-04-23 | E-GEOD-46312 | biostudies-arrayexpress

Expression data from two year old shoot apex and mature xylem of Populus tomentosa

2013-04-23 | GSE46312 | GEO

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

Affymetrix data from Populus nectaries versus leaves

Project description:To identify the genes encoding the defense proteins and gain a deeper insight into the Ptt nectary transcriptom, poplar DNA microarrays (Affymetrix) were hybridized with RNA of extrafloral nectaries and nectary-free leaf sections Many plant species grow extrafloral nectaries and produce nectar to attract carnivore arthropods as defenders against herbivores. We studied in Populus how insect feeding feeds back on nectary development and activity. Two nectary types evolved with Populus trichocarpa (Ptr) and P. tremula x P. tremuloides (Ptt) were studied from their ecology down to the genes and molecules.

2012-08-03 | GSE23897 | GEO

Poplar tissue types 2

Project description:Global gene expression pattern of phloem and xylem tissue were determined using a Nimblegen microarray based on JGI v1.1 gene models. Xylem tissue from both Populus trichocarpa Nisqually-1 and Populus tremula X Populus alba hybrid were used in the study.

2010-08-01 | GSE21485 | GEO

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