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Showing 1 to 20 of 22 for “"cambium"”.
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Non-invasive shock wave stimulated periosteum for bone tissue engineering
The cambium cells of the periosteum, which are known osteoprogenitor cells, have limited suitability for clinical applications of bone tissue engineering due to their low cell number (2-5 cells thick). Extracorporeal shock waves (ESWs) have been reported to cause thickening of the cambium layer and …
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Patterns and mechanisms of stem mortality in Acacia nigrescens induced by elephants and fire
… stripped but not burnt, simulating damage to cambium and phloem, none died in the 4-month period over which the experiment ran. This was taken as evidence that fire-induced xylem damage causes stem mortality. However, fire did kill a greater proportion of the remaining stem cambium around the …
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How do trees die following low intensity fires: Exploring the hydraulic death hypothesis
… conductance rather than the necrosis of cambium. There are a number of proposed mechanisms by which hydraulic failure can occur during a fire: firstly, plume-induced cavitation as a result of high vapor pressure deficit (VPD) in a fire-plume has been shown to reduce hydraulic conductance. …
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Causal factors and consequences of mixed-severity fire in Black Hills ponderosa pine forests
… examined ~ 2100 live trees for evidence of dead cambium within low and moderate severity patches. Dead cambium on a significant portion of tree circumference in a tree with live cambium and a vigorous crown was taken as evidence of incipient fire scar formation. Dead cambium was detected on ~ 24 …
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The Effects of Response to Intervention on Third Graders' Reading Achievement
… through V-Port database, a database supported by Cambium Learning Group. Of the three groups engaged in Response to Intervention, data analysis revealed that there was a significant difference between group one, benchmark students and group two, emerging students who received intervention, while …
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Harvested log damage and value loss associated with two ground-based harvesting systems in central Appalachia
… or veneer logs sustaining damage to the bark or cambium were recorded with additional information obtained for damage location, damage volume, damage type, and possible cause of the damage. Data were analyzed statistically to determine and rank the phases of the harvesting process relative to …
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Proteínas sHSP del castaño común (Castanea sativa Mill.) : aspectos moleculares de la respuesta al estrés abiótico
… constitutiva en el tallo, principalmente en el cambium y floema secundario. Se ha estudiado su expresión a lo largo de la maduración y germinación de la semilla. Así como en órganos vegetativos de plántulas sometidas a estrés controlado. Se ha mostrado que las temperaturas altas (32 y 40ºC) y …
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Predicting the post-fire responses of two forest tree precursors after an autumn fire in mountain fynbos
… are the most precise predictors of sprouting. Cambium death was found to be an accurate post fire predictor of mortality of both K. afri.cana and R.melanophloeos saplings. Stem height and basal diameter were good predictors of post-fire mortality of R.melanophloeos. Fire survival of K.afri.cana …
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Nipping the bud hypothesis : a comparison of savannah and forest tree responses to canopy scorch
… the hydraulic system rather than the buds and/or cambium.
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Promoter Deletion Analysis of Xylem Cysteine Protease 2 (XCP2) in Arabidopsis thaliana
… involves the coordination of vascular cambium activity, cell fate determination, cell expansion/elongation, secondary wall synthesis, programmed cell death, and cellular autolysis. The end result of tracheary element differentiation is a cellular corpse lacking a protoplast and …
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FRACTURE HEALING IN A RABBIT MODEL: A STUDY OF OSTEOCALCIN LOCALISATION
… trabeculae. Cells in the endosteum and in the cambium layer of the periosteum stained strongly for osteocalcin. Following periostel excision, bony callus originated only from the tissue s and blood vessels external to the perisostem indicated that these tissues failed to Contribute …
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Aspectos anatômicos de órgãos vegetativos (folha e caule) de Dioclea grandiflora, e sua importância química e farmacológica.
… the spinal cord parenchyma. The vascular Cambium, 2 - 3 - strata, separates the xylem phloem; The petio le has concave - convex contour, with tissue of angular type. The vascular system is of type three collateral vascular bundles arranged in form of semiarco, being more centralized and …
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Functional analysis of novel protein-protein interactions involving ROP GTPases in Arabidopsis thaliana and Populus trichocarpa
… in differentiating secondary xylem versus phloem-cambium, and designated here as poplar biomass (PB) genes. Here we report some of the interactions involving selected PB proteins and efforts to characterize their functions in Populus and Arabidopsis. Members of the ROP GTPase family, PB15 in …
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Attempts to cause differentiation of callus tissue of Abies concolor by tissue culture technique
… arranged in radial files as if produced by a cambium. The center of the incomplete ring contained parenchymatous cells primarily, but scattered tracheid-like cells with bordered pits were also noted. Photographs of the well organized incomplete ring of growth and the tracheid-like cells were …
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Discovery of New Protein-DNA and Protein-Protein Interactions Associated With Wood Development in Populus trichocarpa
… or higher in differentiating xylem vs phloem-cambium. The Y1H results identified PtrRAD1 with interactions involving several of the promoters screened. Further testing of PtrRAD1 by Yeast Two-Hybrid (Y2H) assay identified a protein-protein interaction (PPI) with poplar DIVARACATA RADIALIS …
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EXOPHYLACTIC AND NECROPHYLACTIC PERIDERM DEVELOPMENT IN AMERICAN BEECH
… from recent derivatives of the vascular cambium, as well as from living cells of the bark tissues present at the time of wounding or infection.</p>
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Vegetation management along roadside and railroad right-of-ways
… treatments involved application of herbicide on cambium tissue and effectiveness was high (95 to 100% at 1 YAT). In densely infested areas with small trees, a number of foliar herbicides can be effective. In areas with desirable species, Callery pear can be selectively removed using cut-stump …
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Life history and control of the pear borer in Virginia: Aegeria pyri Harris (Lepidoptera: Aegeriidae)
… 4. The larvae fed mainly on the inner bark and cambium of the trees, but occasionally burrowed slightly into the sapwood. 5. There were six larval stages. 6. Larger larvae devoured smaller larvae on contact with them. 7. Around 85 percent of the borers have a one-year life cycle. 8. The winter …
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Detection of the Oak Wilt Pathogen in Sapwood of Northern Oak Species Using PCR Technology
… main stem samples of red oaks with a streaking cambium, however, the molecular protocols resulted in more frequent pathogen detection. Only the molecular assays detected the pathogen in sapwood samples underlying the remnants of C. fagacearum sporulation mats on main stem samples of red oak …
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Identifying and characterizing genes that regulate vascular tissue-specific functions
… functions, we isolated xylem, phloem-cambium, and nonvascular tissues from the Arabidopsis root-hypocotyl, performed a genome-wide comparative analysis of tissue-specific transcripts using the 24K Affymetrix Arabidopsis ATH1 Genome Array (24K GeneChip), and identified potential genes …
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