Persistent Link:
http://hdl.handle.net/10150/262534
Title:
Xylem Tracheid Development in Pinus Resinosa Seedlings in Controlled Environments
Author:
Danzer, Shelley R.; Leavitt, Steven W.; Panyushkina, Irina P.; Mergner, Andreas; Garcia, Evelyn; Best-Svob, Valeria
Affiliation:
Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ
Issue Date:
2001
Rights:
Copyright © Tree-Ring Society. All rights reserved.
Collection Information:
This item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring Research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.
Publisher:
Tree-Ring Society
Journal:
Tree-Ring Research
Citation:
Danzer, S.R., Leavitt, S.W., Panyushkina, I.P., Mergner, A., Garcia, E., Best-Svob, V. 2001. Xylem tracheid development in Pinus resinosa seedlings in controlled environments. Tree-Ring Research 57(1):45-53. 
Abstract:
Progressive tree-ring xylem cell size changes may reveal the influence of changing environment during the growing season. This study examines xylem tracheid cell growth in red pine (Pious resinosa Ait.) seedlings grown in cabinets under controlled environment, where single parameters (temperature, light, soil moisture and CO2) were varied step-wise in each chamber at ca. 30-day increments for ca. 6 months. Control and temperature treatments were replicated. Cross-sections (20 μm thick) sliced with a sliding microtome from each of four seedling stems from each cabinet were mounted on glass slides. Lumen diameters and cell-wall thickness were measured on 4 orthogonal tracheid radial files on 4 radii of each stem. Mean cell sizes were 11-17 μm among treatments and growth periods, whereas numbers of cells formed averaged 0.2-1.3 cells per day. Cell size increased throughout the experiment in most of the treatments, including one of the control treatments and those with the greatest potential to limit growth (decreasing temperature, light and soil moisture). Soil moisture was the only environmental parameter that tended to cause late declining growth, and CO, up to 500 (μmol mol⁻¹ did not appear to influence cell development. Despite a substantial range of environmental shifts in the chambers (100 μmol mol⁻¹ CO₂; 125 μEinsteins m⁻² s⁻¹ light; 8 °C temperature; 35% relative humidity; watering every day to every 5th day), the continued stem elongation and cell-size increases indicate that conditions never became significantly limiting to growth in most treatments. Although the range of environmental variability is undoubtedly much greater in most natural red pine systems, these results indicate that fairly large variations in environment during development of juvenile wood in seedlings may not leave an imprint retrievable from cell-size measurements made on the earliest rings of mature trees.
Keywords:
Dendrochronology; Tree Rings
ISSN:
2162-4585; 1536-1098
Additional Links:
http://www.treeringsociety.org

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleXylem Tracheid Development in Pinus Resinosa Seedlings in Controlled Environmentsen_US
dc.contributor.authorDanzer, Shelley R.en_US
dc.contributor.authorLeavitt, Steven W.en_US
dc.contributor.authorPanyushkina, Irina P.en_US
dc.contributor.authorMergner, Andreasen_US
dc.contributor.authorGarcia, Evelynen_US
dc.contributor.authorBest-Svob, Valeriaen_US
dc.contributor.departmentLaboratory of Tree-Ring Research, University of Arizona, Tucson, AZen_US
dc.date.issued2001-
dc.rightsCopyright © Tree-Ring Society. All rights reserved.en_US
dc.description.collectioninformationThis item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring Research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.en_US
dc.publisherTree-Ring Societyen_US
dc.identifier.journalTree-Ring Researchen_US
dc.identifier.citationDanzer, S.R., Leavitt, S.W., Panyushkina, I.P., Mergner, A., Garcia, E., Best-Svob, V. 2001. Xylem tracheid development in Pinus resinosa seedlings in controlled environments. Tree-Ring Research 57(1):45-53. en_US
dc.description.abstractProgressive tree-ring xylem cell size changes may reveal the influence of changing environment during the growing season. This study examines xylem tracheid cell growth in red pine (Pious resinosa Ait.) seedlings grown in cabinets under controlled environment, where single parameters (temperature, light, soil moisture and CO2) were varied step-wise in each chamber at ca. 30-day increments for ca. 6 months. Control and temperature treatments were replicated. Cross-sections (20 μm thick) sliced with a sliding microtome from each of four seedling stems from each cabinet were mounted on glass slides. Lumen diameters and cell-wall thickness were measured on 4 orthogonal tracheid radial files on 4 radii of each stem. Mean cell sizes were 11-17 μm among treatments and growth periods, whereas numbers of cells formed averaged 0.2-1.3 cells per day. Cell size increased throughout the experiment in most of the treatments, including one of the control treatments and those with the greatest potential to limit growth (decreasing temperature, light and soil moisture). Soil moisture was the only environmental parameter that tended to cause late declining growth, and CO, up to 500 (μmol mol⁻¹ did not appear to influence cell development. Despite a substantial range of environmental shifts in the chambers (100 μmol mol⁻¹ CO₂; 125 μEinsteins m⁻² s⁻¹ light; 8 °C temperature; 35% relative humidity; watering every day to every 5th day), the continued stem elongation and cell-size increases indicate that conditions never became significantly limiting to growth in most treatments. Although the range of environmental variability is undoubtedly much greater in most natural red pine systems, these results indicate that fairly large variations in environment during development of juvenile wood in seedlings may not leave an imprint retrievable from cell-size measurements made on the earliest rings of mature trees.en_US
dc.subjectDendrochronologyen_US
dc.subjectTree Ringsen_US
dc.identifier.citationDanzer, S.R., Leavitt, S.W., Panyushkina, I.P., Mergner, A., Garcia, E., Best-Svob, V. 2001. Xylem tracheid development in Pinus resinosa seedlings in controlled environments. Tree-Ring Research 57(1):45-53. en_US
dc.identifier.issn2162-4585-
dc.identifier.issn1536-1098-
dc.identifier.urihttp://hdl.handle.net/10150/262534-
dc.identifier.journalTree-Ring Researchen_US
dc.typeArticleen_US
dc.relation.urlhttp://www.treeringsociety.orgen_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.