Plant nitrogen budget under elevated carbon dioxide level: Regulation by nitrogen absorption and assimilation. Progress report, October 1, 1995--July 31, 1996

PDF Version Also Available for Download.

Description

The overall objective is to assess root physiological and morphological characteristics that may alter plant N acquisition capacity in response to rising atmospheric CO{sub 2} concentration. There is increasing evidence that plant and ecosystem responses to elevated levels of CO{sub 2} will ultimately depend on availability and acquisition rate of other resources such as N. Therefore, knowledge of any changes in root capacity to acquire N is crucial in predicting plant and ecosystem responses to high CO{sub 2}. Here the authors are testing two major hypotheses: (1) elevated CO{sub 2} will enhance root N uptake kinetics and (2) CO{sub 2} ... continued below

Physical Description

7 p.

Creation Information

BassiriRad, H. & Gutschick, V. September 1, 1998.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

The overall objective is to assess root physiological and morphological characteristics that may alter plant N acquisition capacity in response to rising atmospheric CO{sub 2} concentration. There is increasing evidence that plant and ecosystem responses to elevated levels of CO{sub 2} will ultimately depend on availability and acquisition rate of other resources such as N. Therefore, knowledge of any changes in root capacity to acquire N is crucial in predicting plant and ecosystem responses to high CO{sub 2}. Here the authors are testing two major hypotheses: (1) elevated CO{sub 2} will enhance root N uptake kinetics and (2) CO{sub 2} enrichment will increase root preference for NO{sub 3}{sup {minus}} as opposed to NH{sub 4}{sup +}. High CO{sub 2} enhances root energy status which should in turn favor energy-intensive processes such as NO{sub 3}{sup {minus}} uptake and assimilation. The above hypotheses are being tested on a range of species from native and agricultural ecosystems using a combination of field, lab and growth chamber studies. The authors have demonstrated a considerable interspecies variation in root N uptake responses to CO{sub 2} enrichment and attempts are now underway to evaluate if such variations are correlated with different functional groups. A comprehensive growth model, using physiological and allocation parameters, has been largely completed and will be used to analyze the completed experimental data.

Physical Description

7 p.

Notes

OSTI as DE98007388

Source

  • Other Information: PBD: [1998]

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE98007388
  • Report No.: DOE/ER/62126--T1-Pt.2
  • Grant Number: FG03-95ER62126
  • DOI: 10.2172/656508 | External Link
  • Office of Scientific & Technical Information Report Number: 656508
  • Archival Resource Key: ark:/67531/metadc708764

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • September 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Nov. 6, 2015, 1:11 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 4

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

BassiriRad, H. & Gutschick, V. Plant nitrogen budget under elevated carbon dioxide level: Regulation by nitrogen absorption and assimilation. Progress report, October 1, 1995--July 31, 1996, report, September 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc708764/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.