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Title: Effects of carbon dioxide enrichment on the expansion and size of kudzu (pueraria lobata) leaves

Abstract

Seedlings of kudzu were grown at 350, 675, or 1000 ..mu..l/L CO/sub 2/ in controlled-environment chambers. At elevated CO/sub 2/ in controlled-environment chambers. At elevated CO/sub 2/ concentrations, maximum leaf expansion rates were approximately 40% greater, leaves were fully expanded several days sooner, fully expanded leaves were larger at each leaf position, and leaf production rates were increased 12%. Peak starch accumulation was much greater in plants grown at elevated CO/sub 2/ concentrations. Total xylem water potentials were higher (less negative) at full hydration, and osmotic potentials were decreased (more negative) by CO/sub 2/ enrichment. At 1000 ..mu..l/L CO/sub 2/, leaf trigger pressure was twice that at 350 ..mu..l/L CO/sub 2/. Results suggest that leaf expansion rates and leaf expansivity may have been increased due to higher trigger pressure at the higher CO/sub 2/ concentrations. The potential for successful seedling establishment may be enhanced as the atmospheric CO/sub 2/ concentration continues to rise, increasing kudzu invasiveness.

Authors:
;
Publication Date:
Research Org.:
Duke Univ., Durham, NC 27706
OSTI Identifier:
6227171
Resource Type:
Journal Article
Journal Name:
Weed Sci.; (United States)
Additional Journal Information:
Journal Volume: 37
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; 54 ENVIRONMENTAL SCIENCES; CARBON DIOXIDE; QUANTITY RATIO; LEAVES; PLANT GROWTH; OPTIMIZATION; PHOTOSYNTHESIS; PRODUCTION; WEEDS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; GROWTH; OXIDES; OXYGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; SYNTHESIS; 553000* - Agriculture & Food Technology; 500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Sasek, T W, and Strain, B R. Effects of carbon dioxide enrichment on the expansion and size of kudzu (pueraria lobata) leaves. United States: N. p., 1989. Web.
Sasek, T W, & Strain, B R. Effects of carbon dioxide enrichment on the expansion and size of kudzu (pueraria lobata) leaves. United States.
Sasek, T W, and Strain, B R. 1989. "Effects of carbon dioxide enrichment on the expansion and size of kudzu (pueraria lobata) leaves". United States.
@article{osti_6227171,
title = {Effects of carbon dioxide enrichment on the expansion and size of kudzu (pueraria lobata) leaves},
author = {Sasek, T W and Strain, B R},
abstractNote = {Seedlings of kudzu were grown at 350, 675, or 1000 ..mu..l/L CO/sub 2/ in controlled-environment chambers. At elevated CO/sub 2/ in controlled-environment chambers. At elevated CO/sub 2/ concentrations, maximum leaf expansion rates were approximately 40% greater, leaves were fully expanded several days sooner, fully expanded leaves were larger at each leaf position, and leaf production rates were increased 12%. Peak starch accumulation was much greater in plants grown at elevated CO/sub 2/ concentrations. Total xylem water potentials were higher (less negative) at full hydration, and osmotic potentials were decreased (more negative) by CO/sub 2/ enrichment. At 1000 ..mu..l/L CO/sub 2/, leaf trigger pressure was twice that at 350 ..mu..l/L CO/sub 2/. Results suggest that leaf expansion rates and leaf expansivity may have been increased due to higher trigger pressure at the higher CO/sub 2/ concentrations. The potential for successful seedling establishment may be enhanced as the atmospheric CO/sub 2/ concentration continues to rise, increasing kudzu invasiveness.},
doi = {},
url = {https://www.osti.gov/biblio/6227171}, journal = {Weed Sci.; (United States)},
number = ,
volume = 37,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}