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Title: Effects of elevated CO/sub 2/ and nutrient stress on nitrogen and phosphorus uptake and use efficiencies

Abstract

Earlier they reported that non-nodulating Lee soybeans growing in complete nutrient solution showed decreased nutrient uptake efficiency (mg N or P/g root) at early pod fill when exposed to elevated CO/sub 2/. In order to look at CO/sub 2//nutrient interactions over time, plants were grown in growth chambers with nutrient solutions containing 10 mM N/1 mM P (controls) or 10 mM N/0.1 mM P (low P) or 0.5 mM N/1 mMP (low N) and exposed to either 350 or 700 ..mu..L/L CO/sub 2/. Uptake efficiencies for N and P of the control plants showed a pronounced positive response to high CO/sub 2/ in early growth stages, which diminished with time and then became negative. This trend was also present for the low N and low P plants. Nutrient use efficiency, however, was increased by day 7 (first harvest) by high CO/sub 2/ and the effect was sustained through the vegetative period. The N and P stresses produced contrasting responses: low P availability caused an increase in P use efficiency, whereas low N caused a decrease in N use efficiency. These effects resulted from P uptake beyond the requirement for growth, a pattern not observed for N uptake.

Authors:
; ;
Publication Date:
Research Org.:
Duke Univ., Durham, NC
OSTI Identifier:
5954677
Report Number(s):
CONF-8707108-
Journal ID: CODEN: PPYSA
Resource Type:
Conference
Journal Name:
Plant Physiol., Suppl.; (United States)
Additional Journal Information:
Journal Volume: 83:4; Conference: Annual meeting of the American Society of Plant Physiologists, St. Louis, MO, USA, 19 Jul 1987
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 59 BASIC BIOLOGICAL SCIENCES; CARBON DIOXIDE; TOXICITY; NITROGEN; NUTRITIONAL DEFICIENCY; PHOSPHORUS; BIOLOGICAL STRESS; EFFICIENCY; GLYCINE HISPIDA; NUTRITION; PLANT GROWTH; ROOT ABSORPTION; ABSORPTION; BACTERIA; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; ELEMENTS; GROWTH; LEGUMINOSAE; MICROORGANISMS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PLANTS; RHIZOBIUM; UPTAKE; 560300* - Chemicals Metabolism & Toxicology; 551000 - Physiological Systems

Citation Formats

Cure, J D, Israel, D W, and Rufty, T W. Effects of elevated CO/sub 2/ and nutrient stress on nitrogen and phosphorus uptake and use efficiencies. United States: N. p., 1987. Web.
Cure, J D, Israel, D W, & Rufty, T W. Effects of elevated CO/sub 2/ and nutrient stress on nitrogen and phosphorus uptake and use efficiencies. United States.
Cure, J D, Israel, D W, and Rufty, T W. 1987. "Effects of elevated CO/sub 2/ and nutrient stress on nitrogen and phosphorus uptake and use efficiencies". United States.
@article{osti_5954677,
title = {Effects of elevated CO/sub 2/ and nutrient stress on nitrogen and phosphorus uptake and use efficiencies},
author = {Cure, J D and Israel, D W and Rufty, T W},
abstractNote = {Earlier they reported that non-nodulating Lee soybeans growing in complete nutrient solution showed decreased nutrient uptake efficiency (mg N or P/g root) at early pod fill when exposed to elevated CO/sub 2/. In order to look at CO/sub 2//nutrient interactions over time, plants were grown in growth chambers with nutrient solutions containing 10 mM N/1 mM P (controls) or 10 mM N/0.1 mM P (low P) or 0.5 mM N/1 mMP (low N) and exposed to either 350 or 700 ..mu..L/L CO/sub 2/. Uptake efficiencies for N and P of the control plants showed a pronounced positive response to high CO/sub 2/ in early growth stages, which diminished with time and then became negative. This trend was also present for the low N and low P plants. Nutrient use efficiency, however, was increased by day 7 (first harvest) by high CO/sub 2/ and the effect was sustained through the vegetative period. The N and P stresses produced contrasting responses: low P availability caused an increase in P use efficiency, whereas low N caused a decrease in N use efficiency. These effects resulted from P uptake beyond the requirement for growth, a pattern not observed for N uptake.},
doi = {},
url = {https://www.osti.gov/biblio/5954677}, journal = {Plant Physiol., Suppl.; (United States)},
number = ,
volume = 83:4,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1987},
month = {Wed Apr 01 00:00:00 EST 1987}
}

Conference:
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