You need JavaScript to view this

Ethylene and carbon dioxide exchange in leaves and whole plants

Miscellaneous:

Abstract

This investigation addresses the interactions between CO{sub 2}, ethylene, and photosynthetic carbon metabolism in Lycopersicon esculentum Mill. and Xanthium strumarium L. Rates of ethylene release were examined at alternate leaf positions on vegetative tomato plants. The rates of endogenous and ACC-stimulated ethylene release per unit leaf area were highest in the young, rapidly expanding leaves. When plants were grown under CO{sub 2} enrichment rates of ethylene release from the leaf tissue were consistently higher than from tissue grown at ambient levels. Elevated CO{sub 2} concentrations during short-term incubations further enhanced the rates of ethylene release. Ethylene release from ethephon (2-chloroethylphosphonic acid) applied to intact tomato plants provided a model system in which to study the effects of ethylene on photosynthetic metabolism and carbon partitioning. The ethephon treated plants exhibited leaf epinasty, flower bud abscission, inhibition of leaf expansion, adventitious root development, and reduction of dry matter accumulation and growth over time. Rates of steady state photosynthesis, respiration, photorespiration, transpiration, and partitioning of recently fixed {sup 14}C into neutral, acidic, basic, and insoluble leaf fractions were unaltered 24 h after ethephon application.
Authors:
Publication Date:
Jan 01, 1989
Product Type:
Miscellaneous
Reference Number:
EDB-90-104183
Resource Relation:
Other Information: Thesis (Ph. D.)
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 59 BASIC BIOLOGICAL SCIENCES; CARBON DIOXIDE; BIOLOGICAL EFFECTS; ETHYLENE; METABOLISM; HERBS; PHOTOSYNTHESIS; CARBON 14 COMPOUNDS; LEAVES; RESPIRATION; TOMATOES; TRACER TECHNIQUES; TRANSPIRATION; WEEDS; ALKENES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; FOOD; FRUITS; HYDROCARBONS; ISOTOPE APPLICATIONS; LABELLED COMPOUNDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; PLANTS; SYNTHESIS; 560300* - Chemicals Metabolism & Toxicology; 550501 - Metabolism- Tracer Techniques
OSTI ID:
6808239
Research Organizations:
Guelph Univ., ON (Canada)
Country of Origin:
Canada
Language:
English
Availability:
National Library of Canada, Ottawa
Submitting Site:
JMT
Size:
Pages: (vp.)
Announcement Date:

Miscellaneous:

Citation Formats

Woodrow, L. Ethylene and carbon dioxide exchange in leaves and whole plants. Canada: N. p., 1989. Web.
Woodrow, L. Ethylene and carbon dioxide exchange in leaves and whole plants. Canada.
Woodrow, L. 1989. "Ethylene and carbon dioxide exchange in leaves and whole plants." Canada.
@misc{etde_6808239,
title = {Ethylene and carbon dioxide exchange in leaves and whole plants}
author = {Woodrow, L}
abstractNote = {This investigation addresses the interactions between CO{sub 2}, ethylene, and photosynthetic carbon metabolism in Lycopersicon esculentum Mill. and Xanthium strumarium L. Rates of ethylene release were examined at alternate leaf positions on vegetative tomato plants. The rates of endogenous and ACC-stimulated ethylene release per unit leaf area were highest in the young, rapidly expanding leaves. When plants were grown under CO{sub 2} enrichment rates of ethylene release from the leaf tissue were consistently higher than from tissue grown at ambient levels. Elevated CO{sub 2} concentrations during short-term incubations further enhanced the rates of ethylene release. Ethylene release from ethephon (2-chloroethylphosphonic acid) applied to intact tomato plants provided a model system in which to study the effects of ethylene on photosynthetic metabolism and carbon partitioning. The ethephon treated plants exhibited leaf epinasty, flower bud abscission, inhibition of leaf expansion, adventitious root development, and reduction of dry matter accumulation and growth over time. Rates of steady state photosynthesis, respiration, photorespiration, transpiration, and partitioning of recently fixed {sup 14}C into neutral, acidic, basic, and insoluble leaf fractions were unaltered 24 h after ethephon application.}
place = {Canada}
year = {1989}
month = {Jan}
}