Role of Ethylene Metabolism in Amaranthus retroflexus.

Content Provider	Semantic Scholar
Author	Raskin, Ilya Beyer, Elmo M.
Copyright Year	1989
Abstract	(14)C-Ethylene was metabolized by etiolated pigweed seedlings (Amaranthus retroflexus L.) in the manner similar to that observed in other plants. The hormone was oxidized to (14)CO(2) and incorporated into (14)C-tissue components. Selected cyclic olefins with differing abilities to block ethylene action were used to determine if ethylene metabolism in pigweed is necessary for ethylene action. 2,5-Norbornadiene and 1,3-cyclohexadiene were effective inhibitors of ethylene action at 800 and 6400 microliters per liter, respectively, in the gas phase, while 1,4-cyclohexadiene and cyclohexene were not. However, all four cyclic olefins inhibited the incorporation and conversion of (14)C-ethylene to (14)CO(2) by 95% with I(50) values below 100 microliters per liter. The results indicate that total ethylene metabolism does not directly correlate with changes in ethylene action. Additionally, the fact that inhibition of ethylene metabolism by the cyclic olefins did not result in a corresponding increase in ethylene evolution indicates that ethylene metabolism does not serve to significantly reduce endogenous ethylene levels.
Starting Page	1
Ending Page	5
Page Count	5
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.plantphysiol.org/content/plantphysiol/90/1/1.full.pdf
PubMed reference number	16666717v1
Volume Number	90
Issue Number	1
Journal	Plant physiology
Language	English
Access Restriction	Open
Subject Keyword	1,3-cyclohexadiene 1,4-cyclohexadiene 2,5-norbornadiene Alkenes Amaranthus retroflexus Cubic Millimeter Cycloparaffins Ethylenes Metabolic Process, Cellular Per Liter Seedlings cyclohexene ethylene metabolic process
Content Type	Text
Resource Type	Article