Enhanced ethylene emissions from red and Norway spruce exposed to acidic mists

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · Plant Physiology; (USA)

DOI:https://doi.org/10.1104/pp.91.1.357· OSTI ID:5925018

Chen, Yimin; Wellburn, A R ^[1]

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1. Univ. of Lancaster (England)

Acidic cloudwater is believed to cause needle injury and to decrease winter hardiness in conifers. During simulations of these adverse conditions, rates of ethylene emissions from and levels of 1-aminocyclopropane-1-carboxylic acid (ACC) in both red and Norway spruce needles increased as a result of treatment with acidic mists but amounts of 1-malonyl(amino)cyclopropane-1-carboxylic acid remained unchanged. However, release of significant quantities of ethylene by another mechanism independent of ACC was also detected from brown needles. Application of exogenous plant growth regulators such as auxin, kinetic, abscisic acid and gibberellic acid (each 0.1 millimolar) had no obvious effects on the rates of basal or stress ethylene production from Norway spruce needles. The kinetics of ethylene formation by acidic mist-stressed needles suggest that there is no active inhibitive mechanism in spruce to prevent stress ethylene being released once ACC has been formed.

• OSTI ID: 5925018
• Journal Information: Plant Physiology; (USA), Vol. 91:1; ISSN 0032-0889
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
54 ENVIRONMENTAL SCIENCES
01 COAL, LIGNITE, AND PEAT
ACID RAIN
BIOLOGICAL EFFECTS
ETHYLENE
BIOSYNTHESIS
LEAVES
PLANT GROWTH REGULATORS
SPRUCES
ALKENES
ATMOSPHERIC PRECIPITATIONS
CONIFERS
HYDROCARBONS
ORGANIC COMPOUNDS
PINOPHYTA
PLANTS
RAIN
SYNTHESIS
TREES
550200* - Biochemistry
540110
010900 - Coal
Lignite
& Peat- Environmental Aspects