Does ozone exposure alter growth and carbon allocation of mycorrhizal plants

Ozone is known to adversely affect plant growth. However, it is less clear how ozone affects belowground processes. This study tests the hypothesis that ozone alters growth and carbon allocation of vesicular arbuscular mycorrhizal (VAM) plants. Two ecotypes of Elymus glaucus (blue wild rye) were exp...

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Bibliographic Details
Published inBulletin of the Ecological Society of America; (United States) Vol. 75:2
Main Authors Yoshida, L.C., Gamon, J.A., Andersen, C.P.
Format Conference Proceeding
LanguageEnglish
Published United States 01.06.1994
Subjects
BIOLOGICAL EFFECTS
CEREALS
ECOLOGICAL CONCENTRATION
GRAMINEAE
GROWTH
LILIOPSIDA
MAGNOLIOPHYTA
MYCORRHIZAS
OZONE
PLANT GROWTH
PLANTS 560300 > Chemicals Metabolism & Toxicology
RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT
RYE
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Summary:Ozone is known to adversely affect plant growth. However, it is less clear how ozone affects belowground processes. This study tests the hypothesis that ozone alters growth and carbon allocation of vesicular arbuscular mycorrhizal (VAM) plants. Two ecotypes of Elymus glaucus (blue wild rye) were exposed to mycorrhizal inoculation and episodic ozone exposures simulating atmospheric conditions in the Los Angeles Basin. Preliminary results show that effects of ozone on growth were subtle. In both ecotypes, growth of aboveground biomass was not affected by ozone while root growth was decreased. In most treatments, mycorrhizal inoculation decreased growth of leaves and stems, but had no significant effect on root growth. Three-way ANOVA tests indicated interactive effects between ecotype, mycorrhiza and ozone. Further experimental work is needed to reveal the biological processes governing these responses.
Bibliography:CONF-940894--
None
ISSN:0012-9623
2327-6096