Evidence for allelopathy by tree-of-heaven (Ailanthus altissima)

Rod Martin Heisey

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Ailanthus altissima (Mill.) Swingle contains one or more phytotoxic compounds in roots and leaves. Activity is higher in roots, where it occurs primarily in the bark. Powdered root bark and leaflets strongly inhibited growth of garden cress (Lepidium sativum L.) when mixed with soil in Petri dishes (ID50 values=0.03 g root bark, 0.6 g leaflet/dish). The toxic material was readily extracted by methanol but not dichloromethane. Pieces of root bark mixed with soil at 2, 1, and 0.5 g/pot reduced cress biomass in the greenhouse, whereas methanol-extracted root bark did not. The inhibitory effect of Ailanthus tissues in soil was short-lived (≤4 weeks in pots in greenhouse, ≤3 days in Petri dishes in laboratory). Inhibition by root bark was sometimes superseded by stimulation. Fresh Ailanthus root segments placed in or on soil reduced growth of nearby cress seedlings. Fine roots were more inhibitory than coarse, and inhibition became more pronounced with increased time of soil exposure to roots. Soil collected near Ailanthus roots in the field supported reduced radicle growth of cress compared to control soil. In contrast, stemflow from Ailanthus trees stimulated cress growth. The results suggest allelopathy caused by toxin exudation from roots may contribute to the aggressiveness and persistence of Ailanthus in certain habitats.

Original languageEnglish (US)
Pages (from-to)2039-2055
Number of pages17
JournalJournal of Chemical Ecology
Volume16
Issue number6
DOIs
StatePublished - Jun 1 1990

Fingerprint

Ailanthus
Allelopathy
Ailanthus altissima
allelopathy
Soil
Brassicaceae
Soils
bark
Lepidium sativum
Greenhouses
Growth
soil
Methanol
Toxic materials
Poisons
Methylene Chloride
methanol
Seedlings
Biomass
root radicle

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

Cite this

Heisey, Rod Martin. / Evidence for allelopathy by tree-of-heaven (Ailanthus altissima). In: Journal of Chemical Ecology. 1990 ; Vol. 16, No. 6. pp. 2039-2055.
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Evidence for allelopathy by tree-of-heaven (Ailanthus altissima). / Heisey, Rod Martin.

In: Journal of Chemical Ecology, Vol. 16, No. 6, 01.06.1990, p. 2039-2055.

Research output: Contribution to journalArticle

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