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. 1992 Dec;100(4):1759–1763. doi: 10.1104/pp.100.4.1759

Exogenous Ethylene Inhibits Nodulation of Pisum sativum L. cv Sparkle 1

Kwang Hoe Lee 1,2, Thomas A LaRue 1,2
PMCID: PMC1075861  PMID: 16653194

Abstract

Exogenous ethylene inhibited nodulation on the primary and lateral roots of pea, Pisum sativum L. cv Sparkle. Ethylene was more inhibitory to nodule formation than to root growth; nodule number was reduced by half with only 0.07 μL/L ethylene applied continually to the roots for 3 weeks. The inhibition was overcome by treating roots with 1 μm Ag+, an inhibitor of ethylene action. Exogenous ethylene also inhibited nodulation on sweet clover (Melilotus alba) and on pea mutants that are hypernodulating or have ineffective nodules. Exogenous ethylene did not decrease the number of infections per centimeter of lateral pea root, but nearly all of the infections were blocked when the infection thread was in the basal epidermal cell or in the outer cortical cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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