Affordable Access

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

Authors
  • Lee, Kwang Hoe
  • LaRue, Thomas A.
Publication Date
Dec 01, 1992
Source
PubMed Central
Keywords
Language
English
License
Unknown

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.

Report this publication

Statistics

Seen <100 times