Mode of Action of a Herbicide
Open Access
- 1 February 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 71 (2) , 235-240
- https://doi.org/10.1104/pp.71.2.235
Abstract
Johnsongrass (Sorghum halepense (L.) Pers.) is sensitive to methanearsonate, foliar application resulting in a topkill. Investigation of the pattern of photosynthesis by radioautography revealed an accumulation of malate in methanearsonate-treated leaves. Accumulation of malate was attributed to an inhibition of NADP+-malic enzyme which was found to be sensitive to sulfhydryl group reagents including arsenosomethane, CH3AsO. Methanearsonate was found to act as an oxidant in the Hill reaction using spinach chloroplasts, the photoproduct being a sulfhydryl group reagent.This publication has 16 references indexed in Scilit:
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