Peanut glutamate dehydrogenase: A target site of herbicide action

Authors

Godson O. Osuji, Prairie View A and M University

Document Type

Conference Proceeding

Publication Title

Soil Science and Plant Nutrition

Abstract

Germination of peanut seeds in 5 mM N-(phosphonomethyl) glycine isopropylamide, 1, 2-dihydro-3, 6-pyridazinedione (maleic hydrazide), glyphosate, and isopropylamine solutions induced stress response reactions and the release of 24-100 μmol NH4+ per 50 g of seed, with consequent differential suppression of the subunits of glutamate dehydrogenase (GDH). Changes in the GDH isomerization suggested an interaction of the herbicides with the enzyme with consequent increases in the Michaelis constants (K(m)) from 7.7 mM in the control to 45.0, 50.0 and 77.0 mM NH4+ in the glyphosate, maleic hydrazide, and glyphosate isopropylamide treatments respectively.

First Page

1159

Last Page

1164

DOI

10.1080/00380768.1997.11863735

Publication Date

1-1-1997

Recommended Citation

Osuji, G. (1997). Peanut glutamate dehydrogenase: A target site of herbicide action. Soil Science and Plant Nutrition, 43 (SPEC. ISS.), 1159-1164. https://doi.org/10.1080/00380768.1997.11863735