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Cowpea (Vigna unguiculata) Seed Protein Response to Glyphosate

Published online by Cambridge University Press:  12 June 2017

Antonio L. Cerdeira ,
A. Wayne Cole  and
Dawn S. Luthe
Antonio L. Cerdeira
Affiliation:
Dep. of Plant Pathol. and Weed Sci.
A. Wayne Cole
Affiliation:
Dep. of Plant Pathol. and Weed Sci.
Dawn S. Luthe
Affiliation:
Dep. of Biochem., Mississippi State Univ., Mississippi State, MS 39762
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Abstract

Electrophoretic analysis of storage protein accumulation in developing cowpea [Vigna unguiculata (L.) Walp. ‘Mississippi Purple’] seed indicated that a large increase in protein content per seed occurred between 10 and 11 days after flowering (DAF). Polypeptides with molecular weights of 54, 49, and 41 kilodaltons (kD) accumulated first, and one with a molecular weight of 59 kD appeared 2 days later at 13 DAF. Treatment of plants with glyphosate [N-(phosphonomethyl)glycine] when pods were 7 and 10 DAF prevented accumulation of the major storage protein polypeptides. The accumulation of these polypeptides was not inhibited as much when pods were 11, 12, or 13 DAF at the time of treatment with glyphosate. Pod length and seed fresh weight were inhibited by glyphosate treatment of plants bearing pods 7, 10, 11, and 12 DAF. Pod width, seed dry weight, and seed length were inhibited by glyphosate when plants bearing pods 7, 10, and 11 DAF were treated.

Keywords

Electrophoresispolypeptidesseed weight
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 33 , Issue 1 , January 1985 , pp. 1 - 6
Copyright
Copyright © 1985 by the Weed Science Society of America 

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References

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