Imidazolinone-Induced Loss of Acetohydroxyacid Synthase Activity in Maize Is Not Due to the Enzyme Degradation | Zendy

Dale L. Shaner | Zendy; Bijay Singh | Zendy

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Imidazolinone-Induced Loss of Acetohydroxyacid Synthase Activity in Maize Is Not Due to the Enzyme Degradation

Author(s) -

Dale L. Shaner,

Bijay Singh

Publication year - 1991

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.97.4.1339

Subject(s) - acetolactate synthase , valine , isoleucine , enzyme , leucine , biosynthesis , biochemistry , chemistry , zea mays , enzyme assay , degradation (telecommunications) , amino acid , biology , agronomy , telecommunications , computer science

Acetohydroxyacid synthase (AHAS), the first enzyme leading to the biosynthesis of valine, leucine, and isoleucine, is inhibited by different chemical classes of herbicides. There is a loss in the extractable AHAS activity in imidazolinone-treated plants. Immunological studies using a monoclonal antibody against AHAS revealed no degradation of AHAS protein in imidazolinone-treated maize (Zea mays) plants. Therefore, the loss in AHAS activity is not due to the loss of AHAS protein.

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