Work

A Defect in b-Oxidation Causes Abnormal Inflorescence Development in Arabidopsis

Year: 1999

Type: article

Abstract: The abnormal inflorescence meristem1 (aim1) mutation affects inflorescence and floral development in Arabidopsis. After the transition to reproductive growth, the aim1 inflorescence meristem becomes disorganized, producing abnormal floral meristems and resulting in plants with severely reduced fertility. The derived amino acid sequence of AIM1 shows extensive similarity to the cucumber multifunctional protein involved in beta-oxidation of fatty acids, which possesses l-3-hydroxyacyl-CoA hydrolyase, l-3-hydroxyacyl-dehydrogenase, d-3-hydroxyacyl-CoA epimerase, and Delta(3), Delta(2)-enoyl-CoA isomerase activities. A defect in beta-oxidation has been confirmed by demonstrating the resistance of the aim1 mutant to 2,4-diphenoxybutyric acid, which is converted to the herbicide 2,4-D by the beta-oxidation pathway. In addition, the loss of AIM1 alters the fatty acid composition of the mature adult plant.

Source: The Plant Cell

DOI: 10.2307/3871086

Authors: Todd A. Richmond, Anthony B. Bleecker

Institution: University of Wisconsin–Madison

Language: English

Topic: Plant Molecular Biology Research

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: green

Funders: National Institute on Aging, National Institute of General Medical Sciences