N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings

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Article discussing N-acylethanolamine metabolism interacting with abscisic acid signaling in Arabidopsis thaliana seedlings.

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16 p.

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Teaster, Neal D.; Motes, Christy M.; Tang, Yuhong; Wiant, William C.; Cotter, Matthew Q.; Wang, Yuh-Shuh et al. August 2007.

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Article discussing N-acylethanolamine metabolism interacting with abscisic acid signaling in Arabidopsis thaliana seedlings.

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16 p.

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Abstract: N-Acylethanolamines (NAEs) are bioactive acylamides that are present in a wide range of organisms. In plants, NAEs are generally elevated in desiccated seeds, suggesting that they may play a role in seed physiology. NAE and abscisic acid (ABA) levels were depleted during seed germination, and both metabolites inhibited the growth of Arabidopsis thaliana seedlings within a similar developmental window. Combined application of low levels of ABA and NAE produced a more dramatic reduction in germination and growth than either compound alone. Transcript profiling and gene expression studies in NAE-treated seedlings revealed elevated transcripts for a number of ABA-responsive genes and genes typically enriched in desiccated seeds. The levels of ABI3 transcripts were inversely associated with NAE-modulated growth. Overexpression of the Arabidopsis NAE degrading enzyme fatty acid amide hydrolase resulted in seedlings that were hypersensitive to ABA, whereas the ABA-insensitive mutants, abi1-1, abi2-1, and abi3-1, exhibited reduced sensitivity to NAE. Collectively, our data indicate that an intact ABA signaling pathway is required for NAE action and that NAE may intersect the ABA pathway downstream from ABA. We propose that NAE metabolism interacts with ABA in the negative regulation of seedling development and that normal seedling establishment depends on the reduction of the endogenous levels of both metabolites.

Copyright © 2007 American Society of Plant Biologists. The following article appeared in The Plant Cell, http:/​/​dx.​doi.​org/​10.​1105/​tpc.​106.​048702

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  • The Plant Cell, 2007, Rockville: American Society of Plant Biologists, pp. 2454-2469

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  • Publication Title: The Plant Cell
  • Volume: 19
  • Issue: 8
  • Page Start: 2454
  • Page End: 2469
  • Peer Reviewed: Yes

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  • August 2007

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  • March 7, 2014, 7:40 a.m.

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  • Oct. 30, 2023, 10:57 a.m.

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Teaster, Neal D.; Motes, Christy M.; Tang, Yuhong; Wiant, William C.; Cotter, Matthew Q.; Wang, Yuh-Shuh et al. N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings, article, August 2007; [Rockville, Maryland]. (https://digital.library.unt.edu/ark:/67531/metadc277186/: accessed March 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Arts and Sciences.

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