A chemical complementation approach reveals genes and interactions of flavonoids with other pathways
| Autor: | Erich Grotewold, Andres Bohorquez-Restrepo, Abraham J.K. Koo, Niloufer G. Irani, Gregg A. Howe, Lucille Pourcel |
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| Rok vydání: | 2013 |
| Předmět: |
Chalcone isomerase
Naringenin Cell signaling Arabidopsis Cyclopentanes Plant Science Genes Plant Anthocyanins chemistry.chemical_compound Gene Expression Regulation Plant Stress Physiological Genetics heterocyclic compounds Oxylipins RNA Messenger Jasmonate Intramolecular Lyases Alleles biology Arabidopsis Proteins Abiotic stress Genetic Complementation Test fungi food and beverages Cell Biology biology.organism_classification Culture Media carbohydrates (lipids) Complementation Biochemistry chemistry Seedlings Flavanones ATP-Binding Cassette Transporters Flux (metabolism) Signal Transduction Transcription Factors |
| Zdroj: | The Plant Journal. 74:383-397 |
| ISSN: | 0960-7412 |
| DOI: | 10.1111/tpj.12129 |
| Popis: | In addition to the classical functions of flavonoids in the response to biotic/abiotic stress conditions, these phenolic compounds have been implicated in the modulation of various developmental processes. These findings suggest that flavonoids are more integral components of the plant signaling machinery than traditionally recognized. To understand how flux through the flavonoid pathway affects plant cellular processes, we used wild-type and chalcone isomerase mutant (transparent testa 5, tt5) seedlings grown under anthocyanin inductive conditions, in the presence or absence of the flavonoid intermediate naringenin, the product of the chalcone isomerase enzyme. Because flavonoid biosynthetic genes are expressed under anthocyanin inductive conditions regardless of whether anthocyanins are formed or not, this system provides an excellent opportunity to specifically investigate the molecular changes associated with increased flux through the flavonoid pathway. By assessing genome-wide mRNA accumulation changes in naringenin-treated and untreated tt5 and wild-type seedlings, we identified a flavonoid-responsive gene set associated with cellular trafficking, stress responses and cellular signaling. Jasmonate biosynthetic genes were highly represented among the signaling pathways induced by increased flux through the flavonoid pathway. In contrast to studies showing a role for flavonoids in the control of auxin transport, no effect on auxin-responsive genes was observed. Taken together, our data suggest that Arabidopsis can sense flavonoids as a signal for multiple fundamental cellular processes. |
| Databáze: | OpenAIRE |
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