Transcriptome analysis of Arabidopsis roots treated with signaling compounds : a focus on signal transduction, metabolic regulation and secretion

Gene expression in response to signaling molecules has been well studied in the leaves of the model plant species Arabidopsis thaliana. However, knowledge of gene expression and metabolic regulation at the root level is limited. Here, the signaling compounds salicylic acid (SA), methyl jasmonate (Me...

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Veröffentlicht in:The New phytologist. - 1979. - 179(2008), 1 vom: 01., Seite 209-223
1. Verfasser: Badri, Dayakar V (VerfasserIn)
Weitere Verfasser: Loyola-Vargas, Victor M, Du, Jiang, Stermitz, Frank R, Broeckling, Corey D, Iglesias-Andreu, Lourdes, Vivanco, Jorge M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Acetates Arabidopsis Proteins Cyclopentanes Membrane Transport Proteins Oxylipins Plant Exudates Plant Growth Regulators mehr... Nitric Oxide 31C4KY9ESH methyl jasmonate 900N171A0F Salicylic Acid O414PZ4LPZ
Beschreibung
Zusammenfassung:Gene expression in response to signaling molecules has been well studied in the leaves of the model plant species Arabidopsis thaliana. However, knowledge of gene expression and metabolic regulation at the root level is limited. Here, the signaling compounds salicylic acid (SA), methyl jasmonate (MeJA) and nitric oxide (NO) were applied exogenously to induce various defense responses in roots, and their effect was studied using a combination of genomic, molecular and biochemical approaches. Genes involved in defense signaling/activation, cellular redox state, metabolism, transcription factors and membrane transport were altered in expression following treatment with SA, MeJA and NO. In addition, it was found that SA-, MeJA- and NO-elicited roots increased the root exudation of phytochemicals compared with the roots of nontreated control plants. Transport systems likely to be involved in the root exudation of phytochemicals, including the MATE, ABC, MFS, amino acid, sugar and inorganic solute transporters, showed altered expression profiles in response to treatments. Overall, significant differences were found in the signaling compound-elicited expression profiles of genes in roots vs those in leaves. These differences could be correlated to the underground nature of roots and their exposure to higher microbial inoculum rates under natural conditions
Beschreibung:Date Completed 10.09.2008
Date Revised 20.04.2021
published: Print-Electronic
ErratumIn: New Phytol. 2014 Mar;201(4):1508. - PMID 33862963
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/j.1469-8137.2008.02458.x