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Bacterial volatiles promote growth in Arabidopsis
The demonstration that PGPR strains release different volatile blends and that plant growth is stimulated by differences in these volatile blends establishes an additional function for volatile organic compounds as signaling molecules mediating plant–microbe interactions. Expand
Rhizobacterial volatile emissions regulate auxin homeostasis and cell expansion in Arabidopsis
Transcriptional and histochemical data indicate that VOCs from the PGPR strain GB03 trigger growth promotion in Arabidopsis by regulating auxin homeostasis, providing a new paradigm as to how rhizobacteria promote plant growth. Expand
Metabolic profiling of Medicago truncatula cell cultures reveals the effects of biotic and abiotic elicitors on metabolism.
GC-MS-based metabolite profiling was used to analyse the response of Medicago truncatula cell cultures to elicitation with methyl jasmonate, yeast elicitor (YE), or ultraviolet light (UV), and suggested the induction of threonine aldolase activity, an enzyme as yet uncharacterized from plants. Expand
Genomics-based selection and functional characterization of triterpene glycosyltransferases from the model legume Medicago truncatula.
Two uridine diphosphate glucosyltransferases were functionally characterized and integrated transcript and metabolite profiling supported a function for UGT71G1 in terpenoid but not (iso)flavonoid biosynthesis in the elicit cell cultures. Expand
Jasmonate‐deficient plants have reduced direct and indirect defences against herbivores
It is shown that jasmonic acid is an essential regulatory component for the expression of direct and indirect plant defence, demonstrating the importance of this hormone in the regulation ofDirect and indirect defences in plants. Expand
Bacterial Volatiles Induce Systemic Resistance in Arabidopsis1
New insight is provided into the role of bacteria VOCs as initiators of defense responses in plants and evidence is provided that the signaling pathway activated by volatiles from GB03 is dependent on ethylene, albeit independent of the salicylic acid or jasmonic acid signaling pathways. Expand
GC-MS SPME profiling of rhizobacterial volatiles reveals prospective inducers of growth promotion and induced systemic resistance in plants.
To provide a comprehensive chemical profile of bacterial volatiles emitted from these biologically active strains, headspace solid phase microextraction (SPME) coupled with software extraction of overlapping GC-separated components was employed. Expand
(Z)-3-Hexenol induces defense genes and downstream metabolites in maize
Chemical labeling and bioassay experiments established that exogenous (Z)-3-hexenol can be taken up and converted to a less active acetylated form and indicated that (Z-3- hexenol) can serve as a signaling molecule that triggers defense responses in maize and can rapidly be turned over in planta. Expand
C6-Green leaf volatiles trigger local and systemic VOC emissions in tomato.
Labeling studies showed that de novo synthesis was not required for monoterpene or sesquiterpene release immediately following chemical treatment or insect feeding, and comparative measurements were made between aldehyde doses applied to the plant and levels naturally released from leaves with insect damage. Expand
Metabolomics Reveals Novel Pathways and Differential Mechanistic and Elicitor-Specific Responses in Phenylpropanoid and Isoflavonoid Biosynthesis in Medicago truncatula Cell Cultures1[C][W][OA]
High-performance liquid chromatography coupled to ultraviolet photodiode array detection and ion-trap mass spectrometry was used to analyze the intra- and extracellular secondary product metabolomeExpand