Bacterial volatiles promote growth in Arabidopsis
- C. Ryu, M. Farag, J. Kloepper
- Biology, MedicineProceedings of the National Academy of Sciences…
- 8 April 2003
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.
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.
Bacterial Volatiles Induce Systemic Resistance in Arabidopsis1
- C. Ryu, M. Farag, Chia-Hui Hu, M. Reddy, J. Kloepper, P. Paré
- Environmental SciencePlant Physiology
- 1 March 2004
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.
Bacterial Volatiles Induce Systemic Resistance in Arabidopsis
Plant growth-promoting rhizobacteria, in association with plant roots, can trigger induced systemic resistance (ISR). Considering that low-molecular weight volatile hormone analogues such as methyl…
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.
Genomics-based selection and functional characterization of triterpene glycosyltransferases from the model legume Medicago truncatula.
- L. Achnine, D. Huhman, M. Farag, L. Sumner, J. Blount, R. Dixon
- Biology, ChemistryThe Plant Journal
- 2 February 2005
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.
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.
(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.
GC-MS SPME profiling of rhizobacterial volatiles reveals prospective inducers of growth promotion and induced systemic resistance in plants.
Induced Resistance by a Long-Chain Bacterial Volatile: Elicitation of Plant Systemic Defense by a C13 Volatile Produced by Paenibacillus polymyxa
These results provide new insight into the existence of a long chain VOC signaling molecule produced by P. polymyxa that can serve as a bacterial trigger of induced systemic resistance in planta.