Authors:Carloalberto Petti, Khan Mojibur, and Fiona Doohan
strain MKB 158, can inhibit the development of Fusarium seedling blight disease on wheat and barley. Application of this and other pseudomonads as head sprays inhibits the development of Fusarium head blight disease (FHB) disease on wheat and barley under both field and glasshouse conditions.
strains MKB 158 and MKB 249 also reduced DON contamination of grain under field conditions. Evidence suggests that
does not directly inhibit the growth of
, but that it potentiates host resistance against this disease. Transcriptome profiling identified barley genes differentially expressed as early events in (a) bacterium-induced resistance to seedling blight and (b) heads following
co-inoculation. Bacterium-potentiated resistance to
affects the transcription of many genes that are involved in diverse processes, including cell rescue and defence, metabolism, cell cycle and DNA replication and signalling.
Authors:Fiona Doohan, Chan Arunachalam, Shumei Jiang, Mojibur Khan, Damian Egan, Guillaume Erard, and Stephanie Walter
mycotoxin deoxynivalenol (DON) is a potent inhibitor of eukaryotic protein synthesis and acts as a virulence factor during infection of wheat heads. Some wheat genotypes can tolerate DON and resist its deleterious effects; others cannot. Transcriptome studies identified several genes up-regulated in spikelets of the DON-resistant wheat cultivar CM82036 in response to DON treatment. We will discuss how the finding presented herein and other recent findings contribute to the hypothesis that management of hormone homeostasis and alleviation of oxidative stress in DON-challenged wheat might facilitate cell survival and thereby retard fungal colonisation.