Applied and Environmental Microbiology, 54(7), 1806–1811. Fumonisins–novel mycotoxins with cancer-promoting activity produced by Fusarium moniliforme. A tandem array of ent-kaurene synthases in maize with roles in gibberellin and more specialized metabolism. Infection of maize by Fusarium species and contamination with fumonisin in Africa. Food Research International, 52(1), 167–177.įandohan, P., Hell, K., Marasas, W. Phytoalexins from the Poaceae: Biosynthesis, function and prospects in food preservation. Systemic virus-induced gene silencing allows functional characterization of maize genes during biotrophic interaction with Ustilago maydis. Van der Linde, K., Kastner, C., Kumlehn, J., Kahmann, R., & Doehlemann, G. Monoterpene and sesquiterpene synthases and the origin of terpene skeletal diversity in plants.
Systems genetics reveals a transcriptional network associated with susceptibility in the maize-grey leaf spot pathosystem. L., Carstens, M., Lin, Y.-C., Meyer, J., Crampton, B. Commercial hybrids and mutant genotypes reveal complex protective roles for inducible terpenoid defenses in maize. M., Hunter, C., Block, A., Willett, D., Alborn, H. Journal of Agricultural and Food Chemistry, 62(9), 2118–2125.Ĭhristensen, S. Maize seedling blight induced by Fusarium verticillioides : Accumulation of Fumonisin B 1 in leaves without colonization of the leaves. verticillioides inoculation in comparison to wildtype line W22, confirming that both kauralexins and zealexins play a role in the resistance response to seedling disease caused by F. The an2 maize mutant, which displays reduced expression of the key kauralexin biosynthetic gene ZmAn2, accumulated decreased root levels of kauralexins and zealexins following F. CML444 control roots also had higher kauralexin levels in comparison to CML144, suggesting that kauralexin accumulation may be primed for rapid up-regulation in CML444 following fungal infection. CML444 (moderately-resistant to FER) and CML144 (susceptible to FER) accumulated both phytoalexin types in seedling roots in response to seed inoculation with F. verticillioides-inoculated sub-tropical maize lines. This research evaluates the induction of kauralexins and zealexins in F. In response to fungal infection, maize produces kauralexins and zealexins, which are antimicrobial terpenoid phytoalexins that directly reduce the growth of many fungal pathogens including F. The pathogen Fusarium verticillioides can infect all maize tissue and causes Fusarium ear rot (FER), a disease that greatly reduces quantity and quality of annual maize yields. Maize is a socially and economically important crop in Africa (and worldwide) that is severely affected by many fungal pathogens.
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