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Fusarium Yellows of Ginger (Zingiber officinale Roscoe) Caused by Fusarium oxysporum f. sp. zingiberi Is Associated with Cultivar-Specific Expression of Defense-Responsive Genes

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Prasath, D., Matthews, A., O’Neill, W. T., Aitken, E. A. B. and Chen, A. (2023) Fusarium Yellows of Ginger (Zingiber officinale Roscoe) Caused by Fusarium oxysporum f. sp. zingiberi Is Associated with Cultivar-Specific Expression of Defense-Responsive Genes. Pathogens, 12 (1). p. 141. ISSN 2076-0817

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Article Link: https://doi.org/10.3390/pathogens12010141

Publisher URL: https://www.mdpi.com/2076-0817/12/1/141

Abstract

Ginger (Zingiber officinale Roscoe) is an important horticultural crop, valued for its culinary and medicinal properties. Fusarium yellows of ginger, caused by Fusarium oxysporum f. sp. zingiberi (Foz), is a devastating disease that has significantly reduced the quality and crop yield of ginger worldwide. The compatible interaction between ginger and Foz leading to susceptibility is dissected here. The pathogenicity of two Foz isolates on ginger was confirmed by their ability to colonise ginger and in turn induce both internal and external plant symptoms typical of Fusarium yellows. To shed light on Foz susceptibility at the molecular level, a set of defense-responsive genes was analysed for expression in the roots of ginger cultivars challenged with Foz. These include nucleotide-binding site (NBS) type of resistant (R) genes with a functional role in pathogen recognition, transcription factors associated with systemic acquired resistance, and enzymes involved in terpenoid biosynthesis and cell wall modifications. Among three R genes, the transcripts of ZoNBS1 and ZoNBS3 were rapidly induced by Foz at the onset of infection, and the expression magnitude was cultivar-dependent. These expression characteristics extend to the other genes. This study is the first step in understanding the mechanisms of compatible host–pathogen interactions in ginger.

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:Fusarium oxysporum; ginger; Fusarium yellows; plant immunity; gene expression; resistance genes; defense response; host–pathogen interaction
Subjects:Plant culture
Plant culture > Food crops
Plant pests and diseases
Plant pests and diseases > Plant pathology
Live Archive:17 Feb 2023 05:38
Last Modified:17 Feb 2023 05:38

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