Oligogalacturonide application increases resistance to Fusarium head blight in durum wheat

• 全文链接

施用低聚半乳糖醛酸酯可提高硬粒小麦对赤霉病的抗性

关键词：

来源：

Oxford Academic

全文链接：

//agri.nais.net.cn/topic/downloadFile/779c1ca6-bd2a-41ce-ba73-3b4879e97d2e

来源地址：

https://academic.oup.com/jxb/advance-article/doi/10.1093/jxb/erae050/7604359?login=true

资源所属：

小麦遗传育种专题

类型：

前沿资讯

语种：

英语

原文发布日期：

2024-02-09

摘要：

Fusariosis causes substantial yield losses in the wheat crop worldwide and compromises food safety because of the presence of toxins associated with the fungal disease. Among the current approaches to crop protection, the use of elicitors able to activate natural defense mechanisms in plants is a strategy gaining increasing attention. Several studies indicate that applications of plant cell-wall-derived elicitors, such as oligogalacturonides (OGs) derived from partial degradation of pectin, induce local and systemic resistance against plant pathogens. The aim of this study was to establish the efficacy of OGs in protecting durum wheat (Triticum turgidum subsp. durum), which is characterized by an extreme susceptibility to Fusarium graminearum. To evaluate the functionality of OGs, spikes and seedlings of cv. Svevo were inoculated with OGs, F. graminearum spores, and a co-treatment of both. Results demonstrated that OGs are active elicitors of wheat defenses, triggering typical immune marker genes and determining regulation of fungal genes. Moreover, bioassays on spikes and transcriptomic analyses on seedlings showed that OGs can regulate relevant physiological processes in Svevo with dose-dependent specificity. Thus, the OG sensing system plays an important role in fine tuning immune signaling pathways in durum wheat.