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Systemic response to Fusarium graminearum and culmorum inoculations: changes in detoxification of flag leaves in wheat

Gallé, Ágnes and Pelsőczi, Alina Beatrix and Benyó, Dániel and Podmaniczki, Anna and Szabó-Hevér, Ágnes and Poór, Péter and Tóth, Beáta and Horváth, Edit and Erdei, László and Csiszár, Jolán (2022) Systemic response to Fusarium graminearum and culmorum inoculations: changes in detoxification of flag leaves in wheat. CEREAL RESEARCH COMMUNICATIONS, 50 (4). pp. 1055-1063. ISSN 0133-3720

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Abstract

Fusarium graminearum and F. culmorum cause the most widespread wheat disease Fusarium head blight (FHB). The present study describes that the Fusarium inoculation of the wheat spikes caused systemic changes in the key elements of the antioxidant/detoxification defence system in the flag leaf during the grain filling period in wheat lines differing in biotic stress susceptibility to explore changes in some components of the response. According to our data, the inoculation with both F. graminearum and F. culmorum at the anthesis changed significantly the activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD) enzymes, as well as the glutathione transferase (GST) activity in the flag leaves of the selected wheat lines approx. two weeks later after the infection. In silico approach supported the expressional up-regulation of various GST genes upon Fusarium infection. Based on our results, GST sequences TaGSTF26 and TaGSTU120 were among the series of important stress response genes, which were transcriptionally up-regulated, thus possibly playing a role in the systemic response to Fusarium infection, where TaGSTF26 might have an important role in the successful defence. These GSTs can serve as effective markers of the detoxification process for breeders and plant protection in the future.

Item Type: Article
Uncontrolled Keywords: Antioxidant enzymes; Fusarium graminearum; Fusarium culmorum; Flag leaf; Glutathione transferase; Wheat
Subjects: Q Science / természettudomány > QK Botany / növénytan
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 13 Feb 2023 13:18
Last Modified: 13 Feb 2023 13:18
URI: http://real.mtak.hu/id/eprint/158849

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