Skip to main content
ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Publications at this Location » Publication #401742
Research Project: Enhancing Control of Stripe Rusts of Cereal Crops

Location: Wheat Health, Genetics, and Quality Research

Title: Effects of flubeneteram on inhibiting the development of Puccinia striiformis f. sp. tritici in wheat leaves

Author
item JI, FAN - Northwest A&f University
item ZHANG, JUNTIAN - Northwest A&f University
item Chen, Xianming
item LIU, BOFAN - Northwest A&f University
item ZHOU, AIHONG - Northwest A&f University
item FENG, YAOXUAN - Northwest A&f University
item ZHOA, JUN - Northwest A&f University
item HUANG, LILI - Northwest A&f University
item KANG, ZHENSHENG - Northwest A&f University
item ZHAN, GANGMING - Northwest A&f University

Submitted to: Journal of Agricultural and Food Chemistry
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/10/2023
Publication Date: 3/22/2023
Citation: Ji, F., Zhang, J., Chen, X., Liu, B., Zhou, A., Feng, Y., Zhoa, J., Huang, L., Kang, Z., Zhan, G. 2023. Effects of flubeneteram on inhibiting the development of Puccinia striiformis f. sp. tritici in wheat leaves. Journal of Agricultural and Food Chemistry. 71(13):5162-5171. https://doi.org/10.1021/acs.jafc.3c00499.
DOI: https://doi.org/10.1021/acs.jafc.3c00499

Interpretive Summary: Stripe rust is a serious threat to wheat production, and the application of fungicides is one of the most important means for controlling the disease. The purpose of this study is to determine effects of a new succinate dehydrogenase inhibitor (SDHI) fungicide, flubeneteram, on reducing stripe rust. The sensitivities of 173 isolates of the stripe rust pathogen to flubeneteram varied significantly. Flubeneteram displayed significant effects on inhibiting the SDH enzymes of the pathogen. Histological observations showed that after flubeneteram application, the formation and development of stripe rust pathogen hyphae and haustoria were significantly inhibited, and the structures were destroyed. Flubeneteram primed wheat for salicylic acid-induced defenses via upregulating pathogenesis-related genes (PR1 and PR2). Altogether, our study is the first to provide evidence that flubeneteram induces wheat defense against stripe rust pathogen infection. The findings indicate that flubeneteram could be an effective fungicide for managing stripe rust.

Technical Abstract: Stripe rust caused by Puccinia striiformis f. sp. tritici (Pst) is a serious threat to wheat production, and the application of fungicides is one of the most important means for controlling the disease. The purpose of this study is to determine effects of a new succinate dehydrogenase inhibitor (SDHI) fungicide, flubeneteram, on reducing stripe rust. The sensitivities of 173 Pst isolates to flubeneteram varied significantly. Flubeneteram displayed significant effects on inhibiting the SDH enzymes of Pst. Histological observations showed that after flubeneteram application, the formation and development of Pst hyphae and haustoria were significantly inhibited, and the structures were destroyed. Flubeneteram primed wheat for salicylic acid-induced defenses via upregulating pathogenesis-related genes (PR1 and PR2). Altogether, our study is the first to provide evidence that flubeneteram induces wheat defense against Pst infection. The findings indicate that flubeneteram could be an effective fungicide for managing stripe rust.