Research article | Open Access
Helia 2025, Vol. 48(82) 24-39
The Efficacy of Plant Immune Inducer Wolfsonian on Controlling Sunflower White Mold Caused by Sclerotinia sclerotiorum
pp. 24 - 39 | DOI: https://doi.org/10.29329/helia.2025.1334.2
Publish Date: June 30, 2025 | Single/Total View: 0/0 | Single/Total Download: 0/0
Abstract
Sunflower White Mold (SWM), caused by Sclerotinia sclerotiorum, is a major threat to sunflower production. Traditional control methods have limited efficacy, and the pathogen often develops resistance to chemicals, making induced resistance mechanisms a promising alternative. This study investigated the efficacy of Wolfsonian, a plant immune inducer, in controlling SWM through foliar spraying and root irrigation at varying concentrations. Results showed significant reductions in disease incidence and index for both treatments, with root irrigation achieving 35.83% disease incidence and 19.52 disease index, and foliar spraying showing 36.94% incidence and 21.88 index. The average control effects were 65.86% and 61.91%, respectively, with no significant differences among concentrations within treatments. Wolfsonian also promoted sunflower growth, increasing plant height and stem diameter. Field trials confirmed its efficacy, with root irrigation reducing disease incidence to 12.22% and a control effect of 52.49%. Physiological and molecular analyses revealed that Wolfsonian induced total phenol content and H2O2 concentration, peaking at 48 and 72 hours post-inoculation (hpi), respectively. Activities of ROS scavenging enzymes (POD, SOD, PAL) increased, peaking at 72 hpi before declining. Additionally, Wolfsonian significantly induced transcripts of genes related to SA, JA, and ethylene signaling pathways, suggesting their involvement in SWM resistance. These findings highlight Wolfsonian potential as an environmentally friendly and effective SWM management strategy.
Keywords: induction of resistance; plant immune inducer; sunflower White Mold
APA 7th edition
Zhang, W., Wang, X., Li, T., Hao, B., Zhao, Y., Fan, G., Meng, Q., Zhang, J., & Zhao, J. (2025). The Efficacy of Plant Immune Inducer Wolfsonian on Controlling Sunflower White Mold Caused by Sclerotinia sclerotiorum. Helia, 48(82), 24-39. https://doi.org/10.29329/helia.2025.1334.2
Harvard
Zhang, W., Wang, X., Li, T., Hao, B., Zhao, Y., Fan, G., Meng, Q., Zhang, J. and Zhao, J. (2025). The Efficacy of Plant Immune Inducer Wolfsonian on Controlling Sunflower White Mold Caused by Sclerotinia sclerotiorum. Helia, 48(82), pp. 24-39.
Chicago 16th edition
Zhang, Wenbing, Xinbo Wang, Tie Li, Baizhen Hao, Yuping Zhao, Gen Fan, Qinglin Meng, Jian Zhang and Jun Zhao (2025). "The Efficacy of Plant Immune Inducer Wolfsonian on Controlling Sunflower White Mold Caused by Sclerotinia sclerotiorum". Helia 48 (82):24-39. https://doi.org/10.29329/helia.2025.1334.2
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