Please use this identifier to cite or link to this item: https://open.uns.ac.rs/handle/123456789/32748
Title: Diversity and aggressiveness of the Diaporthe species complex on sunflower in Serbia
Authors: Krsmanović, Slobodan
Riccioni, Luca
Dedić, Boško
Mathew, Febina Merlin
Tolimir, Miodrag
Stojšin, Vera 
Petrović, Kristina 
Keywords: Phomopsis stem canker; seed; soybean
Issue Date: Apr-2024
Publisher: The American Phytopathological Society
Journal: Plant Disease
Abstract: This study aimed to investigate the Diaporthe species associated with Phomopsis stem canker of sunflower (Helianthus annuus L.) in Serbia. The significant increase in sunflower and soybean (Glycine max (L.) Merr.) cultivation may have created the bridge favorable conditions for the distribution of Diaporthe species in this region. The present study identified five Diaporthe species on sunflower: D. gulyae, D. helianthi, D. pseudolongicolla, D. stewartii, and the newly identified D. riccionae based on morphological, molecular, and pathogenic characteristics. The research emphasizes the importance of effective inoculation methods and evaluates the aggressiveness of isolates. Sunflower plants were inoculated using the stem wound method, while seeds of sunflower and soybean were inoculated using the standard seed method. Most of the tested isolates demonstrated high aggressiveness, resulting in over 80% premature wilting of sunflower plants. Additionally, this research examined the aggressiveness of Diaporthe species on sunflower seeds, highlighting D. stewartii and D. pseudolongicolla as common pathogens of both sunflower and soybean. The most aggressive species on seeds was D. stewartii, causing seed decay of up to 100% in sunflower and 97% in soybean. The findings suggest the development of resilient sunflower genotypes through breeding programs and the implementation of strategies to manage cross-contamination risks between sunflower and soybean crops. Furthermore, this study provides insights into the interactions between Diaporthe species and the seeds of sunflower and soybean. Future research will enhance our understanding of the impact of Diaporthe species on sunflower and soybean.
URI: https://open.uns.ac.rs/handle/123456789/32748
ISSN: 0191-2917
DOI: 10.1094/PDIS-01-24-0195-RE
Appears in Collections:IBS Publikacije/Publications

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