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<p>Egyptian broomrape (<i>Phelipanche aegyptiaca</i>) is a parasitic weed that infests a wide range of crops. Its effective management remains a significant challenge due to its complex life cycle and strong dependency on host plants. In this study, the potential of fungal isolates as biocontrol agents against <i>P. aegyptiaca</i> seeds was investigated. Seventeen isolates were identified as <i>Fusarium oxysporum</i> through morphological and molecular characterization. The isolates inhibited seed germination with the rates ranging from 62.3% to 96.1%, and the disease severity values ranged from 58.5% to 98.4% in radicle necrosis assays of <i>P. aegyptiaca</i>. None of the isolates were pathogenic on tomato plants. In host-specificity tests, disease severity varied among crops, ranging from 5.56 to 47.7% in tomato, 15.5–82.2% in eggplant, 8.89–75.5% in cucumber, and 8.17–77.7% in melon seeds. FUS27 and FUS29, exhibited less than 20% disease severity on all tested crop seeds. To the best of our knowledge, this is the first report of <i>F. oxysporum</i> on <i>P. aegyptiaca</i> in Türkiye, highlighting its potential for sustainable management of this parasitic weed.</p>

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Effects of Fusarium oxysporum as a biocontrol of the paratisic weed Phelipanche aegyptiaca

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • Esra Cignitas,
  • Gurkan Basbagci,
  • Gorkem Sulu,
  • Yasin Emre Kitis

摘要

Egyptian broomrape (Phelipanche aegyptiaca) is a parasitic weed that infests a wide range of crops. Its effective management remains a significant challenge due to its complex life cycle and strong dependency on host plants. In this study, the potential of fungal isolates as biocontrol agents against P. aegyptiaca seeds was investigated. Seventeen isolates were identified as Fusarium oxysporum through morphological and molecular characterization. The isolates inhibited seed germination with the rates ranging from 62.3% to 96.1%, and the disease severity values ranged from 58.5% to 98.4% in radicle necrosis assays of P. aegyptiaca. None of the isolates were pathogenic on tomato plants. In host-specificity tests, disease severity varied among crops, ranging from 5.56 to 47.7% in tomato, 15.5–82.2% in eggplant, 8.89–75.5% in cucumber, and 8.17–77.7% in melon seeds. FUS27 and FUS29, exhibited less than 20% disease severity on all tested crop seeds. To the best of our knowledge, this is the first report of F. oxysporum on P. aegyptiaca in Türkiye, highlighting its potential for sustainable management of this parasitic weed.